SIMATIC
Bus link
Extended fieldbus diagnostics in
PROFIBUS PA
Operating Instructions
05/2015
A5E32591680-AA
Preface 1
Product overview 2
Description of the
components 3
Deployment planning 4
Commissioning: EFD system 5
Service and maintenance 6
Alarm, fault and system
messages 7
Technical specifications 8
Appendix A
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will be
used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property
damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified
personnel are those who, based on their training and experience, are capable of identifying risks and avoiding
potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended or
approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
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may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software described.
Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in
this publication is reviewed regularly and any necessary corrections are included in subsequent editions.
Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E32591680-AA
Ⓟ 11/2015 Subject to change
Copyright © Siemens AG 2015.
All rights reserved
Table of contents
1 Preface.........................................................................................................................................................5
1.1 Security information.................................................................................................................5
1.2 Preface.....................................................................................................................................5
2Product overview..........................................................................................................................................9
2.1 Overview..................................................................................................................................9
2.2 EFD system (bus link with extended fieldbus diagnostics)....................................................10
2.2.1 What is extended fieldbus diagnostics?.................................................................................10
2.2.2 EFD system............................................................................................................................10
3 Description of the components...................................................................................................................13
4 Deployment planning..................................................................................................................................15
4.1 Dimensioning of the systems.................................................................................................15
4.2 Design versions......................................................................................................................16
4.2.1 Configuration variants of the bus link.....................................................................................16
4.2.2 Quantity structure for the configuration of an EFD system....................................................16
5 Commissioning: EFD system.....................................................................................................................17
5.1 Overview for commissioning..................................................................................................17
5.2 Resetting the interface module..............................................................................................17
5.3 Setting the PROFIBUS address and redundancy mode of the coupler.................................18
5.4 Enabling/disabling extended fieldbus diagnostics at the field distributor...............................20
5.5 Configuring the bus link with STEP 7.....................................................................................21
5.6 Configuring the extended fieldbus diagnostics using SIMATIC PDM....................................22
5.6.1 Overview and requirements...................................................................................................22
5.6.2 Using the Commissioning Wizard for extended fieldbus diagnostics.....................................23
5.6.3 Manually configuring the extended fieldbus diagnostics........................................................23
6 Service and maintenance...........................................................................................................................29
6.1 Requirements.........................................................................................................................29
6.2 Replacing components during ongoing operation..................................................................29
6.3 Replacing components with restart........................................................................................30
6.4 Replacing an interface module...............................................................................................31
6.5 Replacing a coupler...............................................................................................................31
6.6 Replacing a field distributor....................................................................................................32
6.7 Adding/removing/replacing field devices during operation.....................................................34
6.7.1 Adding/removing/replacing a field device during operation using the wizard.........................34
6.7.2 Manually adding/removing/replacing a field device during operation.....................................35
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 3
6.8 Modifying an EFD system......................................................................................................37
6.9 Firmware update of the field distributor..................................................................................38
6.10 Disabling extended fieldbus diagnostics................................................................................41
7 Alarm, fault and system messages.............................................................................................................43
7.1 Diagnostics using LED displays.............................................................................................43
7.1.1 LED displays of the interface module.....................................................................................43
7.1.2 LED displays of the coupler...................................................................................................43
7.1.3 LED displays of the field distributor........................................................................................43
7.2 Diagnostics of the interface module.......................................................................................43
7.3 Diagnostics of the coupler......................................................................................................44
7.4 Elimination of errors with the extended fieldbus diagnostics..................................................44
7.4.1 Overview................................................................................................................................44
7.4.2 Topology................................................................................................................................48
7.4.2.1 Topology: Eliminating the "Failure" diagnostics status...........................................................48
7.4.2.2 Topology: Correcting the diagnostics status "Outside the specification"...............................50
7.4.2.3 Topology: Changing the diagnostics status "Maintenance required".....................................51
7.4.3 Coupler...................................................................................................................................52
7.4.3.1 Coupler: Eliminating the "Failure" diagnostics status.............................................................52
7.4.3.2 Coupler: Correcting the diagnostics status "Outside the specification"..................................53
7.4.3.3 Coupler: Changing the diagnostics status "Maintenance required".......................................54
7.4.4 Field distributor.......................................................................................................................56
7.4.4.1 Field distributor: Eliminating the "Failure" diagnostics status.................................................56
7.4.4.2 Field distributor: Correcting the diagnostics status "Out of specification"..............................57
7.4.4.3 Field distributor: Changing the diagnostics status "Maintenance required"...........................62
8 Technical specifications..............................................................................................................................67
A Appendix.....................................................................................................................................................69
A.1 Article numbers......................................................................................................................69
A.2 Service & Support..................................................................................................................71
Glossary.....................................................................................................................................................75
Index...........................................................................................................................................................81
Table of contents
Extended fieldbus diagnostics in PROFIBUS PA
4Operating Instructions, 05/2015, A5E32591680-AA
Preface 1
1.1 Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, solutions, machines, equipment and/or networks. They are
important components in a holistic industrial security concept. With this in mind, Siemens’
products and solutions undergo continuous development. Siemens recommends strongly that
you regularly check for product updates.
For the secure operation of Siemens products and solutions, it is necessary to take suitable
preventive action (e.g. cell protection concept) and integrate each component into a holistic,
state-of-the-art industrial security concept. Third-party products that may be in use should also
be considered. You can find more information about industrial security under: http://
www.siemens.com/industrialsecurity
To stay informed about product updates as they occur, sign up for a product-specific
newsletter. You can find additional information on this at: http://
support.automation.siemens.com.
1.2 Preface
Purpose of the operating instructions
Supplement to the existing operating instructions
These operating instructions supplement the following documentation:
● DP/PA Coupler, Active Field Distributor, DP/PA Link, and Y Link Operating Instructions
(http://support.industry.siemens.com/cs/document/1142696)
● Product Information for DP/PA Coupler, DP/PA Link and Y Link Operating Instructions
(http://support.industry.siemens.com/cs/document/105657140)
There you can find information on configuring, mounting, wiring, and commissioning the
components. The following sections of the documentation for bus links in particular also apply
to the bus links with extended fieldbus diagnostics:
● Install
● Connecting
● Operation of the bus link
● Functions
For this reason, these sections are not included in these operating instructions.
● Interface module
● Coupler
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 5
● Active field splitter "AFS" and Active field distributor "AFDiSD"
● Bus link "DP/PA Link.
Additional information
These operating instructions provide you with the additional information for commissioning a
PROFIBUS PA fieldbus segment with extended fieldbus diagnostics.
Range of validity of these operating instructions
These operating instructions apply for the following products:
Product Product name Article number From ver‐
sion
Interface module IM 153‑2 (Interface Module) 6ES7153-2BA70-0XB
0
V6.1
Coupler FDC 157 (Field Device Coupler) 6ES7157-0AC85-0XA
0
Field distributor AFDiSD (Active Field Distributor intrinsic
Safety with extended fieldbus Diagnosis
function)
6ES7655-5DX60-1BB
0
These operating instructions contain a description of the components that was valid at the time
the operating instructions were published. We reserve the right to include product information
with information updates with new components and components with a new product status.
Basic knowledge required
To understand these operating instructions you should have general experience in the field of
automation engineering. Basic knowledge in the following areas is also required:
● Automation system S7-400
● Distributed I/O systems on PROFIBUS DP
● PROFIBUS PA
● STEP 7/SIMATIC PCS 7 basic software, especially:
– Working with the SIMATIC Manager
– Hardware configuration with HW Config
– Process control system SIMATIC PCS 7
– Process Device Manager SIMATIC PDM
When using the AFDiSD, you should be familiar with the basics of explosion protection, the
identification of explosion-protected equipment and the regulations regarding explosion
protection.
Preface
1.2 Preface
Extended fieldbus diagnostics in PROFIBUS PA
6Operating Instructions, 05/2015, A5E32591680-AA
Configuring with STEP 7
You can configure the extended fieldbus diagnostics with:
● STEP 7 as of V5.5 SP4 and HSP246 as of V3.0 (for IM 153-2), HSP253 (for Field Device
Coupler)
or with
● SIMATIC PCS 7 as of V8.1
● SIMATIC PDM as of V8.2
Integrate the required device descriptions in SIMATIC PDM.
Position in the overall information structure
Depending on the hardware used you require the following manuals in addition to these
operating instructions:
● The manual for the implemented DP master, including the following special information:
– Configuring and commissioning of a DP master system
– Description of the DP master
● The manual SIMATIC NET, PROFIBUS network manual (http://
support.industry.siemens.com/cs/document/35222591)
● The installation manual Automation System S7-400: Installation (http://
support.industry.siemens.com/cs/document/1117849)
● The operating instructionsSIMATIC S7-300 CPU 31xC and CPU 31x: Installation (http://
support.industry.siemens.com/cs/document/13008499)
● The manual Automation Systems S7-300, ET 200M Ex I/O modules (http://
support.industry.siemens.com/cs/document/1096709), including in particular information
on the topics intrinsic safety and explosion protection.
● System manual Fundamentals of Explosion Protection (http://
support.industry.siemens.com/cs/document/12521844)
More information on explosion protection can be found in the corresponding directives and
standards.
Sign posts
These operating instructions are subdivided into the following subjects:
● Product overview and description of the components
● Application planning and commissioning
● Maintenance and diagnostics
● Technical specifications
● Appendices
● Glossary
● Index
Preface
1.2 Preface
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 7
EFD system
A system is designated an EFD system when the following requirements are met by all
components involved in communication with the field devices:
● All components (interface module (IM 153-2), couplers (FDC 157), field distributors
(AFDiSD)) support extended fieldbus diagnostics.
● The use of extended fieldbus diagnostics is configured for components.
Conventions
The following terms are used as synonyms in this document:
Term in the manual Synonyms Notes
EFD system Bus link with extended
fieldbus diagnostics
Interface module IM 153-2 (Outdoor) Interface module used for the EFD system
Coupler FDC 157; Field device
coupler
Field distributor AFDiSD but not AFS (Active Field Splitter), this is referred to by its full name: Active
field splitter (AFS)
Bus link DP/PA Link In the EFD system, the DP/PA link is used as the bus link. Components
of the DP/PA link are an interface module and a coupler.
Please observe notes labeled as follows:
Note
A note contains important information about the product described, about handling the product
or about a specific section of the documentation that requires particular attention.
Recycling and disposal
The described components are ecologically compatible, and thus suitable for recycling. For
environmentally sound recycling and disposal of your old devices please contact a certified
disposal service company for electronic scrap.
Additional support
● The technical documentation for the various SIMATIC products and systems is available
on the Internet (http://www.siemens.com/simatic-tech-doku-portal).
● You can find the online catalog and online ordering system on the Internet (https://
mall.industry.siemens.com).
Preface
1.2 Preface
Extended fieldbus diagnostics in PROFIBUS PA
8Operating Instructions, 05/2015, A5E32591680-AA
Product overview 2
2.1 Overview
Components required for "extended fieldbus diagnostics"
The following components provide the option for extended fieldbus diagnostics (EFD):
● Interface module
● Coupler
● Field distributor
Note
Article numbers
The article numbers for ordering the components can be found in Preface (Page 5).
Parameter assignment for the EFD-enabled devices
SIMATIC PDM is used to assign parameters to the EFD-enabled devices from a PG/PC, see
section Commissioning: EFD system (Page 17).
Reference
Additional information on SIMATIC PCS 7 and PDM can be found in the following
documentation on the Internet: (www.siemens.com/pcs7-documentation)
● Configuration manual
SIMATIC; Process Control System PCS 7; Operator Station
● Operating manual
SIMATIC; PCS 7 Process Control System, Help for SIMATIC PDM
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 9
2.2 EFD system (bus link with extended fieldbus diagnostics)
2.2.1 What is extended fieldbus diagnostics?
Extended fieldbus diagnostics
The extended fieldbus diagnostics allows the configuration and comprehensive diagnostics of
the complete bus segment:
● Interface module
● Coupler
● Field distributor
● Connecting cables between the components (AS; bus link and field devices)
If the bus link is configured exclusively with EFD-capable components, you can take advantage
of the benefits of the extended field bus diagnostics:
● Rugged infrastructure components - higher ruggedness of the complete system
● Diagnostics information for reliable commissioning of the fieldbus installation
● Diagnostics messages in PCS 7
● Alarm handling in SIMATIC PDM
● Consistent information flow of the system status diagnostics
● Preventive maintenance measures during operation to prevent system downtimes
2.2.2 EFD system
How do extended fieldbus diagnostics work?
The interface module (IM 153-2) maps the status information of the entire connected bus
segment. The installed couplers (FDC 157) and active field splitters/distributors (AFS and
AFDxxx) determine the status of the connected lines and the physical data of the bus segment
and communicates this to the interface module. The information obtained is then displayed
using the PCS 7 maintenance station and can be evaluated using SIMATIC PDM.
Example representation of a bus link with IM 153-2 and FDC 157
Product overview
2.2 EFD system (bus link with extended fieldbus diagnostics)
Extended fieldbus diagnostics in PROFIBUS PA
10 Operating Instructions, 05/2015, A5E32591680-AA
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Figure 2-1 Extended fieldbus diagnostics with AFDiSD
Characteristics of extended fieldbus diagnostics
After startup (POWER ON), the bus link detects and initializes all involved fieldbus
components. Requirement: Interface module, couplers and field devices must be configured
in STEP 7. Each field distributor is initialized with a reserved identifier that cannot conflict with
the address mechanism of the respective fieldbus system. The interface module can determine
the data of the connected fieldbus segment independent of the topology (line, ring, star
topology) and make this available to the user via SIMATIC PDM.
