Siemens simatic ET 200MP User manual

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SIMATIC
ET 200MP
IM 155-5 PN HF Interface Module
(6ES7155-5AA00-0AC0)
Manual
10/2018
A5E32840985
-AB
Preface
Guide to documentation
1
Product overview
2
Wiring
3
Parameter
4
Interrupts and diagnostic,
error, and system alarms
5
Technical specifications
6
Dimension drawing
A
Response times
B

Siemens AG
Division Digital Factory
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E32840985-AB
Ⓟ
10/2018 Subject to change
Copyright © Siemens AG 2014 - 2018.
All rights reserved
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
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
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.

IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
Manual, 10/2018, A5E32840985-AB 3
Preface
Purpose of the documentation
This manual supplements the system manual S7-1500, ET 200MP Automation system
(https://support.industry.siemens.com/cs/ww/en/view/59191792). Functions that generally
relate to the system are described in this manual.
The information provided in this manual and in the system/function manuals supports you in
commissioning the system.
Conventions
Please also observe notes labeled as follows:
Note
A note contains important information on the product described in the documentation, on the
handling of the product, or on the section of the documentation to which particular attention
should be paid.
Recycling and disposal
For environmentally friendly recycling and disposal of your old equipment, contact a certified
electronic waste disposal company and dispose of the equipment according to the applicable
regulations in your country.

Preface
IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
4Manual, 10/2018, A5E32840985-AB
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens' products and solutions constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems,
machines and networks. Such systems, machines and components should only be
connected to an enterprise network or the internet if and to the extent such a connection is
necessary and only when appropriate security measures (e.g. firewalls and/or network
segmentation) are in place.
For additional information on industrial security measures that may be implemented, please
visit (https://www.siemens.com/industrialsecurity).
Siemens' products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends that product updates are applied as soon as they are
available and that the latest product versions are used. Use of product versions that are no
longer supported, and failure to apply the latest updates may increase customers' exposure
to cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed under (https://www.siemens.com/industrialsecurity).

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Manual, 10/2018, A5E32840985-AB 5
Table of contents
Preface ................................................................................................................................................... 3
1 Guide to documentation .......................................................................................................................... 7
2 Product overview .................................................................................................................................. 12
2.1 Properties................................................................................................................................12
2.2 Functions ................................................................................................................................14
2.2.1 PROFINET IO .........................................................................................................................14
2.2.2 Configuration control (option handling)...................................................................................20
2.2.3 System redundancy on S7-400H............................................................................................20
3 Wiring ................................................................................................................................................... 21
3.1 Pin assignment .......................................................................................................................21
3.2 Block diagram .........................................................................................................................22
4 Parameter............................................................................................................................................. 23
4.1 Parameters .............................................................................................................................23
4.2 Description of parameters.......................................................................................................23
4.2.1 Connection to supply voltage L+ ............................................................................................23
4.2.2 Configuration control (option handling)...................................................................................24
4.3 Configuration control (option handling)...................................................................................25
4.3.1 Configuration control and control data record ........................................................................25
4.3.2 Feedback data record .............................................................................................................29
4.3.3 Configure configuration control without empty slots ...............................................................30
4.3.4 Extending the configuration ....................................................................................................32
4.3.5 Combining configurations .......................................................................................................34
5 Interrupts and diagnostic, error, and system alarms............................................................................... 36
5.1 Status and error displays ........................................................................................................36
5.2 Interrupts.................................................................................................................................38
5.2.1 Triggering of a diagnostic interrupt .........................................................................................39
5.2.2 Triggering of a hardware interrupt ..........................................................................................40
5.3 Alarms.....................................................................................................................................41
5.3.1 Diagnostic alarms ...................................................................................................................41
5.3.2 Maintenance events................................................................................................................42
5.3.3 Channel diagnostics................................................................................................................43
5.3.4 Invalid configuration states of the ET 200MP on PROFINET IO............................................47
5.3.5 STOP of the IO controller and recovery of the IO device .......................................................48
6 Technical specifications ........................................................................................................................ 49
A Dimension drawing ............................................................................................................................... 53
B Response times .................................................................................................................................... 55
B.1 Response times of the ET 200MP ..........................................................................................55

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Guide to documentation
1
The documentation for the SIMATIC S7-1500 automation system and the SIMATIC
ET 200MP distributed I/O system is arranged into three areas.
This arrangement enables you to access the specific content you require.
Basic information
The System Manual and Getting Started describe in detail the configuration, installation,
wiring and commissioning of the SIMATIC S7-1500 and ET 200MP systems. The STEP 7
online help supports you in the configuration and programming.
Device information
Product manuals contain a compact description of the module-specific information, such as
properties, wiring diagrams, characteristics and technical specifications.