The extended fieldbus diagnostics provides status displays for:
● Bus link (interface module and coupler)
● Field bus
● Each connected field distributor (AFDiSD including the physical layer of the connected spur
lines)
Product overview
2.2 EFD system (bus link with extended fieldbus diagnostics)
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 11
Licensing for extended fieldbus diagnostics
For the extended fieldbus diagnostics with SIMATIC PDM, you need the following licensing
for each bus link:
SIMATIC PDM TAG: 50 TAGs per segment (applies also to redundant configuration)
PDM license concept
The following table shows the number of SIMATIC PDM TAGs contained in the product:
Product package Version SIMATIC PDM TAGs contained
SIMATIC PDM PCS 7 V8.2 100
SIMATIC PDM PCS 7-FF V8.2 100
SIMATIC PDM S7 V8.2 100
SIMATIC PDM Service V8.2 100
SIMATIC PDM Basic V8.2 4
You can increase the number of TAGs at any time with accumulative sets of 10, 100, or 1000
TAGs.
One TAG corresponds to one SIMATIC PDM object, which represents individual field devices
or components within a project, e.g. measuring instruments, positioners, switching devices or
remote I/Os. TAGs are also relevant for diagnostics with the lifelist of SIMATIC PDM.
You can find more information about PDM product packages and ordering information on the
Internet (http://support.industry.siemens.com/cs/document/73247204?lc=en-US).
Automation License Manager (ALM)
You can find information on handling the required license keys and management program
Automation License Manager (ALM) on the Internet (http://support.industry.siemens.com/cs/
document/114358?lc=en-US).
Product overview
2.2 EFD system (bus link with extended fieldbus diagnostics)
Extended fieldbus diagnostics in PROFIBUS PA
12 Operating Instructions, 05/2015, A5E32591680-AA
Description of the components 3
Interface module (IM 153‑2 (Outdoor))
The released interface module is the communication connection of the bus link. The interface
module collects all data of the lower-level components (couplers, field distributors, and
connected bus segment).
For the extended fieldbus diagnostics, the interface module provides an interface to the
diagnostics in SIMATIC PDM or PCS 7.
Coupler (FDC 157)
The released coupler is the physical connection to the lower-level bus segment.
For the extended fieldbus diagnostics, the coupler must be configured in STEP 7.
Field distributor (AFDiSD)
The field distributor is used for connection of the field devices to the bus segment.
For the extended bus diagnostics, you enable the diagnostic capability of the field distributor
using a mode selector (see section Enabling/disabling extended fieldbus diagnostics at the
field distributor (Page 20)).
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 13
Description of the components
Extended fieldbus diagnostics in PROFIBUS PA
14 Operating Instructions, 05/2015, A5E32591680-AA
Deployment planning 4
4.1 Dimensioning of the systems
SIMATIC Fieldbus Calculator
We recommend using the "SIMATIC Fieldbus Calculator" for dimensioning of plants with active
field distributors (AFDxxx or AFS).
You can find detailed information and download the "SIMATIC Fieldbus Calculator" from the
Internet (http://support.industry.siemens.com/cs/document/53842953).
Requirement
Use for the bus link to the PROFIBUS PA
Calculation of bus segments before commissioning
1. Determine the components of the bus segment required for your automation task and their
layout.
2. Use the "SIMATIC Fieldbus Calculator" to check the physical requirements for the bus
segment on the basis of the relevant physical data of the components (line lengths, basic
current of the devices, topology, etc.).
Based on the entered data and the configuration, the "SIMATIC Fieldbus Calculator"
evaluates compliance with the physical and electrical characteristics.
3. If the "SIMATIC Fieldbus Calculator" detects that a limit has been exceeded, you must
correct the configuration of the bus segment, for example by changing the line lengths,
moving field devices into other bus segments, or distributing the field devices among several
bus links.
4. If the "SIMATIC Fieldbus Calculator" confirms that the corrected configuration complies
with the physical and electrical quantities, configure the field devices used in your
configuration in STEP 7 HW Config.
5. Mount the bus segments in accordance with the verified configuration and connect them.
6. Commission the bus link with extended fieldbus diagnostics (see section Commissioning:
EFD system (Page 17)).
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 15
4.2 Design versions
4.2.1 Configuration variants of the bus link
The information in the DP/PA Coupler, Active Field Distributors, DP/PA Link and Y Link
Operating Instructions applies to configuration variants of the bus link for PROFIBUS PA.
4.2.2 Quantity structure for the configuration of an EFD system
Minimum configuration
The following rules apply to the minimum configuration of an EFD system:
Function Component Number Note
Interface module IM 153-2 (Outdoor) 1 Interface module
Coupler FDC 157 1 Coupler
Field distributor AFDiSD 1 Field distributor
Field device PA field devices 1 PA field device per
spur line
Max. 6 spur lines on the field dis‐
tributor
Maximum configuration
The following rules apply to the maximum configuration of an EFD system:
Function Component Maximum number Note
Interface module IM 153-2 (Outdoor) 2 Redundant interface module pair
Coupler FDC 157 2 Redundancy; coupler or ring re‐
dundancy
AFS AFS 1 Active field splitter (AFS) for cou‐
pler redundancy:
Field distributor AFDiSD 5 Field distributor
Field device PA field devices 1 PA field device per
spur line
Max. 30 PA field device per bus
segment for 6 spur lines per field
distributor
Deployment planning
4.2 Design versions
Extended fieldbus diagnostics in PROFIBUS PA
16 Operating Instructions, 05/2015, A5E32591680-AA
Commissioning: EFD system 5
5.1 Overview for commissioning
Content
In this section, you will learn which steps you need to perform to commission the EFD
system.
Step Procedure See ...
1. Install and connect the components:
● Bus link
(EFD-capable interface module + EFD-capable coupler)
● Field distributor
● PROFIBUS PA field devices
Mounting section and Connecting section in the
operating instructions
DP/PA coupler, Active Field Distributor, DP/PA
Link, and Y Link (http://
support.industry.siemens.com/cs/document/
1142696)
2. Set DIP switch
● Interface module:
– Address
– Redundancy
● Field distributor:
– Enable EFD - position "D"
Sec. Resetting the interface module (Page 17),
Setting the PROFIBUS address and redundan‐
cy mode of the coupler (Page 18), Enabling/dis‐
abling extended fieldbus diagnostics at the field
distributor (Page 20)
3. Configure and assign parameters for the bus link with field devi‐
ces in STEP 7
Sec. Configuring the bus link with STEP 7
(Page 21)
4. Switch on the bus link
Download the configuration to the PLC
Sec. Using the Commissioning Wizard for ex‐
tended fieldbus diagnostics (Page 23)
5. Configure in SIMATIC PDM:
● Extended fieldbus diagnostics
● PROFIBUS PA master system
● PROFIBUS PA field devices
6. Evaluate diagnostics messages Sec. Elimination of errors with the extended
fieldbus diagnostics (Page 44)
5.2 Resetting the interface module
The EFD configuration remains stored in the interface module after the supply voltage is
switched off.
If you would like to reuse a previously used interface module with a different PROFIBUS
address, you must reset the interface module.
Recommendation: Reset the PROFIBUS address of the interface module before removing it.
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 17
Procedure
1. Switch off the power supply.
2. Set the PROFIBUS address of the interface module with the DIP switches to "0" (all switches
to the left).
3. Switch on the supply voltage.
The interface module is reset.
Note
Effects:
● The following data is reset to the default settings:
– Internal parameter "Fieldbus diagnostics enabled"
– EFD configuration is deleted
● I&M data (Identification & Maintenance) remain stored.
4. Check the LED displays:
A reset is complete when the LEDs have the following status:
– BF1 LED: Flashes
– All other LEDs have the status: Off
5. Switch off the power supply.
6. Set a valid PROFIBUS address for the interface module.
5.3 Setting the PROFIBUS address and redundancy mode of the coupler
Introduction
Setting the bus address of the coupler is not necessary to operate the bus link.
In the delivery state, the bus address is set to "0" and the redundancy mode is set to "coupler
redundancy".
Rules
● The only bus address allowed for (both) couplers is "0".
● The redundancy mode that is set on the coupler pair ("RING" switch) and in the
configuration (ring or coupler redundancy) must match.
●PROFIBUS address 124 is reserved for internal purposes when the EFD system is used.
Configuring or setting of the PROFIBUS address 124 is not permitted for any components
on the bus segment when the EFD system is used..
● With ring redundancy, the FDC 157 on the left ("Coupler 1") must have a lower PA address
than the FDC 157 on the right ("Coupler 2")!
Commissioning: EFD system
5.3 Setting the PROFIBUS address and redundancy mode of the coupler
Extended fieldbus diagnostics in PROFIBUS PA
18 Operating Instructions, 05/2015, A5E32591680-AA
Tools required
● 3 mm screwdriver
Commissioning with extended fieldbus diagnostics
1. Open the front panel of the coupler.
2. Set the bus address "0" using the DIP switches, if necessary (= default setting).
3. Set the redundancy mode via the bottom "RING" DIP switch, if applicable.
4. Set up the bus terminator switch in accordance with the planned wiring.
5. Close the front panel of the coupler.
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Figure 5-1 Setting the PROFIBUS address and redundancy mode
①Bus terminator switch (not relevant for ring or coupler redundancy)
ON: Bus terminating resistor enabled (= default setting)
OFF: Bus terminating resistor disabled
②Bus address 0 (= default setting)
③Redundancy mode (not relevant for non-redundant operation)
ON: Ring redundancy
OFF: Coupler redundancy (= default setting)
Changing the DIP switch and bus terminator settings
This action is not allowed during operation. All changes must be carried out in de-energized
state.
Commissioning: EFD system
5.3 Setting the PROFIBUS address and redundancy mode of the coupler
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 19
5.4 Enabling/disabling extended fieldbus diagnostics at the field
distributor
Commissioning with extended fieldbus diagnostics
To use the field distributor in a system with extended fieldbus diagnostics, you must ensure
that the mode selector of the field distributor is set to diagnostic mode (switch position = "D").
NOTICE
Do not actuate the mode selector of the field distributor during operation
The mode selector of the field distributor must not be actuated during operation.
Note
With the factory setting, extended fieldbus diagnostics are disabled (switch position "C" =
Compatible mode).
The mode selector is on the left next to the IP30 covers, as shown in the following figure.
Figure 5-2 AFDiSD: Mode selector (switch position "D" = Diagnostics mode)
Procedure
If you want to actuate the mode selector, proceed as follows:
1. Switch off the power supplies of the bus link (to interface module and coupler).
2. Select the desired mode selector position.
To enable the extended fieldbus diagnostics at the field distributor, set the mode selector
to position "D".
3. Switch on the power supplies of the bus link.
Commissioning: EFD system
5.4 Enabling/disabling extended fieldbus diagnostics at the field distributor
Extended fieldbus diagnostics in PROFIBUS PA
20 Operating Instructions, 05/2015, A5E32591680-AA
5.5 Configuring the bus link with STEP 7
Configuring the bus link
Configure and assign parameters to the bus segment in STEP 7 as described in the operating
instructions DP/PA coupler, active field distributors, DP/PA Link and Y Link (http://
support.industry.siemens.com/cs/document/1142696):
1. Configure the higher-level DP master system.
2. Configure the lower-level PA master system.
To do this, drag the EFD-compatible components from the hardware catalog into your project:
● In STEP 7, select the interface module "IM 153‑2 OD (EFD)" from the hardware catalog
under "PROFIBUS DP", directory “DP/PA Link”. The article number of the interface module
is displayed in the lower margin of the display window:
6ES7153-2BA70-0XB0.
● In STEP 7, select the "FDC157‑0 (EFD)" coupler(s) from the hardware catalog under
"PROFIBUS DP", directory “DP/PA Link". The article number of the coupler is displayed in
the bar at the bottom edge of the display window:
6ES7157-0AC85-0XA0
Note
Ensure the following:
● The PROFIBUS address that is set on the DIP switch of the coupler is configured in
STEP 7 HW Config.
● When ring redundancy is required:
The FDC 157 on the left ("Coupler 1") has a lower PA address than the FDC 157 on the
right ("Coupler 2").
● PROFIBUS address 124 is not used anywhere on the bus segment.
This is reserved for internal purposes of the EFD system.
Additional settings for the extended fieldbus diagnostics
You have to make the following additional settings for the extended fieldbus diagnostics when
configuring with STEP 7:
1. In the object properties of the interface module:
Activate "Configuration via PDM".
2. In the object properties of the interface module:
Deactivate the option "Startup when expected/actual configuration match" (if active).
3. In the object properties of the coupler:
Select the DP alarm mode "DPV1" in the station parameters.
After completed configuration, load the project to the CPU.
Commissioning: EFD system
5.5 Configuring the bus link with STEP 7
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 21
5.6 Configuring the extended fieldbus diagnostics using SIMATIC PDM
5.6.1 Overview and requirements
You configure the extended fieldbus diagnostics in SIMATIC PDM.
Note
When using the extended fieldbus diagnostics, open the EDD only via HW Config.
If you want to open the EDD via the network view, observe the following:
● Determine which interface module is connected to the master H-CPU.
● For the access, select the interface module that is connected to the master H-CPU.
Requirement
● SIMATIC PDM, including the required license keys, is installed on a computer.
● The computer is connected to an automation system.
● The bus link is completely installed and wired.
● You have created a project in SIMATIC Manager.
● You have created an automation system with a PROFIBUS DP master system in HW
Config.
You have made the additional settings for the extended fieldbus diagnostics (see section
Configuring the bus link with STEP 7 (Page 21)).
● The device description file (EDD) for the interface module is imported.
● The device description files (EDD) for the field devices are imported.
● CPU and bus link (interface module and coupler) are switched on.
● The project is loaded on the CPU.
Note
Before and during configuration of the extended fieldbus diagnostics, the interface module
signals alarms for lower-level components (couplers and field devices) to the automation
system, which you can ignore. These alarms are reported as "outgoing" the farther along
the configuration of the extended fieldbus diagnostics is towards being completed.
Exception: there are other errors in the plant.
Basic procedure
The most important steps are:
● Enable extended fieldbus diagnostics
● Configure the EFD components or check their configuration (interface module, coupler,
field distributors).
Commissioning: EFD system
5.6 Configuring the extended fieldbus diagnostics using SIMATIC PDM
Extended fieldbus diagnostics in PROFIBUS PA
22 Operating Instructions, 05/2015, A5E32591680-AA
● Configure the EFD system or check its configuration.
● Read/save I&M data (Identification & Maintenance) (interface module, coupler, field
distributors)
Possible procedures:
● Recommendation:
Using the Commissioning Wizard for extended fieldbus diagnostics (Page 23)
In order to avoid errors/problems when commissioning, you should use the Commissioning
Wizard.
● Manually configuring the extended fieldbus diagnostics (Page 23)
5.6.2 Using the Commissioning Wizard for extended fieldbus diagnostics
Configuring the extended fieldbus diagnostics using SIMATIC PDM
To configure the extended fieldbus diagnostics, proceed as follows:
1. Select the menu command Device > Commissioning wizard in PDM.
2. Follow the on-screen instructions.
Additional information
You can change the tolerances for measured value deviations for the main line and spur line
in the wizard.
The default parameters can be found in section "Technical specifications (Page 67)".
See also
Elimination of errors with the extended fieldbus diagnostics (Page 44)
5.6.3 Manually configuring the extended fieldbus diagnostics
If you do not want to use the recommended Commissioning Wizard for configuring the
extended fieldbus diagnostics, perform the steps in this section.
Locating field distributors in the plant
SIMATIC PDM provides the "Find AFDiSD x" function for locating field distributors in the plant.
You can find the "Find AFDiSD x" button in the "Device" area of the parameter table of the
"AFDiSD x".
When you click this button, all LEDs of the spur lines to the field devices (S1 to S6) flash for
5 s on the sought-after field distributor.
Commissioning: EFD system
5.6 Configuring the extended fieldbus diagnostics using SIMATIC PDM
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 23
Procedure
1. Start STEP 7 and open your station in HW Config.
2. Double-click the interface module (IM 153-2) in HW Config.
Result: SIMATIC PDM is started.
3. Select the PDM menu command Device > Enable extended fieldbus diagnostics.
Result: The topology of the connected bus segment is determined. This process can take
up to 3 minutes. SIMATIC PDM is blocked during this time.
When the topology discovery is finished, the parameters of the lower-level objects are
displayed in the parameter table in SIMATIC PDM. Some of the parameters can be edited.
4. In SIMATIC PDM, check to make sure the discovered topology/parameters match the actual
topology for the connected bus segment.
Does the displayed arrangement of the field devices in the configuration match the actual
arrangement of the devices in the field?
– Configuration: You can find the serial number in the parameter window.
– Devices in the field: You can find the serial number on the sticker attached to the outside
of the device on its right side.
Association between the parameter table and the actual configuration
– During operation with coupler redundancy, the upper "Coupler 1" button is associated
with the FDC 157 on the left, and the lower button "Coupler 2" is associated with the
FDC 157 on the right.
– The "AFDiSD 1" button is associated with the first field distributor that is connected to
"Coupler 1" .
– The "AFDiSD 2" button is associated with the first field distributor that is connected to
"AFDiSD 1".
Note
Eliminating errors
If errors that require an intervention in the plant occur, follow this sequence to continue with
commissioning:
1. Disable the extended fieldbus diagnostics (see section "Disabling extended fieldbus
diagnostics (Page 41)").
2. Disconnect the plant from the power supply.
3. Eliminate the error(s) in the plant.
4. Reconnect the plant to the power supply.
5. Continue the configuration beginning with step 3 above (menu command Device >
Enable extended fieldbus diagnostics).
5. Enable the utilized spur lines for all field devices in the "Spur line" area of the parameter
table for all field distributors.
6. Select the bus link in SIMATIC PDM and select the menu command Device > Download
to Devices.
Wait about 30 s after the download has finished until the settings take effect.
Commissioning: EFD system
5.6 Configuring the extended fieldbus diagnostics using SIMATIC PDM
Extended fieldbus diagnostics in PROFIBUS PA
24 Operating Instructions, 05/2015, A5E32591680-AA
7. Save the current actual topology of the EFD system as the set topology in the interface
module:
Note:
You must perform this step even if you do not make any changes to the spur line.
– Use the menu command Device > Upload to PG/PC to upload the current data for the
bus link to your programming device or PC.
– Download the data back to the bus link with the menu command Device > Download to
Devices.
Result: The interface module retentively saves the data of the current configuration for
diagnostic purposes. This set topology of the EFD system remains stored even after the
power supply has been switched off.
8. Optional:
Settings in the parameter table:
– You can change the tolerances for measured value deviations for the main line and spur
line in the specified range.
You can find the standard parameters in section "Technical specifications (Page 67)".
If a measure value exceeds or falls below the tolerance range, this leads to an EFD
diagnostic message; see section Elimination of errors with the extended fieldbus
diagnostics (Page 44) for more information.
– You can enter the I&M data (identification and maintenance) of the components
(interface module/coupler/field distributors) according to the plant requirements.
If you have made optional settings, select the menu command Device > Download to
Devices.
9. Clear the error memory (see next section "Clearing the error memory").
Note
Once commissioning is successfully completed (commissioning status "Completed") the
following applies:
● Menu command Device > Upload to PG/PC
Menu command is not executed.
This protects the values stored in the parameter table during commissioning of the EFD
system from inadvertent read-back (Upload to PG/PC). The protection continues to apply
until values are changed in the parameter table.
● Menu command Device > Download to Devices
You can execute the menu command at any time.
Commissioning: EFD system
5.6 Configuring the extended fieldbus diagnostics using SIMATIC PDM
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 25
Clearing the error memory
1. Select the menu command Device > Extended fieldbus diagnostics data.
2. In the "Extended fieldbus diagnostics data" dialog, click the "Overwrite previous status with
current status" button.
The commissioning status is set to "Completed" (green check mark) in the parameter table,
and errors signaled during commissioned are deleted.
Note: You can only set the commissioning status to "Completed" with this button.
Figure 5-3 Overwrite previous status with current status
Commissioning: EFD system
5.6 Configuring the extended fieldbus diagnostics using SIMATIC PDM
Extended fieldbus diagnostics in PROFIBUS PA
26 Operating Instructions, 05/2015, A5E32591680-AA
Figure 5-4 Correct status of the EFD system
3. The status "Diagnostics active" indicates the "GOOD" condition for the components of
the bus segment.
– When the "Diagnostics active" status is indicated for all components on the bus segment:
Check to determine whether the actual configuration of the bus segment components,
especially the values for current and voltage on the main and spur lines, match the
values entered and calculated in the SIMATIC Fieldbus Calculator for this configuration.
– If a status other than "Diagnostics active" is indicated for components on the bus
segment:
You can find information about this in section Elimination of errors with the extended
fieldbus diagnostics (Page 44).
Commissioning: EFD system
5.6 Configuring the extended fieldbus diagnostics using SIMATIC PDM
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 27
4. When the "Commissioning" parameter is marked with the "Diagnostics active" symbol
for all components, commissioning has been successfully completed as far as the extended
fieldbus diagnostics is concerned.
Figure 5-5 Commissioning status "Completed"
5. Select the File > Save menu command.
Commissioning: EFD system
5.6 Configuring the extended fieldbus diagnostics using SIMATIC PDM
Extended fieldbus diagnostics in PROFIBUS PA
28 Operating Instructions, 05/2015, A5E32591680-AA
Service and maintenance 6
6.1 Requirements
Requirement
The following is required for all of the following sub-sections:
● You have successfully commissioned the EFD system (see section Commissioning: EFD
system (Page 17)).
DANGER
Observe safety information
When the equipment is used in a hazardous area, you must observe the safety information
in the Product Information for the DP/PA Coupler, DP/PA Link and Y Link Operating
Instructions. (http://support.industry.siemens.com/cs/document/105657140).
6.2 Replacing components during ongoing operation
Replacement during ongoing operation
See section Overview (Page 44) for help on identifying faulty components and the required
actions after troubleshooting.
You can replace the following components during operation of the bus segment.
● Replacing a redundant interface module, see section Replacing an interface module
(Page 31)
● Replacing a redundant coupler, see section Replacing a coupler (Page 31)
● Replacing a field distributor with ring topology:
– The communication with the field devices connected to the field distributor to be replaced
is interrupted.
Refer to the safety information in the Product Information for the DP/PA Coupler, DP/
PA Link and Y Link Operating Instructions (http://support.industry.siemens.com/cs/
document/105657140) and section Replacing a field distributor (Page 32).
– Replace the PA main line between each pair of adjacent modules in succession (field
distributor to field distributor, field distributor to bus link). This protects field devices
against failure.
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 29
● Replacing a field distributor with line topology. The following communication is interrupted:
– Communication with the field devices connected to the field distributor to be replaced
– Communication with all downstream field distributors and their connected field devices
Refer to the safety information in the Product Information for the DP/PA Coupler, DP/
PA Link and Y Link Operating Instructions (http://support.industry.siemens.com/cs/
document/105657140) and section Replacing a field distributor (Page 32).
● Replacing cables of the PA main line:
– With line topology, the communication with all downstream field distributors and their
connected field devices is interrupted.
Refer to the safety information in the Product Information for the DP/PA Coupler, DP/
PA Link and Y Link Operating Instructions (http://support.industry.siemens.com/cs/
document/105657140).
● Replacing a field device or cabling to the field device
– Communication with the field device is interrupted.
Final steps
● After completing the replacement, check the EFD data.
● Check any diagnostic interrupts that occurred during the replacement.
6.3 Replacing components with restart
Replacement with restart
The replacement of the following components requires restarting the bus link. You must first
switch off the power supplies of the bus link (to the interface module and coupler).
● Replacing a non-redundant interface module, see section Replacing an interface module
(Page 31)
● Replacing a non-redundant coupler, see section Replacing a coupler (Page 31)
● Replacing an active field splitter (AFS)
After making the changes, switch on the power supplies of the bus link again.
Adding/removing a field distributor
Adding or removing a field distributor is a modification of the bus segment's topology .
NOTICE
Re-commissioning required
If you modify the bus segment, you must repeat the commissioning procedure (see section
Modifying an EFD system (Page 37)).
Service and maintenance
6.3 Replacing components with restart
Extended fieldbus diagnostics in PROFIBUS PA
30 Operating Instructions, 05/2015, A5E32591680-AA
See also
Replacing a field distributor (Page 32)
6.4 Replacing an interface module
Requirement
The following requirements must be met for replacing an interface module when extended
fieldbus diagnostics are used:
● You need SIMATIC PDM.
● You have successfully completed the commissioning of the EFD system (see section
Commissioning: EFD system (Page 17)).
Replacing an interface module
Perform the following steps to replace a defective interface module.
1. Disconnect the power supply to the interface module to be replaced.
2. Unplug the bus connector from the PROFIBUS DP interface of the interface module to be
replaced.
3. Replace the interface module with a new (or reset) interface module.
4. Plug the bus connector into the PROFIBUS DP interface of the new module.
5. Set the PROFIBUS address of the new interface module with the DIP switch.
6. Connect the power supply of the new interface module.
7. Restore the configuration data:
– If you have replaced a non-redundant interface module:
Download the configuration data stored in SIMATIC PDM to the bus link with the menu
command Device > Download to Devices.
– If you have replaced a redundant interface model:
The interface module newly inserted in the bus link receives the configuration
automatically from the interface module remaining on the bus segment.
6.5 Replacing a coupler
Requirement
You need SIMATIC PDM.
Service and maintenance
6.5 Replacing a coupler
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 31
Replacing a coupler
Perform the following steps to replace a defective, redundant or non-redundant coupler:
1. Disconnect the power supply of the coupler to be replaced.
2. Disconnect the PROFIBUS PA connection of the coupler to be replaced.
3. Replace the coupler.
4. Set the PROFIBUS address of the new coupler using the DIP switch.
5. If you are using redundancy mode of the coupler:
Set the redundancy mode using the DIP switch.
6. Connect the PROFIBUS PA fieldbus to the new coupler.
7. Connect the power supply of the new coupler.
8. Select the PDM menu command Device > Extended fieldbus diagnostics data.
9. In the "Extended fieldbus diagnostics data" dialog of the associated bus link (interface
module), click the "Overwrite previous status with current status" button to delete errors
signaled during the replacement and to set the commissioning status in the parameter table
to "Completed".
6.6 Replacing a field distributor
DANGER
Explosion hazard
Refer to the safety information in the Product Information for the DP/PA Coupler, DP/PA Link
and Y Link Operating Instructions (http://support.industry.siemens.com/cs/document/
105657140).
Requirement
The following requirements must be met for replacing a field distributor:
● You need SIMATIC PDM for enabled extended fieldbus diagnostics.
● The I&M data of the field distributor have already been saved (together with the
configuration of the bus link) with the menu command File > Save in SIMATIC PDM.
● It is possible to replace a field distributor with ring topology during operation. The following
communication is interrupted:
– Communication with the field devices connected to the field distributor to be replaced
● It is possible to replace a field distributor with line topology during operation. The following
communication is interrupted:
– Communication with the field devices connected to the field distributor to be replaced
– Communication with all downstream field distributors and their connected field devices
Service and maintenance
6.6 Replacing a field distributor
Extended fieldbus diagnostics in PROFIBUS PA
32 Operating Instructions, 05/2015, A5E32591680-AA
Replacing a field distributor
Perform the following steps to replace the field distributor:
1. Remove the 4 screws of the enclosure cover using a Phillips screwdriver.
2. Loosen the black and blue union nuts of the cable glands.
3. Disconnect the PA field devices S1 to S6.
4. Open the IP30 covers T1/T2 and disconnect the main lines.
5. Disconnect the grounding cable of the right or left grounding terminal of the field distributor.
6. Replace the module.
7. Fasten the grounding cable to the right or left grounding terminal of the new field distributor.
8. On the new field distributor, enable extended fieldbus diagnostics using the mode selector
(switch position "D" = Diagnostic mode).
9. Connect the PA field devices to the new field distributor (see DP/PA Coupler, Active Field
Distributors, DP/PA Link and Y Link (http://support.industry.siemens.com/cs/document/
1142696) Operating Instructions, section "Connecting the PROFIBUS PA to the field
distributor").
10.Connect the main lines T1/T2 to the field distributor and close the IP30 covers until you
hear them engage.
11.Tighten the union nuts of the cable glands with 1.3 Nm.
12.Place the enclosure cover on the base and tighten the 4 screws with the plain washers on
the enclosure with 2.4 Nm.
13.In the EDD file of the interface module in SIMATIC PDM, select the menu command Device
> Extended fieldbus diagnostics data.
14.Press the "Topology" button to open the "Topology" dialog.
Service and maintenance
6.6 Replacing a field distributor
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 33
15.In the "Topology" dialog, click the button of the new field distributor to enter the serial
number of the new field distributor in the parameter table. (If the serial number of the field
distributor in the parameter table matches the current serial number in the "Topology"
dialog, a corresponding message appears).
Figure 6-1 Topology
16.Download the field distributor data stored in SIMATIC PDM to the bus link with the menu
command Device > Download to Devices.
17.In the "Extended fieldbus diagnostics data" dialog of the associated bus link (interface
module), click the "Overwrite previous status with current status" button to delete errors
signaled during the replacement and to set the commissioning status in the parameter table
to "Completed".
18.Select the File > Save menu command.
6.7 Adding/removing/replacing field devices during operation
6.7.1 Adding/removing/replacing a field device during operation using the wizard
Requirement
The following requirements must be met for adding/removing a field device during operation:
● You need SIMATIC PDM.
● After enabling the spur line, you have to perform the usual CiR operations in STEP 7/
SIMATIC PCS 7.
Service and maintenance
6.7 Adding/removing/replacing field devices during operation
Extended fieldbus diagnostics in PROFIBUS PA
34 Operating Instructions, 05/2015, A5E32591680-AA
Procedure
To add/remove a field device, follow these steps:
1. If necessary, connect the field device to the existing field distributor during operation.
2. Select the menu command Device > Commissioning wizard in PDM.
3. Follow the on-screen instructions.
Note
Replacing a field device (Commissioning Wizard: Step 4)
Always click Update.
This ensures that the actual values of the EFD system are subsequently transferred to the
interface module as setpoints.
6.7.2 Manually adding/removing/replacing a field device during operation
Recommendation:
Always plan for reserve connections on the field distributor. These reserve connections allow
you to flexibly expand the bus segment.
Requirement
The following requirements must be met for adding/removing a field device during operation:
● You need SIMATIC PDM.
● After enabling the spur line, you have to perform the usual CiR operations in STEP 7/
SIMATIC PCS 7.
Manually adding/removing a field device
Check the configuration of the bus segment to which the field device is added with the SIMATIC
Fieldbus Calculator.
Adding/removing a field device in the plant
● Adding a field device:
Connect the field device to a previously unused spur line of a field distributor.
● Removing a field device:
Connect the field device to a previously unused spur line of a field distributor.
Configuration
1. Start STEP 7, and open your SIMATIC station in HW Config.
2. Double-click the interface module in HW Config.
Result: SIMATIC PDM is started.
Service and maintenance
6.7 Adding/removing/replacing field devices during operation
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 35
3. Perform the following in the parameter table for the corresponding field distributor:
– Adding a field device:
Enable the associated spur line to the field device in the parameter table.
– Removing a field device:
Disable the associated spur line to the field device in the parameter table.
4. Close the warning displayed.
5. Select the bus link in SIMATIC PDM and select the menu command Device > Download
to Devices.
Wait approximately 30 s after the download is finished for the settings to take effect.
6. Save the current actual topology of the EFD system as the set topology in the interface
module:
Note:
You must perform this step even if you do not make any changes to the spur line.
– Use the menu command Device > Upload to PG/PC to upload the current data for the
bus link to your programming device or PC.
– Download the data back to the bus link with the menu command Device > Download to
Devices.
Result: The interface module retentively saves the data of the current configuration for
diagnostic purposes. This set topology of the EFD system remains stored even after the
power supply has been switched off.
7. Clear the error memory (see next section "Clearing the error memory").
8. Adding a field device only:
Carry out the CiR operations for adding a field device in STEP 7/SIMATIC PCS 7.
The full sequence of a system modification and the requirements that must be met for it
are described in detail in the manuals:
– Modifying the System During Operation via CiR (http://support.industry.siemens.com/cs/
document/14044916?lc=en-US)
– Fault-tolerant Systems S7-400H (http://support.industry.siemens.com/cs/document/
1186523?lc=en-US), section "System modifications during operation".
Replacing a field device
Check the configuration of the bus segment to which the field device is added with the SIMATIC
Fieldbus Calculator.
Replacing a field device in the plant
1. Connect the field device to the previously unused spur line.
Configuration
1. Start STEP 7, and open your SIMATIC station in HW Config.
2. Double-click the interface module in HW Config.
Result: SIMATIC PDM is started.
3. Disable the associated spur line to the field device in the parameter table for the
corresponding field distributor.
This sets the commissioning status of the field device to "Not completed".
Service and maintenance
6.7 Adding/removing/replacing field devices during operation
Extended fieldbus diagnostics in PROFIBUS PA
36 Operating Instructions, 05/2015, A5E32591680-AA
4. Close the warning displayed.
5. Enable the associated spur line to the field device in the parameter table for the
corresponding field distributor.
6. Save the current actual topology of the EFD system as the set topology in the interface
module:
Note:
You must perform this step even if you do not make any changes to the spur line.
– Use the menu command Device > Upload to PG/PC to upload the current data for the
bus link to your programming device or PC.
– Download the data back to the bus link with the menu command Device > Download to
Devices.
Result: The interface module retentively saves the data of the current configuration for
diagnostic purposes. This set topology of the EFD system remains stored even after the
power supply has been switched off.
7. Clear the error memory (see next section "Clearing the error memory").
Clearing the error memory
1. Double-click the interface module in HW Config.
Result: SIMATIC PDM is started.
2. Select the menu command Device > Extended fieldbus diagnostics data.
3. Click the "Overwrite previous status with current status" button in the "Extended fieldbus
diagnostics data" dialog.
4. Select the File > Save menu command.
6.8 Modifying an EFD system
Definition
Modification of an EFD system means, for example, adding/removing a field distributor.
Modifying a bus segment
You can modify a bus segment during operation if the following applies:
● Adding/removing of field devices to/from the existing field distributor
● Adding/removing of a field distributor at the end of the bus segment
– In non-redundant mode
– With coupler redundancy
– With ring redundancy (the end of the bus segment is located before the coupler on the
right).
Service and maintenance
6.8 Modifying an EFD system
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 37
Note
Modification of the bus segment before the last field distributor
If you modify a bus segment before the end of the bus segment, you must accept the fact that
problems will occur starting from the "disconnection point" even with a redundant configuration.
Pay attention to where you modify the bus segment.
● The bus addresses of the field distributors after the "disconnection point" are changed.
● After the "disconnection point", communication with the field devices located in the segment
is disturbed. It is possible that process values will not be transmitted.
To modify a bus segment, follow these steps:
1. Switch off the power supplies of the bus link (to interface module and coupler).
2. Verify the new configuration (number of components, total current) of the bus segment with
the SIMATIC Fieldbus Calculator (http://support.industry.siemens.com/cs/document/
53842953).
3. Make desired changes to the bus segment in accordance with the results.
4. Switch on the power supplies of the bus link again.
5. Repeat the commissioning, see section Commissioning: EFD system (Page 17).
6.9 Firmware update of the field distributor
When should you update the firmware?
When a plant stoppage is scheduled, you should check whether an update of the firmware
version is available. New firmware version generally offers added functions or performance
improvements.
Recommendation: Update the components to the newest firmware version (update) in each
case.
"Activate firmware after download" option
Note the possible effects of the "Activate firmware after download" option:
Option is disabled
● The firmware update download does not have any effect on the ongoing operation of the
bus link.
● The new firmware is stored in the field distributor and is only activated at the next restart
of the field distributor, which means that the startup takes longer on this occasion.
Service and maintenance
6.9 Firmware update of the field distributor
Extended fieldbus diagnostics in PROFIBUS PA
38 Operating Instructions, 05/2015, A5E32591680-AA
Option is enabled
After the firmware update has been downloaded, the field distributor carries out a restart so
that field devices connected to the field distributor are disconnected from the bus segment.
● In case of non-redundant operation or operation with coupler redundancy:
– All field distributors from the updated field distributor onwards are shut down briefly (time
for a restart), including all connected field devices.
– All field distributor after the updated field distributor are integrated in the bus segment
again.
● In case of operation with ring redundancy:
– Updating the firmware of a field distributor does not have any effect on the ongoing
operation of the remaining bus segment.
– The updated field distributor is shut down for a restart, including the connected field
devices.
Firmware update blocked
If a firmware update has been interrupted, the status of the field distributor is not defined. A
restart of the field distributor is required because a repeated attempt to perform the firmware
update is blocked. Switch the field distributor off and back on as soon as possible.
Requirement
● You need the associated STEP 7 project including SIMATIC PDM.
● The current version of the firmware of the field distributor is known.
● You have specified the time for installing the new firmware (see: "Activating firmware after
download" option)
● Ensure that the required firmware version is available on the PDM computer.
You can find the firmware versions on the Internet pages of the Industry Online Support
(http://support.industry.siemens.com).
Carrying out a firmware update
To update the firmware of the field distributor, proceed as follows:
1. Connect the programming device or PC with the PROFIBUS parameters suitable for the
plant configuration directly to the PROFIBUS interface of the interface module.
2. Double-click the interface module in HW Config.
Result: SIMATIC PDM is started.
3. Select the PDM menu command Device > Extended fieldbus diagnostics data.
4. In the "Extended fieldbus diagnostics data" dialog. click the button of the field distributor
whose firmware you want to update.
Service and maintenance
6.9 Firmware update of the field distributor
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 39
5. Open the "Device" tab.
Note
Button "Find AFDiSD x"
You can use the "Find AFDiSD x" button to check whether you have selected the desired
field distributor.
When you click this button, all LEDs of the spur lines to the field devices (S1 to S6) flash
for 5 s on the sought-after field distributor.
6. Take the PROFIBUS address of the bus link and the slot number of the selected field
distributor from the "Device" tab under "Address information for firmware update".
Figure 6-2 Firmware update of the AFDiSD
7. Note down the address information for all field distributors and close SIMATIC PDM.
8. In SIMATIC Manager, select the PLC > Accessible Nodes menu command.
9. In the list that is displayed, select the interface module with the desired PROFIBUS address
and select the PLC > PROFIBUS > Update Firmware menu command. The remaining
procedure is described in the STEP 7 online help.
10.Click the "Select slot" button and enter the slot number of the selected field distributor in
the dialog that follows.
11.Download the firmware version for a field distributor.
Service and maintenance
6.9 Firmware update of the field distributor
Extended fieldbus diagnostics in PROFIBUS PA
40 Operating Instructions, 05/2015, A5E32591680-AA
12.Check the specifications in the dialog.
13.Optional: You can enable or disable (=factory setting) the "Activate firmware after
download" option (see below).
14.Click "Execute".
15.Repeat the procedure for all field distributors in the bus segment so that all field distributors
have the same firmware version afterwards.
Activating and checking new firmware
Activating new firmware
● If you have used the "Activate firmware after download" option for the firmware update, the
new firmware has been activated.
● If the new firmware has not taken effect, the "Activate firmware after download" option was
not activated for the update.
The bus segment must be restarted. Switch the bus link off and back on when possible.
Checking the firmware version and clearing the error memory
1. Double-click the interface module in HW Config.
Result: SIMATIC PDM is started.
2. Check the current firmware version of each field distributor with the menu command Device
> Extended fieldbus diagnostics data.
3. After the last field distributor has been updated, click the "Overwrite previous status with
current status" button in the "Extended fieldbus diagnostics data" dialog to delete the errors
signaled during the firmware update.
4. Select the File > Save menu command.
6.10 Disabling extended fieldbus diagnostics
When the extended fieldbus diagnostics is disabled, the communication with all field devices
in the segment is temporarily interrupted.
Requirement
To disable extended fieldbus diagnostics, you need the associated STEP 7 project including
SIMATIC PDM.
Disabling fieldbus diagnostics
1. In PDM, select the menu command Device > Disable extended fieldbus diagnostics.
2. Follow the on-screen instructions.
3. Save the current set topology in SIMATIC PDM with menu command File > Save.
Service and maintenance
6.10 Disabling extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 41
Additional information
● Section "Enabling/disabling extended fieldbus diagnostics at the field distributor (Page 20)":
● Section "Resetting the interface module (Page 17)":
Service and maintenance
6.10 Disabling extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
42 Operating Instructions, 05/2015, A5E32591680-AA
Alarm, fault and system messages 7
7.1 Diagnostics using LED displays
7.1.1 LED displays of the interface module
The information in the DP/PA Coupler, Active Field Distributors, DP/PA Link and Y Link (http://
support.industry.siemens.com/cs/document/1142696) Operating Instructions and in the
supplemental Product Information for the DP/PA Coupler, ... Operating Instructions (http://
support.industry.siemens.com/cs/document/105657140) applies to the LED displays of the
interface module.
When the extended fieldbus diagnostics is used, the LED displays change several times during
commissioning and only show the desired pattern upon completion of commissioning.
7.1.2 LED displays of the coupler
The information in the DP/PA Coupler, Active Field Distributors, DP/PA Link and Y Link (http://
support.industry.siemens.com/cs/document/1142696) Operating Instructions applies to the
LED displays of the coupler.
When the extended fieldbus diagnostics is used, the LED displays change several times during
commissioning and only show the desired pattern upon completion of commissioning.
7.1.3 LED displays of the field distributor
The information in the DP/PA Coupler, Active Field Distributors, DP/PA Link and Y Link (http://
support.industry.siemens.com/cs/document/1142696) Operating Instructions and in the
supplemental Product Information for the DP/PA Coupler, ... Operating Instructions (http://
support.industry.siemens.com/cs/document/105657140) applies to the LED displays of the
field distributor.
When the extended fieldbus diagnostics is used, the LED displays change several times during
commissioning and only show the desired pattern upon completion of commissioning.
LEDs for non-activated spur lines generally remain "off".
7.2 Diagnostics of the interface module
Use SIMATIC PDM for the diagnostics of the EFD system, see section Elimination of errors
with the extended fieldbus diagnostics (Page 44).
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 43
The information on diagnostics of the interface module in the DP/PA Coupler, Active Field
Distributors, DP/PA Link and Y Link (http://support.industry.siemens.com/cs/document/
1142696) Operating Instructions also applies.
7.3 Diagnostics of the coupler
Use SIMATIC PDM for the diagnostics of the EFD system, see section Elimination of errors
with the extended fieldbus diagnostics (Page 44).
The information on diagnostics of the coupler in the DP/PA Coupler, Active Field Distributors,
DP/PA Link and Y Link (http://support.industry.siemens.com/cs/document/1142696)
Operating Instructions also applies.
7.4 Elimination of errors with the extended fieldbus diagnostics
7.4.1 Overview
Causes of error and corrective measures
In the following sections, you can find the possible error causes and corrective measures for
the diagnostic messages of the extended fieldbus diagnostics in the “Extended fieldbus
diagnostics data" dialog for topology, coupler and field distributor.
DANGER
Observe safety information
If used in a hazardous area, you must observe the safety information in the Product
Information for the operating instructions DP/PA coupler, ... (http://
support.industry.siemens.com/cs/document/105657140).
Note
Take into account whether the corrective measures carried out require a restart or not. Refer
to the sections Replacing components during ongoing operation (Page 29) and Replacing
components with restart (Page 30).
If a corrective measure can be carried out during operation, carry it out. In this case, you can
check whether it was successful by clicking the "Overwrite previous status with current status"
button.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
44 Operating Instructions, 05/2015, A5E32591680-AA
Messages after voltage recovery
After a voltage recovery, EFD system messages may be triggered (e.g. due to active warning
and alarm limits). Check whether the causes of the messages persist. If the EFD system is
operating error-free, you can clear the error memory (see section "Manually adding/removing/
replacing a field device during operation (Page 35); Clearing the error memory").
Disabled messages
Certain warning and alarm limits can be disabled using PDM.
For example, if you have disabled the limit for "Trunk Jitter Max", you will not receive messages
for this physical value:
● No "Maintenance required" warnings
● No "Out of specification" alarms
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 45
Procedure
1. You must open SIMATIC PDM for the diagnostics of the EFD system.
– If a PCS 7 Maintenance Station is present in the plant and it has access to the
engineering station with SIMATIC PDM, you can open SIMATIC PDM in the case of a
message related to the EFD system directly from this message.
– You can open SIMATIC PDM via HW Config. Double-click the interface module in HW
Config.
2. Select the status overview of the complete EFD system online with the menu command
Device > Extended fieldbus diagnostics data.
3. Check the received status messages in the "Extended fieldbus diagnostics data" dialog.
Figure 7-1 Online status overview of the EFD system
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
46 Operating Instructions, 05/2015, A5E32591680-AA
Symbols for the diagnostics status signals of the extended fieldbus diagnostics
The status signals of the extended fieldbus diagnostics are displayed with the following
symbols depending on the severity:
Table 7-1 Symbols for the display of the status signals
Symbol in status overview Meaning
FAILURE: (according to Namur NE 107)
E.g. component defective, short-circuit, wire break, etc.
OUT OF SPECIFICATION: (according to Namur NE 107)
Measured value violates the high or low alarm limit specific to the device
(alarm)
(see "Technical specifications (Page 67)"; Tolerances for measured value
deviations for main line and spur line)
MAINTENANCE REQUIRED: (according to Namur NE 107)
Measured value violates the high or low warning limit defined by the user
(warning)
(see "Technical specifications (Page 67)"; Tolerances for measured value
deviations for main line and spur line)
Note
This action, which requires a decision, needs your attention.
Diagnostics active
Component is functioning properly.
Current status and previous status
The "Extended fieldbus diagnostics data" dialog and the lower-level dialogs for "Topology",
"Coupler" and "AFDiSD" additionally display the status signals for two different states of the
EFD system:
● "Current status"
This column displays the status of the EFD system and its components on the basis of the
last monitoring cycle.
● "Previous status"
This column displays the most serious error since the commissioning status was last set
to "Completed" (by means of the "Overwrite previous status with current status" button).
These two columns help, for example, by showing an error which incurred after the last setting
the commissioning status to "Completed" (= previous status: "Outside the specification"), but
was not detected during the most recent monitoring cycle (= actual status: "Diagnostics
active"). This can be caused, for example, by a loose contact on a spur line.
Locating field distributors in the plant
SIMATIC PDM provides the "Find AFDiSD x" function for locating field distributors in the plant.
You can find the "Find AFDiSD x" button in the "Device" area of the parameter table of the
"AFDiSD x".
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 47
When you click this button, all LEDs of the spur lines to the field devices (S1 to S6) flash for
5 s on the sought-after field distributor.
Rules
● Always handle EFD alarms first.
● Work through the status overview of the EFD bus segment from top to bottom and handle
the error messages in accordance with their severity. A failure can be the reason for the
display of further error or maintenance required messages at the subsequent components
in the bus segment. When a failure is eliminated, it is therefore possible that subsequent
error displays are also eliminated.
● Deal with all the components that are identified by the "Failure" symbol first:
– Click the respective option button to open the associated dialog of the affected
component.
– Eliminate the displayed error. For this purpose, read the information in the following
sections.
– Update the "Extended fieldbus diagnostics data" dialog by clicking the "Overwrite
previous status with current status" button.
● Next, handle all error messages that are identified by the symbol "Outside the
specification" in the same manner.
●Finally, handle all error messages that are marked with the symbol "Maintenance required"
in the same manner.
● Eliminate any further errors displayed until all the status displays are set to "Diagnostics
active".
● When no more EFD alarms are displayed: Eliminate any other existing errors.
7.4.2 Topology
7.4.2.1 Topology: Eliminating the "Failure" diagnostics status
Requirement
In the "Extended fieldbus diagnostics data" dialog, one or more "Failure" diagnostics states
exist for the topology.
Procedure
1. In the "Extended fieldbus diagnostics data" dialog, click the "Topology" button.
Result: The "Topology - (online)" dialog opens.
2. Eliminate the "Failure" diagnostics status in the topology using the following table of
possible error causes and corrective measures.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
48 Operating Instructions, 05/2015, A5E32591680-AA
Causes of error and corrective measures
In the following table, you can find the possible error causes and corrective measures for the
"Failure" diagnostics status in the topology of the EFD system.
DANGER
Observe safety information
If used in a hazardous area, you must observe the safety information in the Product
Information for the DP/PA Coupler, ... (http://support.industry.siemens.com/cs/document/
105657140) Operating Instructions.
Before starting work, disconnect the affected component from the power supply.
Table 7-2 Topology - "Failure" diagnostics status in the "Topology - (Online)" dialog
Error in ... Possible causes of error Corrective measures
Coupler mode:
"Actual topology"
column
More couplers exist than were configured. Adapt the configuration.
Adjust the number of couplers in the bus segment.
Two couplers are configured, but the redundancy
modes set at the couplers do not match.
Set the same redundancy mode at both couplers.
Check the redundancy mode in the configuration.
"Set topology"
column:
A serial number
of a field distribu‐
tor is entered,
however not in
the "Actual topol‐
ogy" column.
Wiring faulty, for example, wire break at the field
distributor or coupler (coupler also indicates a fail‐
ure)
Check the process wiring of the surrounding com‐
ponents and, if possible, eliminate the fault.
Component defective or missing (coupler, active
field splitter (AFS), field distributor )
Check the higher-level components in the hierarch‐
ical structure of the bus segment for failures. Elimi‐
nate the first occurring failure.
For information on replacing a defective field dis‐
tributor, see section Replacing a field distributor
(Page 32).
"Actual topology"
column:
A serial number
of a field distribu‐
tor is entered,
however not in
the "Set topolo‐
gy" column.
An additional field distributor is connected in com‐
parison to the set topology.
Remove the superfluous field distributor.
Number of con‐
figured couplers
The permissible number of configured couplers has
been exceeded.
Check the number of configured couplers and re‐
move the superfluous ones.
Wrong bus module used. Replace the bus module used with the bus module
BM FDC/FDC (redundant) or correct the number of
configured couplers in HW Config.
Number of con‐
nected field dis‐
tributors
The permissible number of connected field distrib‐
utors has been exceeded.
Check the number of connected field distributors
and remove the superfluous ones.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 49
7.4.2.2 Topology: Correcting the diagnostics status "Outside the specification"
Requirement
In the "Extended fieldbus diagnostics data" dialog, there is one or more "Out of specification"
diagnostics states for the topology.
Procedure
1. In the "Extended fieldbus diagnostics data" dialog, click the "Topology" button.
Result: The "Topology - (online)" dialog opens.
2. Eliminate the "Out of specification" diagnostics status in the topology using the following
table of possible error causes and corrective measures.
Causes of error and corrective measures
In the following table, you can find the possible error causes and corrective measures for the
"Out of Specification" diagnostics status in the set topology of the EFD system.
DANGER
Observe safety information
If used in a hazardous area, you must observe the safety information in the Product
Information for the DP/PA Coupler, ... (http://support.industry.siemens.com/cs/document/
105657140) Operating Instructions.
Before starting work, disconnect the affected component from the power supply.
Table 7-3 Topology - "Out of specification" diagnostics status in the "Topology - (Online)" dialog
Error in ... Possible causes of error Corrective measures
Coupler mode:
Redundancy modes in‐
consistent:
● "Set topology"
column and
● "Actual topology"
column
Deviating redundancy mode detected in
the plant:
● Redundancy mode in the set topology
of the EFD system in the interface
module
● Redundancy mode that is set on the
coupler ("RING" DIP switch)
Check the set redundancy mode on the coupler pair
and the set topology in the interface module. Ensure
that the set redundancy mode matches.
● Error on the coupler:
Switch off the coupler and correct the redundancy
mode. Switch on the coupler
● No error in the settings or error persists after
correction of the settings:
Save the set topology again (see step 7 "Manually
configuring the extended fieldbus diagnostics
(Page 23)").
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
50 Operating Instructions, 05/2015, A5E32591680-AA
7.4.2.3 Topology: Changing the diagnostics status "Maintenance required"
Requirement
In the "Extended fieldbus diagnostics data" dialog, there is one or more "Maintenance required"
diagnostics states for the topology.
Procedure
1. In the "Extended fieldbus diagnostics data" dialog, click the "Topology" button.
Result: The "Topology - (online)" dialog opens.
2. Change the "Maintenance required" diagnostics status in the topology using the following
table of possible error causes and corrective measures.
Causes of error and corrective measures
In the following table, you can find the possible error causes and corrective measures for the
"Maintenance required" diagnostics status in the topology of the EFD system.
DANGER
Observe safety information
If used in a hazardous area, you must observe the safety information in the Product
Information for the DP/PA Coupler, ... (http://support.industry.siemens.com/cs/document/
105657140) Operating Instructions.
Before starting work, disconnect the affected component from the power supply.
Table 7-4 Topology - "Maintenance required" diagnostics status in the "Topology - (Online)" dialog
Error in Possible causes of error Corrective measures
Serial number of
the field distribu‐
tor:
Serial numbers in
the "Set topolo‐
gy" column and
"Actual topology"
column do not
match.
Field distributors with different serial numbers
connected.
You may be currently replacing a defective field dis‐
tributor, see section Replacing a field distributor
(Page 32).
Replace the field distributor with the field distributor
with the correct serial number.
Field distributor incorrectly wired (e.g. wrong or‐
der).
Check the process wiring.
Repeat the commissioning, see section Commission‐
ing: EFD system (Page 17).
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 51
7.4.3 Coupler
7.4.3.1 Coupler: Eliminating the "Failure" diagnostics status
Requirement
In the "Extended fieldbus diagnostics data" dialog, there is one or more "Failure" diagnostics
states for the coupler.
Procedure
1. In the "Extended fieldbus diagnostics data" dialog, click the "Coupler 1" or "Coupler 2"
button.
Result: The "Coupler x - (online)" dialog opens.
2. Open the "Diagnostics data" dialog.
3. Eliminate the "Failure" diagnostics status for the coupler using the following table of possible
error causes and corrective measures.
Causes of error and corrective measures
In the following table, you can find the possible error causes and corrective measures for the
"Failure" diagnostics status for the coupler.
DANGER
Observe safety information
If used in a hazardous area, you must observe the safety information in the Product
Information for the DP/PA Coupler, ... (http://support.industry.siemens.com/cs/document/
105657140) Operating Instructions.
Before starting work, disconnect the affected component from the power supply.
Table 7-5 Coupler - "Failure" diagnostics status in the "Coupler x - (Online)" > "Diagnostics data" dialog
Error Possible causes of error Corrective measures
Short-circuit Short-circuit between coupler and the following field
distributor
Check the process wiring between the coupler and
the first connected field distributor, if possible, elimi‐
nate the error.
Wire break Wire break between coupler and the following field
distributor
The IP30 cover of the connected field distributor is
open.
Close the IP30 cover of the connected field distribu‐
tor.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
52 Operating Instructions, 05/2015, A5E32591680-AA
7.4.3.2 Coupler: Correcting the diagnostics status "Outside the specification"
Requirement
In the "Extended fieldbus diagnostics data" dialog, there is one or more "Out of specification"
diagnostics states for the coupler.
Procedure
1. In the "Extended fieldbus diagnostics data" dialog, click the "Coupler 1" or "Coupler 2"
button.
Result: The "Coupler x - (online)" dialog opens.
2. Open the "Diagnostics data" dialog or the "Physical layer" dialog.
3. Eliminate the "Out of specification" diagnostics status for the coupler using the following
table of possible error causes and corrective measures.
Note
The active supplying or active conducting coupler in a redundant configuration only provides
a current value; the passive coupler in a redundant configuration provides only a voltage value.
Causes of error and corrective measures
In the following table, you can find the possible error causes and corrective measures for the
"Out of specification" diagnostics status for the coupler.
DANGER
Observe safety information
If used in a hazardous area, you must observe the safety information in the Product
Information for the DP/PA Coupler, ... (http://support.industry.siemens.com/cs/document/
105657140) Operating Instructions.
Before starting work, disconnect the affected component from the power supply.
Table 7-6 Table 1: Coupler - "Out of specification" diagnostics status in the "Coupler x - (Online)" > "Diagnostics data"
dialog
Error Possible causes of error Corrective measures
Wrong redundancy
mode
Difference in redundancy mode detected
between the redundancy mode set on the
coupler ("RING" DIP switch) and the con‐
figured redundancy mode in HW Config
(ring or coupler redundancy).
Check the set redundancy mode on the coupler pair
and in the configuration. The set redundancy mode
must match. Make the necessary adjustment.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 53
Table 7-7 Table 2: Coupler - "Out of specification" diagnostics status in the "Coupler x - (Online)" > "Physical Layer" dialog
Error Possible causes of error Corrective measures
Coupler voltage below
the set warning limit
Wrong cable Check the cable type.
Terminal resistance is too high (corrosion,
missing screw)
Check the terminal resistors.
Cable too long (cable resistance to high) Check the configuration of the bus segment with the
SIMATIC Fieldbus Calculator (http://
support.industry.siemens.com/cs/document/
53842953).
Coupler voltage above
the set warning limit
Defective coupler Check the coupler and replace it, if necessary.
Coupler current above
the set warning limit
Cable error Check the wiring of the bus segment for a resistive load
between "+" and "-".
Too many devices connected to bus seg‐
ment
Check the configuration of the bus segment with the
SIMATIC Fieldbus Calculator (http://
support.industry.siemens.com/cs/document/
53842953). Check if too many devices are connected
to the bus segment and remove some, if necessary.
See also
Technical specifications (Page 67)
Fieldbus Calculator (http://support.industry.siemens.com/cs/document/53842953)
7.4.3.3 Coupler: Changing the diagnostics status "Maintenance required"
Requirement
In the "Extended fieldbus diagnostics data" dialog, there is one or more "Maintenance required"
diagnostics states for the coupler.
Procedure
1. In the "Extended fieldbus diagnostics data" dialog, click the "Coupler 1" or "Coupler 2"
button.
Result: The "Coupler x - (online)" dialog opens.
2. Open the "Physical layer" dialog.
3. Change the "Maintenance required" diagnostics status for the coupler using the following
table of possible error causes and corrective measures.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
54 Operating Instructions, 05/2015, A5E32591680-AA
Causes of error and corrective measures
In the following table, you can find the possible error causes and corrective measures for the
"Maintenance required" diagnostics status for the coupler.
DANGER
Observe safety information
If used in a hazardous area, you must observe the safety information in the Product
Information for the DP/PA Coupler, ... (http://support.industry.siemens.com/cs/document/
105657140) Operating Instructions.
Before starting work, disconnect the affected component from the power supply.
Table 7-8 Coupler - "Maintenance required" diagnostics status in the "Coupler x - (Online)" > "Physical Layer" dialog
Error Possible causes of error Corrective measures
Coupler voltage be‐
low the set warning
limit
Current consumption of the field distributors or
field devices has changed. This may indicate im‐
minent failure of the field distributor or field device.
Check the current consumption of the field distrib‐
utors and the field devices (see section Field dis‐
tributor: Correcting the diagnostics status "Out of
specification" (Page 57)). Replace the affected
field distributor or field device, if necessary.
Field distributors or field devices were added to
the bus segment.
Check if field distributors or field devices were
added to the bus segment. Remove these or save
the set topology again (see step 7 "Manually con‐
figuring the extended fieldbus diagnostics
(Page 23)").
Coupler current be‐
low the set warning
limit
Current consumption of the field distributors or
field devices has changed. This may indicate im‐
minent failure of the field distributor or field device.
Check the current consumption of the field distrib‐
utors and the field devices (see section Field dis‐
tributor: Correcting the diagnostics status "Out of
specification" (Page 57)). Replace the affected
field distributor or field device, if necessary.
Field distributors or field devices were added to
the bus segment.
Check if field distributors or field devices were
added to the bus segment. Remove these or save
the set topology again (see step 7 "Manually con‐
figuring the extended fieldbus diagnostics
(Page 23)").
Coupler current
above the set warn‐
ing limit
Current consumption of the field distributors or
field devices has changed. This may indicate im‐
minent failure of the field distributor or field device.
Check the current consumption of the field distrib‐
utors and the field devices (see section Field dis‐
tributor: Correcting the diagnostics status "Out of
specification" (Page 57)). Replace the affected
field distributor or field device, if necessary.
See also
Technical specifications (Page 67)
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 55
7.4.4 Field distributor
7.4.4.1 Field distributor: Eliminating the "Failure" diagnostics status
Requirement
In the "Extended fieldbus diagnostics data" dialog, there is one or more "Failure" diagnostics
states for a field distributor.
Locating field distributors in the plant
SIMATIC PDM provides the "Find AFDiSD x" function for locating field distributors in the plant.
You can find the "Find AFDiSD x" button in the "Device" area of the parameter table of the
"AFDiSD x".
When you click this button, all LEDs of the spur lines to the field devices (S1 to S6) flash for
5 s on the sought-after field distributor.
Procedure
1. In the "Extended fieldbus diagnostics data" dialog, click the "AFDiSD x" button.
Result: The "AFDiSD x - (online)" dialog opens.
2. Select the "Main line" dialog or the "Spur line" dialog.
3. Eliminate the "Failure" diagnostics status for the field distributor using the following table
of possible error causes and corrective measures.
Causes of error and corrective measures
In the following table, you can find the possible error causes and corrective measures for the
"Failure" diagnostics status for the field distributor.
DANGER
Observe safety information
If used in a hazardous area, you must observe the safety information in the Product
Information for the DP/PA Coupler, ... (http://support.industry.siemens.com/cs/document/
105657140) Operating Instructions.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
56 Operating Instructions, 05/2015, A5E32591680-AA
Before starting work, disconnect the affected component from the power supply.
Table 7-9 Table 1: "Failure" diagnostics status in the "AFDiSD x - (online)" > "Main line" - T1 or T2 dialog
Error Possible causes of error Corrective measures
Wire break Wire break on a specified main line Check the cable of the affected main line and the
connection in the field distributor or adjacent com‐
ponents for faults.
The IP30 cover of the adjacent field distributor is
open.
Check if the IP30 cover of the adjacent field distrib‐
utor is open.
Field distributor is not working properly because
supply voltage has fallen below the physical limit
Check the wiring of the bus segment with the SI‐
MATIC Fieldbus Calculator (http://
support.industry.siemens.com/cs/document/
53842953).
Short-circuit Short-circuit on a specified main line Check the cable of the affected main line and the
connection in the field distributor or adjacent com‐
ponents for faults.
Field distributor is not working properly because
supply voltage has fallen below the physical limit
Check the wiring of the bus segment with the SI‐
MATIC Fieldbus Calculator (http://
support.industry.siemens.com/cs/document/
53842953).
Cover open The IP30 cover of the specified main line is open. Close the IP 30 cover.
Table 7-10 Table 2: "Failure" diagnostics status in the "AFDiSD x - (online)" > "Spur line" - S1 - S6 dialog
Error in ... Possible causes of error Corrective measures
Wire break Spur line cable is not attached correctly to the screw
terminal.
Check the connection of the affected spur line cable.
Field device disconnect from spur line Connect the field device again to the spur line.
Wire break on a specified spur line Check the cable of the affected spur line for faults.
Terminal resistance is too high (corrosion, missing
screw)
Check the terminal resistance of the affected field
distributor spur line.
Short-circuit Spur line cable is not attached correctly to the screw
terminal.
Check the connection of the affected spur line cable.
Short-circuit on a specified spur line Check the cable of the affected spur line for faults.
Power consumption of a field device is too high for
the spur line.
Verify that the power consumption of the field device
is within the allowable range of the spur line.
Connected field device is defective Replace the defective field device.
7.4.4.2 Field distributor: Correcting the diagnostics status "Out of specification"
Requirement
In the "Extended fieldbus diagnostics data" dialog, there is one or more "Out of specification"
diagnostics states for a field distributor.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 57
Locating active field distributors in the plant
SIMATIC PDM provides the "Find AFDiSD x" function for locating active field distributors in
the plant.
You can find the "Find AFDiSD x" button in the "Device" area of the parameter table of the
"AFDiSD x".
When you click this button, all LEDs of the spur lines to the field devices (S1 to S6) flash for
5 s on the sought-after field distributor.
Procedure
1. In the "Extended fieldbus diagnostics data" dialog, click the "AFDiSD x" button.
Result: The "AFDiSD x - (online)" dialog opens.
2. Select the "Main line" dialog or the "Spur line" dialog.
3. Eliminate the "Out of specification" diagnostics status for the field distributor using the
following table of possible error causes and corrective measures.
Note
To localize the faults (signal level, capacitive unbalance, signal noise) shown in the "Main line
- General" dialog, you must check all parts of the main line for unknown devices or faulty wiring.
Causes of error and corrective measures
In the following table, you can find the possible error causes and corrective measures for the
"Out of specification" diagnostics status for the field distributor:
DANGER
Observe safety information
If used in a hazardous area, you must observe the safety information in the Product
Information for the DP/PA Coupler, ... (http://support.industry.siemens.com/cs/document/
105657140) Operating Instructions.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
58 Operating Instructions, 05/2015, A5E32591680-AA
Before starting work, disconnect the affected component from the power supply.
Table 7-11 Table 1: "Out of specification" diagnostics status in the "AFDiSD x - (online)" > "Main line" - T1 or T2 dialog
Error Possible causes of error Corrective measures
Voltage values
of the segment
below the set
warning limit
Cable too long (cable resistance to high) Check the configuration of the bus segment with the
SIMATIC Fieldbus Calculator (http://
support.industry.siemens.com/cs/document/
53842953).
Wrong cable Check the cable type (see Cable types in the tech‐
nical specifications of the field distributor in the
Product information for the DP/PA coupler, ... Oper‐
ating Instructions (http://
support.industry.siemens.com/cs/document/
105657140)).
Field distributors or field devices were added to the
end of the bus segment.
Check the configuration of the bus segment with the
SIMATIC Fieldbus Calculator (http://
support.industry.siemens.com/cs/document/
53842953) and remove the superfluous field distrib‐
utors and field devices.
Voltage values
of the segment
above the set
warning limit
Defective coupler Check the coupler of the affected field distributor
and replace it, if necessary.
Current values
of the segment
above the set
warning limit
Too many devices on bus segment Check if too many devices are connected to the bus
segment and remove them.
Check the configuration of the bus segment with the
SIMATIC Fieldbus Calculator (http://
support.industry.siemens.com/cs/document/
53842953).
Unknown device connected to bus segment or faul‐
ty wiring
Check the environment of the field distributor for un‐
known devices on the bus segment (e.g. resistive
load between "+" and "-").
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 59
Table 7-12 Table 2: "Out of specification" diagnostics status in the "AFDiSD x - (online)" > "Main line" - General" dialog
Error Possible causes of error Corrective measures
Mode selector The mode selector of the field distributor was switch‐
ed to the wrong mode during operation.
Check the mode selector switch of the field distrib‐
utor and set it to diagnostics mode (switch position
= "D"), see section Enabling/disabling extended
fieldbus diagnostics at the field distributor
(Page 20).
Signal level too
low
Too many termination resistors on the bus segment Remove unnecessary termination resistors.
Terminal resistance is too high (corrosion, missing
screw)
Check the terminal resistance of the affected field
distributor and, if necessary, of the adjacent field
distributor.
Wrong cable Check the cable type (see Cable types in the tech‐
nical specifications of the field distributor in the
Product information for the DP/PA coupler, ... Oper‐
ating Instructions (http://
support.industry.siemens.com/cs/document/
105657140)).
Cable too long (cable resistance to high) Check the configuration of the bus segment with the
SIMATIC Fieldbus Calculator (http://
support.industry.siemens.com/cs/document/
53842953).
Signal level too
high
Too few termination resistors on the bus segment Check the coupler to determine if the bus terminator
switch is set correctly.
Wrong cable Check the cable type (see Cable types in the tech‐
nical specifications of the field distributor in the
Product information for the DP/PA coupler, ... Oper‐
ating Instructions (http://
support.industry.siemens.com/cs/document/
105657140)).
Field distributor defective Replace the last field distributor on the line.
Capacitive un‐
balance to
ground of all
field distributors
is too low
or
Capacitive un‐
balance to
ground of all
field distributors
is too high
Short-circuit between "-" or "+" main line to shield Check the wiring in the bus segment in question and
the shield connection of the field distributor enclo‐
sure.
Cable is damaged, water has penetrated (can some‐
times result in an error display in "Previous state"
column).
Check the wiring in the affected bus segment for
damage.
Water has penetrated the field distributor. Check the field distributor enclosure for water.
Shield in the coupler is not correctly connected. Check the shield connection of the coupler.
Wrong cable Check the cable type (see Cable types in the tech‐
nical specifications of the field distributor in the
Product information for the DP/PA coupler, ... Oper‐
ating Instructions (http://
support.industry.siemens.com/cs/document/
105657140)).
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
60 Operating Instructions, 05/2015, A5E32591680-AA
Error Possible causes of error Corrective measures
Capacitive un‐
balance to
ground of one or
more of field dis‐
tributors differs
from the other
field distributors.
Shield in the field distributor is not correctly connec‐
ted.
Check the shield connection of the cable between
the field distributors that have a different capacitive
unbalance.
Shield between two field distributors is interrupted. Check the cable between the field distributors that
have a different capacitive unbalance for damage.
Signal noise too
high
Interference on the bus segment Check if there are sources of interference in prox‐
imity to the bus segment.
Insufficient shielding Check the shield connection of the cable in the cou‐
plers.
Check the shield connection of the cable in the field
distributor.
Check the ground connection of the field distribu‐
tors.
Wrong cable Check the cable type (see Cable types in the tech‐
nical specifications of the field distributor in the
Product information for the DP/PA coupler, ... Oper‐
ating Instructions (http://
support.industry.siemens.com/cs/document/
105657140)).
Cable is damaged. Check the cable for damage.
Table 7-13 Table 3: "Out of specification" diagnostics status in the "AFDiSD x - (online)" > "Spur line" - S1 - S6 dialog
Error Possible causes of error Corrective measures
Voltage values
of the spur line
too low
Power consumption of a field device is at the high
limit for the spur line.
Verify that the power consumption of the field device
is within the allowable range of the spur line.
Unknown device connected to the spur line or faulty
wiring
Check the spur line for unknown devices (e.g. re‐
sistive load between "+" and "-").
Voltage values
of the spur line
too high
Field distributor defective Replace the defective field distributor.
Current values
of the spur line
too low
Field device defective Replace the defective field device.
Current values
of the spur line
too high
Power consumption of a field device is at the high
limit for the spur line.
Verify that the power consumption of the field device
is within the allowable range of the spur line.
Unknown device connected to the spur line or faulty
wiring
Check the spur line for unknown devices (e.g. re‐
sistive load between "+" and "-").
See also
Technical specifications (Page 67)
PI amendments for OI DP/PA Link,... (http://support.industry.siemens.com/cs/document/
105657140)
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 61
7.4.4.3 Field distributor: Changing the diagnostics status "Maintenance required"
Requirement
In the "Extended fieldbus diagnostics data" dialog, there is one or more "Maintenance required"
diagnostics states for a field distributor.
Locating field distributors in the plant
SIMATIC PDM provides the "Find AFDiSD x" function for locating field distributors in the plant.
You can find the "Find AFDiSD x" button in the "Device" area of the parameter table of the
"AFDiSD x".
When you click this button, all LEDs of the spur lines to the field devices (S1 to S6) flash for
5 s on the sought-after field distributor.
Procedure
1. In the "Extended fieldbus diagnostics data" dialog, click the "AFDiSD x" button.
Result: The "AFDiSD x - (online)" dialog opens.
2. Select the "Main line" dialog or the "Spur line" dialog.
3. Change the "Maintenance required" diagnostics status for the field distributor using the
following table of possible error causes and corrective measures.
Note
To localize the faults (signal level, capacitive unbalance, signal noise) shown in the "Main line
- General" dialog, you must check all parts of the main line for unknown devices or faulty wiring.
Causes of error and corrective measures
In the following table, you can find the possible error causes and corrective measures for the
"Maintenance required" diagnostics status for the field distributor.
DANGER
Observe safety information
If used in a hazardous area, you must observe the safety information in the Product
Information for the DP/PA Coupler, ... (http://support.industry.siemens.com/cs/document/
105657140) Operating Instructions.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
62 Operating Instructions, 05/2015, A5E32591680-AA
Table 7-14 Table 1: "Maintenance required" diagnostics status in the "AFDiSD x - (online)" > "Main line" - T1 or T2 dialog
Error Possible causes of error Corrective measures
Voltage values of
the segment below
the set warning limit
Additional field distributors or field devices were
added to the bus segment.
Remove the additional devices or save the set
topology again (see step 7 "Manually configuring
the extended fieldbus diagnostics (Page 23)").
Cable length changed when last serviced Save the set topology again (see step 7 "Manually
configuring the extended fieldbus diagnostics
(Page 23)").
Terminal resistance is too high (corrosion, miss‐
ing screw)
Check the terminal resistance of the affected field
distributor and, if necessary, of the adjacent field
distributor.
Voltage values of
the segment above
the set warning limit
Cable length changed when last serviced Save the set topology again (see step 7 "Manually
configuring the extended fieldbus diagnostics
(Page 23)").
Current values of
the segment below
the set warning limit
Current consumption of the field distributors or
field devices has changed. This may indicate im‐
minent failure of the field distributor or field device.
Replace the affected field distributor or field de‐
vice.
Current values of
the segment above
the set warning limit
Additional field distributors or field devices were
added to the bus segment.
Check if additional field distributors or field devi‐
ces were added to the bus segment. Remove
these or save the set topology again (see step 7
"Manually configuring the extended fieldbus diag‐
nostics (Page 23)").
Unknown device connected to bus segment or
faulty wiring
Check the environment of the field distributor for
unknown devices on the bus segment (e.g. resis‐
tive load between "+" and "-").
Current consumption of the field distributors or
field devices has changed. This may indicate im‐
minent failure of the field distributor or field device.
Replace the affected field distributor or field de‐
vice.
Table 7-15 Table 2: "Maintenance required" diagnostics status in the "AFDiSD x - (online)" > "Main line" - General dialog
Error Possible causes of error Corrective measures
Signal level below
the set warning limit
Unnecessary terminating resistors were added to
the bus segment.
Remove unnecessary termination resistors.
Terminal resistance is too high (corrosion, miss‐
ing screw)
Check the terminal resistors.
Cable length changed Save the set topology again (see step 7 "Manually
configuring the extended fieldbus diagnostics
(Page 23)").
Signal level above
the set warning limit
Terminal resistance is too high (corrosion, miss‐
ing screw)
Check the terminal resistors.
Bus terminator switch on coupler disconnected Check the coupler to determine if the bus termi‐
nator switch is set to ON.
Cable length changed Save the set topology again (see step 7 "Manually
configuring the extended fieldbus diagnostics
(Page 23)").
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 63
Error Possible causes of error Corrective measures
Capacitive unbal‐
ance to ground be‐
low the set warning
limit
Short-circuit "-" main line to shield occurred at last
servicing
Check the wiring in the bus segment in question
and the shield connection of the field distributor
enclosure.
Cable is damaged or water has penetrated. Check the wiring in the affected bus segment for
damage.
Water has penetrated the field distributor. Check the field distributor enclosure for water.
Capacitive unbal‐
ance to ground
above the set warn‐
ing limit
Short-circuit "+" main line to shield occurred at last
servicing
Check the wiring in the bus segment in question
and the shield connection of the field distributor
enclosure.
Water has penetrated the cable, "+" main line
damaged.
Check the wiring in the affected bus segment for
damage.
Water has penetrated the field distributor. Check the field distributor enclosure for water.
Signal noise above
the set warning limit
Field distributor or field device is emitting signal
noise on the bus segment. This may indicate im‐
minent failure of the field distributor or field device.
Replace the interfering field distributor or field de‐
vice.
Interference on the bus segment Check if there are sources of interference in prox‐
imity to the bus segment.
Insufficient shielding at last serviced Check the shield connection of the cable in the
couplers.
Check the shield connection of the cable in the
field distributor.
Check the ground connection of the field distribu‐
tors.
Cable is damaged. Check the cable for damage.
Tolerance for measured value deviations when
voltage noise is present is too low.
Increase the allowable tolerance for measured
value deviations when voltage noise is present,
see section Technical specifications (Page 67).
Table 7-16 Table 3: "Maintenance required" diagnostics status in the "AFDiSD x - (online)" > "Spur line" - S1 - S6 dialog
Error Possible causes of error Corrective measures
Voltage values of
the spur line below
the set warning limit
Unknown device at last servicing connected to the
spur line or faulty wiring
Check the spur line for unknown devices (e.g. re‐
sistive load between "+" and "-").
Field device was replaced with wrong device at
last servicing.
Check if a permissible field device is connected
to bus segment.
Voltage values of
the spur line above
the set warning limit
Field device was replaced with wrong device at
last servicing.
Check if a permissible field device is connected
to bus segment.
Current values of
the spur line below
the set warning limit
Current consumption of the field distributors or
field devices has changed. This may indicate im‐
minent failure of the field distributor or field device.
Replace the affected field distributor or field de‐
vice.
Field device was replaced with wrong device at
last servicing.
Check if a permissible field device is connected
to bus segment.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
64 Operating Instructions, 05/2015, A5E32591680-AA
Error Possible causes of error Corrective measures
Current values of
the spur line above
the set warning limit
Current consumption of the field distributors or
field devices has changed. This may indicate im‐
minent failure of the field distributor or field device.
Replace the affected field distributor or field de‐
vice.
Field device was replaced with wrong device at
last servicing.
Check if a permissible field device is connected
to bus segment.
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 65
Alarm, fault and system messages
7.4 Elimination of errors with the extended fieldbus diagnostics
Extended fieldbus diagnostics in PROFIBUS PA
66 Operating Instructions, 05/2015, A5E32591680-AA
Technical specifications 8
Reference
General technical specifications
The statements in the operating instructions DP/PA Coupler, Active Field Distributors, DP/PA
Link and Y Link (http://support.industry.siemens.com/cs/document/1142696) apply in regard
to the general technical specifications.
Technical specifications of components
Also read the supplemental Product Information for the operating instructions DP/PA
Coupler, ... (http://support.industry.siemens.com/cs/document/105657140). There you can
find the technical specifications of the components:
● Interface module (IM 153‑2)
● Coupler (FDC 157)
● Field distributor (AFDiSD)
Note the information in the preface on the scope of validity of this documentation: "Preface
(Page 5)"
Tolerances for measured value deviations for main line and spur line
Table 8-1 Main line
Parameter Fixed alarm limit User-defined
warning limit, de‐
fault setting
Setting range,
user-defined warn‐
ing limit
Trunk Voltage Min 16 V 20 V 16 V – 32 V
Trunk Current Deviation 1000 mA 20 %3) 0 % - 100 %3)
Trunk Signal Voltage Max 2000 mV 1200 mV 500 mV – 2000 mV
Trunk Signal Voltage Min 500 mV 600 mV 500 mV – 2000 mV
Trunk Voltage Noise Max1) 150 mV 50 mV 0 mV – 150 mV
Trunk Unbalance Max 2) 85 %3) 50 %3) 0 % - 85 %3)
Trunk Unbalance Min 2) -85 %3) -50 %3) -85 % - 0 %3)
Trunk Jitter Max (Abs) 5 µs 2.4 µs 0 µs – 5 µs
1) Note possible deviations according to IEC 61158-2.
2) This measurement can be disregarded for line lengths < 20 m. Recommendation: In this case,
increase the warning limit.
3) Deviation from the measured value of commissioning (not from the alarm value)
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 67
Table 8-2 Spur line
Parameter Fixed alarm limit User-defined
warning limit, de‐
fault setting
Setting range,
user-defined warn‐
ing limit
Spur Voltage Min 10 V 11 V 10 V – 15 V
Spur Current Deviation < 5 mA1)
> 37 mA (> 55 mA)
(2)
20 %3) 0 % - 100 %3)
1) A current flow < 5 mA is interpreted as a wire break.
2) The alarm limit > 55 mA is permanently set on the first spur line.
3) Deviation from the measured value of commissioning (not from the alarm value)
Technical specifications
Extended fieldbus diagnostics in PROFIBUS PA
68 Operating Instructions, 05/2015, A5E32591680-AA
Appendix A
A.1 Article numbers
Reference
The statements in the operating instructions DP/PA Coupler, Active Field Distributors, DP/PA
Link and Y Link (http://support.industry.siemens.com/cs/document/1142696) apply in regard
to the accessories for PROFIBUS DP and PROFIBUS PA.
Components of the EFD system
Table A-1 Article numbers for the components of the EFD system
Component Function Article number
EFD-enabled components:
IM 153‑2 Outdoor Interface module 6ES7153‑2BA70‑0XB0
FDC 157 Coupler 6ES7157‑0AC85‑0XA0
AFDiSD Field distributor 6ES7655‑5DX60‑1BB0
Standard components:
BM PS/IM Bus module 6ES7195‑7HA00‑0XA0
BM PS/IM SIPLUS extreme Bus module 6AG1195‑7HA00‑2XA0
BM IM/IM Bus module 6ES7195‑7HD10‑0XA0
BM IM/IM Outdoor Bus module 6ES7195‑7HD80‑0XA0
BM FDC Bus module 6ES7195‑7HF80‑0XA0
BM FDC/FDC (redundant) Bus module 6ES7195‑7HG80‑0XA0
AFS Active field splitter for coupler re‐
dundancy
6ES7157‑0AG80‑0XA0
Installation accessories
Table A-2 Article numbers for installation accessories
Component Article number
Mounting rail for the "module exchange in operation" function
● 482.6 mm
● 530 mm
● 620 mm
● 2000 mm
● 6ES7195‑1GA00‑0XA0
● 6ES7195‑1GF30‑0XA0
● 6ES7195‑1GG30‑0XA0
● 6ES7195‑1GC00‑0XA0
Bus connector for S7 mounting rail (accompanies each coupler) 6ES7390‑0AA00‑0AA0
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 69
Component Article number
Covers (included are 4 backplane bus covers and 1 bus module
cover)
6ES7195‑1JA00‑0XA0
Sealing plugs for unused connections on field distributors (AFDxxx)
● 10 pcs.
● 50 pcs.
● 6ES7157‑0AG80‑1XA1
● 6ES7157‑0AG80‑1XA5
Table A-3 Accessories from WISKA:
Component / thread WISKA type designation WISKA order designation
SPRINT ATEX cable glands
●M 16x1,5 (AFDiSD) ESKE/1-i 16
(old designation: ESKE-i 16)
10103372
(old designation: 10064411)
●M 20x1,5 (AFDiSD) ESKE/1-e 20
(old designation: ESKE-2 20)
10103365
(old designation: 10064402)
●M 16x1,5 (AFD4/8, AFS) ESKE/1-e 16
(old designation: ESKE-e 16)
10103364
(old designation: 10064401)
Screw plugs
●M 16x1,5 EVSG 16 10061831
●M 20x1,5 EVSG 20 10061832
Connection thread gaskets
●M 16x1,5 EADR 16 10062802
●M 20x1,5 EADR 20 10062803
Appendix
A.1 Article numbers
Extended fieldbus diagnostics in PROFIBUS PA
70 Operating Instructions, 05/2015, A5E32591680-AA
A.2 Service & Support
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Siemens Industry Automation and Drive Technologies includes comprehensive services for a
wide range of different users in all sectors of the manufacturing and process industry.
To accompany our products and systems, we offer integrated and structured services that
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The comprehensive online information platform supports you in all aspects of our Service &
Support at any time and from any location in the world.
You can find Online Support on the Internet at the following address: Internet.
Appendix
A.2 Service & Support
Extended fieldbus diagnostics in PROFIBUS PA
Operating Instructions, 05/2015, A5E32591680-AA 71
Technical Consulting
Support in planning and designing your project: From detailed actual-state analysis, definition
of the goal and consultation on product and system questions right through to the creation of
the automation solution.
Technical Support
Expert advice on technical questions with a wide range of demand-optimized services for all
our products and systems.
You can find Technical Support on the Internet at the following address: Internet.
Training
Extend your competitive edge – through practical know-how directly from the manufacturer.
You can find the training courses we offer on the Internet at the following address: Internet.
Engineering Support
Support during project engineering and development with services fine-tuned to your
requirements, from configuration through to implementation of an automation project.
Field Service
Our Field Service offers you services for commissioning and maintenance – to ensure that
your machines and plants are always available.
Spare parts
In every sector worldwide, plants and systems are required to operate with constantly
increasing reliability. We will provide you with the support you need to prevent a standstill from
occurring in the first place: with a worldwide network and optimum logistics chains.
Repairs
Downtimes cause problems in the plant as well as unnecessary costs. We can help you to
reduce both to a minimum – with our worldwide repair facilities.
Optimization
During the service life of machines and plants, there is often a great potential for increasing
productivity or reducing costs.
To help you achieve this potential, we are offering a complete range of optimization services.
Appendix
A.2 Service & Support
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Modernization
You can also rely on our support when it comes to modernization – with comprehensive
services from the planning phase all the way to commissioning.
Service programs
Our service programs are selected service packages for an automation and drives system or
product group. The individual services are coordinated with each other to ensure smooth
coverage of the entire life cycle and support optimum use of your products and systems.
The services of a Service Program can be flexibly adapted at any time and used separately.
Examples of service programs:
● Service contracts
● Plant IT Security Services
● Life Cycle Services for Drive Engineering
● SIMATIC PCS 7 Life Cycle Services
● SINUMERIK Manufacturing Excellence
● SIMATIC Remote Support Services
Advantages at a glance:
● Reduced downtimes for increased productivity
● Optimized maintenance costs due to a tailored scope of services
● Costs that can be calculated and therefore planned
● Service reliability due to guaranteed response times and spare part delivery times
● Customer service personnel will be supported and relieved of additional tasks
● Comprehensive service from a single source, fewer interfaces and greater expertise
Contact
At your service locally, around the globe: your partner for consultation, sales, training, service,
support, spare parts... for the entire range of products supplied by Industry Automation and
Drive Technologies.
You can find your personal contact in our contacts database at: Internet.
Appendix
A.2 Service & Support
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Appendix
A.2 Service & Support
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Glossary
Actual topology
Topology of the EFD system in the plant.
See Set topology.
Actual values from commissioning
See Set topology.
Bus
A common transfer route to which all nodes are connected; it has two defined ends.
Bus connector
Physical connection between bus node and bus line.
Coupler
The Field Device Coupler connects a PROFIBUS PA segment to a PROFIBUS DP segment.
PROFIBUS PA and PROFIBUS DP are coupled to one another in terms of data but are
separate in terms of the transmission physics.
Diagnostic interrupt
Diagnostics-capable components report system errors they have detected to the central CPU
by means of diagnostic interrupts.
In SIMATIC S7: When an error is detected or disappears (e.g. wire break), provided the
interrupt is enabled, the module initiates a diagnostic interrupt. The CPU interrupts the
processing of the user program and lower priority classes and processes the diagnostic
interrupt block (OB 82).
Diagnostics
Diagnostics is the detection, localisation, classification, display and further evaluation of errors,
faults and messages.
Diagnostics provides monitoring functions that run automatically while the plant is in operation.
This increases the availability of plants by reducing commissioning times and downtimes.
DP master
A master that behaves in conformity with IEC 61784-1:2002 Ed1 CP 3/1 is termed a DP
master.
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DP slave
A slave that is operated on the PROFIBUS bus with the PROFIBUS DP protocol and that
behaves in conformity with IEC 61784-1:2002 Ed1 CP 3/1 is termed a DP slave.
DP standard
is the bus protocol of the distributed I/O system in compliance with
IEC 61784-1:2002 Ed1 CP 3/1.
EDD file
Standardized device descriptions (EDD - Electronic Device Description) permit the integration
of intelligent field devices from different manufacturers into different control systems. The IEC
61804-3 standard stipulates the structure of device descriptions. This standard has been
developed in cooperation with the following organizations:
● PROFIBUS International (PI)
● HART Communication Foundation (HCF)
● Fieldbus Foundation
● OPC Foundation
The EDDL (Electronic Device Description Language) is used as basis for the device
descriptions.
EFD
See: Extended fieldbus diagnostics
EFD system
If all components involved in the bus link (interface module, field device coupler, active field
distributors) support extended fieldbus diagnostics (EFD), this configuration is referred to as
an EFD system.
Equipment, associated
A piece of electrical equipment that contains both intrinsically safe and non-intrinsically safe
power circuits and is configured so that the non-intrinsiclly safe power circuits cannot impede
the intrinsicaly safe ones.
Equipment, electrical
Components, power circuits or parts of power circuits that are normally to be found in their
entirety in a single enclosure.
Equipment, intrinsically safe, electrical
A piece of electrical equipment in which all power circuits are intrinsically safe.
Glossary
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Extended fieldbus diagnostics
The extended fieldbus diagnostics allows the configuration and comprehensive diagnostics of
the complete bus segment:
● Interface module
● Field device coupler
● Active field distributors
● Connecting cables between the devices
Field bus
The field bus is a serial bus system for the distributed integration of field devices in an
automation system.
Ground
Ground refers to the entirety of all interconnected inactive parts of equipment that, when
correctly installed, cannot conduct dangerous contact voltage even in the event of a
malfunction.
GSD file
All slave-specific properties are stored in a Device Data Base File (DDBF file). The format of
the DDBF file is to be found in the PROFIBUS guideline: Specification for PROFIBUS Device
Description and Device Integration Vol.1: GSD V4.1, 07/2001 of the PROFIBUS-
Nutzerorganisation (PNO).
Hazardous area (Ex area)
Area in which a potentially explosive gas atmosphere is present or expected in such quantities
that special measures with regard to the design, installation and use of equipment are required.
HW Config
Part of STEP 7 for configuration of hardware.
I&M data (Identification & Maintenance)
Identification data (I data) is information on the module, some of which are printed onto the
module enclosure. I data are for reading only.
Maintenance data (M data) is plant-dependent information such as installation location,
installation date etc. M data are created during configuration and written onto the module.
Glossary
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I&M data is information stored in a module that supports you when
● Checking the plant configuration
● Locating hardware modifications in a plant
● Correcting errors in a plant
Modules can be uniquely identified online by means of the I&M data.
Master
When a master is in possession of the token, it can send data to other nodes and request data
from other nodes (= active node). DP master are, for example, the CPU 315-2 DP or the IM 308-
C.
PNO
PROFIBUS user organization
PROFIBUS
PROcess FIeld BUS, process and field bus standard as defined in the field bus standard
(IEC 61784-1:2002 Ed1 CPF 3 PROFIBUS and PROFINET). It specifies functional, electrical,
and mechanical properties for a bit-serial field bus system.
PROFIBUS is available with the protocols: DP (=distributed I/O) and FMS (= Field bus Message
Specification).
PROFIBUS address
For the purpose of unique identification on PROFIBUS°DP, each node must be given a
PROFIBUS address.
PC / PD or the ET 200 Handheld have the PROFIBUS address "0".
DP master and DP slaves have a PROFIBUS address from the 1 to 125 range.
PROFIBUS DP
PROFIBUS bus system with the DP protocol. DP stands for the German equivalent of
distributed I/O.
PROFIBUS PA
PA stands for Process Automation and increases the range of usage of the PROFIBUS DP
family to include the field of process engineering. Process engineering refers to both the
intrinsically safe sectors of the chemicals industry and to the non-intrinsically safe sectors,
such as nuclear power plant automation, the food industry and waste water technology.
Glossary
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Redundant systems
Redundant systems are characterized by the multiple (redundant) presence of important
automation components. If a redundant component fails there the processing of the program
is not interrupted.
Segment
A segent or bus segment is a self-contained section of a serial bus system.
Set topology
Topology of the EFD system that was stored retentively in the interface module at the time of
commissioning.
The topology of the EFD system essentially comprises the following values:
● Type of redundancy (coupler or ring redundancy)
● Number of couplers
● Number of field distributors
● The spur lines to which field devices are connected
● Actual values determined from the plant at the time of commissioning that are stored
retentively in the interface module as setpoints (e.g., voltage and current)
These values are also transferred to the parameter table in SIMATIC PDM at the time of
commissioning.
After successful commissioning, the setpoints in the parameter table match those stored in
the interface module.
Setpoints from commissioning
See Set topology.
SIMATIC PDM
SIMATIC PDM (Process Device Manager) is a versatile tool for configuring, setting
parameters, commissioning, and diagnostics of intelligent process devices from any vendor.
SIMATIC PDM provides a uniform user interface for the configuration of a wide range of
process devices with a single software package.
Token
In network technology a token refers to a bit pattern that is passed from one bus node to
another, enabling that node to access the bus.
Type of protection
The special measures applied to electrical equipment to prevent the ignition of a potentially
explosive ambient atmosphere.
Glossary
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Glossary
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Index
"
"Activate firmware after download" option, 38
A
AFDiSD
Diagnostics mode, 20
Find, 24
Firmware update, 38
Mode selector, 20
Properties, 13
ALM, 12
Article numbers, 69
Automation License Manager, 12
C
Causes of error, 44
Commissioning status, 26
Components
Article numbers, 69
Replacing a coupler, 32
Replacing a field distributor, 33
Replacing an interface module, 31
Replacing during ongoing operation, 29
Replacing with restart, 30
Configuring
Requirements, 7
Conventions, 8
Corrective measures, 44
Coupler
Replace, 32
Current status, 47
D
Diagnostics dialog
Coupler, 52, 53, 55
Field distributor, 56, 58, 62
Topology, 49, 50, 51
Diagnostics messages, 44
Dimensioning, 15
Disposal, 8
E
EFD system
Maximum configuration, 16
Minimum configuration, 16
Error handling, 44
Extended fieldbus diagnostics
Additional settings, 21
Characteristics, 11
Configuring, 24
Definition, 10
Disabling, 41
EFD system, 9
Enable, 24
How it works, 10
Licensing, 12
PDM license, 12
F
Failure
Coupler, 52
Field distributor, 56
Topology, 49
FDC 157
Properties, 13
Field distributor
Add/remove, 37
Replace, 33
Fieldbus Calculator, 15
I
IM 153-2
Properties, 13
Interface module
Replace, 31
Reset, 18
L
License
For EFD, 12
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M
Maintenance required
Coupler, 55
Field distributor, 62
Topology, 51
Maximum configuration, 16
Minimum configuration, 16
Mode selector
Enable/disable, 20
O
Online Catalog, 8
Out of specification
Coupler, 53
Field distributor, 58
Topology, 50
P
PDM license concept, 12
PDM license for EFD, 12
Previous status, 47
Properties
AFDiSD, 13
FDC 157, 13
IM 153-2, 13
R
Recycling, 8
S
Set topology
Save, 25, 36, 37
SIMATIC Fieldbus Calculator, 15
Status overview of the EFD system, 46
Status signals, 47
System dimensioning, 15
Systems
Dimensioning, 15
Modifying, 37
Index
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