Guide to documentation
IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
8Manual, 10/2018, A5E32840985-AB
General information
The function manuals contain detailed descriptions on general topics regarding the SIMATIC
S7-1500 and ET 200MP systems, e.g. diagnostics, communication, motion control, Web
server, OPC UA.
You can download the documentation free of charge from the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109742691).
Changes and supplements to the manuals are documented in a Product Information.
You can download the product information free of charge from the Internet
(https://support.industry.siemens.com/cs/us/en/view/68052815).
Manual Collection S7-1500/ET 200MP
The Manual Collection contains the complete documentation on the SIMATIC S7-1500
automation system and the ET 200MP distributed I/O system gathered together in one file.
You can find the Manual Collection on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/86140384).
SIMATIC S7-1500 comparison list for programming languages
The comparison list contains an overview of which instructions and functions you can use for
which controller families.
You can find the comparison list on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/86630375).
"mySupport"
With "mySupport", your personal workspace, you make the best out of your Industry Online
Support.
In "mySupport", you can save filters, favorites and tags, request CAx data and compile your
personal library in the Documentation area. In addition, your data is already filled out in
support requests and you can get an overview of your current requests at any time.
You must register once to use the full functionality of "mySupport".
You can find "mySupport" on the Internet (https://support.industry.siemens.com/My/ww/en).
"mySupport" - Documentation
In the Documentation area in "mySupport" you can combine entire manuals or only parts of
these to your own manual.
You can export the manual as PDF file or in a format that can be edited later.
You can find "mySupport" - Documentation on the Internet
(http://support.industry.siemens.com/My/ww/en/documentation).

Guide to documentation
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"mySupport" - CAx data
In the CAx data area in "mySupport", you can access the current product data for your CAx
or CAe system.
You configure your own download package with a few clicks.
In doing so you can select:
●Product images, 2D dimension drawings, 3D models, internal circuit diagrams, EPLAN
macro files
●Manuals, characteristics, operating manuals, certificates
●Product master data
You can find "mySupport" - CAx data on the Internet
(http://support.industry.siemens.com/my/ww/en/CAxOnline).
Application examples
The application examples support you with various tools and examples for solving your
automation tasks. Solutions are shown in interplay with multiple components in the system -
separated from the focus on individual products.
You will find the application examples on the Internet
(https://support.industry.siemens.com/sc/ww/en/sc/2054).
TIA Selection Tool
With the TIA Selection Tool, you can select, configure and order devices for Totally
Integrated Automation (TIA).
This tool is the successor of the SIMATIC Selection Tool and combines the known
configurators for automation technology into one tool.
With the TIA Selection Tool, you can generate a complete order list from your product
selection or product configuration.
You can find the TIA Selection Tool on the Internet
(http://w3.siemens.com/mcms/topics/en/simatic/tia-selection-tool).

Guide to documentation
IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
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SIMATIC Automation Tool
You can use the SIMATIC Automation Tool to perform commissioning and maintenance
activities simultaneously on various SIMATIC S7 stations as a bulk operation independent of
the TIA Portal.
General function overview:
●Network browsing and creation of a table showing the accessible devices in the network.
●Flashing of device LEDs or HMI display to locate a device
●Downloading of addresses (IP, subnet, gateway) to a device
●Downloading the PROFINET name (station name) to a device
●Placing a CPU in RUN or STOP mode
●Setting the time in a CPU to the current time of your PG/PC
●Downloading a new program to a CPU or an HMI device
●Downloading from CPU, downloading to CPU or deleting recipe data from a CPU
●Downloading from CPU or deleting data log data from a CPU
●Backup/restore of data from/to a backup file for CPUs and HMI devices
●Downloading service data from a CPU
●Reading the diagnostics buffer of a CPU
●Performing a CPU memory reset
●Resetting devices to factory settings
●Downloading a firmware update to a device
You can find the SIMATIC Automation Tool on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/98161300).
PRONETA
With SIEMENS PRONETA (PROFINET network analysis), you analyze the PROFINET
network during commissioning. PRONETA features two core functions:
●The topology overview independently scans PROFINET network and all connected
components.
●The IO check is a fast test of the wiring and the module configuration of a system.
You can find SIEMENS PRONETA on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/67460624).

Guide to documentation
IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
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SINETPLAN
SINETPLAN, the Siemens Network Planner, supports you in planning automation systems
and networks based on PROFINET. The tool facilitates professional and predictive
dimensioning of your PROFINET installation as early as in the planning stage. In addition,
SINETPLAN supports you during network optimization and helps you to exploit network
resources optimally and to plan reserves. This helps to prevent problems in commissioning
or failures during productive operation even in advance of a planned operation. This
increases the availability of the production plant and helps improve operational safety.
The advantages at a glance
●Network optimization thanks to port-specific calculation of the network load
●Increased production availability thanks to online scan and verification of existing systems
●Transparency before commissioning through importing and simulation of existing STEP 7
projects
●Efficiency through securing existing investments in the long term and optimal exploitation
of resources
You can find SINETPLAN on the Internet (https://www.siemens.com/sinetplan).

IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
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Product overview
2
2.1
Properties
Order number
6ES7155-5AA00-0AC0
View of the module
Figure 2-1 View of the IM 155-5 PN HF interface module
Properties
●Technical properties
–Connects the ET 200MP distributed I/O system with PROFINET IO
–24 VDC supply voltage (SELV/PELV)
–PROFINET IO connection using RJ45 bus connector
●Supported functions (Page 14)

Product overview
2.1 Properties
IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
Manual, 10/2018, A5E32840985-AB 13
Maximum configuration
●512 bytes I/O data per station
●The integrated power supply of the interface module feeds 14 W into the backplane bus.
Up to 12 I/O modules can be supplied with this. The exact number of operable modules is
determined by the power budget (see relevant section in the system manual S7-1500,
ET 200MP Automation system
(https://support.industry.siemens.com/cs/ww/en/view/59191792)).
●A maximum of one power supply module (PS) upstream from the interface module and
two downstream from the interface module is possible.
●If you use a power supply module (PS) upstream from the interface module, the
maximum possible configuration is a total of 32 modules (up to 30 modules downstream
from the interface module).

Product overview
2.2 Functions
IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
14 Manual, 10/2018, A5E32840985-AB
2.2
Functions
2.2.1
PROFINET IO
Introduction
The interface module supports the following PROFINET IO functions:
●Integrated switch with 2 ports
●Supported Ethernet services: ping, arp, SNMP, LLDP
●Port diagnostics
●Deactivating ports
●Isochronous real-time communication (IRT)
●Minimum update time 250 μs
●Prioritized startup
●Device replacement without PG
●Media redundancy (MRP)
●Media redundancy with planned duplication (MRPD)
●Shared Device with up to four IO controllers
●Module-internal Shared Input/Shared Output (MSI/MSO)
●Isochronous mode of process data
●Identification data I&M 0 to 3
●Firmware update via PROFINET IO
●Reset to factory settings via PROFINET IO
●Configuration control (option handling)
●System redundancy on S7-400H
●System redundancy S2
●IO devices changing during operation ("alternative partners")
–Docking station

Product overview
2.2 Functions
IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
Manual, 10/2018, A5E32840985-AB 15
Requirements
The table below shows the software requirements for a configuration with the
IM 155-5 PN HF interface module:
Table 2- 1 Requirements
PROFINET IO function
Configuration software
with GSD file1)
STEP 7 (TIA Portal) V13 or
higher
STEP 7 V5.5 SP3 or higher
STEP 7 (TIA Portal) V13 or
higher
Real-time communication
X
X
X
Isochronous real-time com-
munication (IRT)
X X X
Prioritized startup
X
X
X
Device replacement without
PG
X X X
Media redundancy (MRP)
X
X
X
Media redundancy with
planned duplication (MRPD)
X X -
Shared Device
•with up to two IO control-
lers
•with up to four IO control-
lers
X
-
X2)
X2)
-
-
Isochronous mode
-
-
X
System redundancy on
S7-400H
X - -
System redundancy S2
X
-
As of V15.1
IO devices changing during
operation ("alternative part-
ners")
•Docking station
As of V5.6 As of V15.1 As of V15.1
1)
The usability of the PROFINET IO functions depends on the configuration software (Siemens and/or third party). Below,
the usability of the PROFINET IO functions is described for STEP 7 only.
2) No validity check of Shared Device projects

Product overview
2.2 Functions
IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
16 Manual, 10/2018, A5E32840985-AB
Isochronous real-time communication
Synchronized transmission method for cyclic exchange of IRT data between PROFINET
devices. A reserved bandwidth is available in the send cycle for IRT data. The reserved
bandwidth ensures that IRT data can be transferred at reserved synchronized intervals,
without being influenced by other network loads (e.g., TCP/IP communication, or additional
real-time communication).
A topological configuration is required for IRT.
Note
IO controller as sync master with IRT communication
We recommend operating the IO controller as sync master when configuring IRT
communication.
Otherwise, IO devices with IRT and RT configuration could fail as a result of sync master
failure.
You can find additional information on configuration of synchronized PROFINET devices in
sync domains in the STEP 7 online help and
●As of STEP 7 V12, in the PROFINET with STEP 7
(http://support.automation.siemens.com/WW/view/en/49948856) function manual
●As of STEP 7 V5.5, in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) manual
Prioritized startup
Prioritized startup denotes the PROFINET functionality for accelerating the startup of IO
devices operated in a PROFINET IO system with RT communication.
The function reduces the time that the correspondingly configured IO devices require to
return to the cyclic user data exchange in the following cases:
●After the supply voltage has returned
●After a station has returned
●After activation of IO devices
Note
Dependency of the startup time
The startup time depends on the number and type of modules. You can
optimize the
startup time by
•
Inserting no more than 12 I/O modules
•
Inserting no power supply module.
The prioritized startup function with the requirements listed in the note above is not available
for IRT communication and media redundancy.

Product overview
2.2 Functions
IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
Manual, 10/2018, A5E32840985-AB 17
You can find additional information in the STEP 7 online help and
●As of STEP 7 V12, in the PROFINET with STEP 7
(http://support.automation.siemens.com/WW/view/en/49948856) function manual
●As of STEP 7 V5.5, in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) manual
Cabling with fixed connection setting
If you set a fixed connection setting of the port in STEP 7, you should also deactivate
"Autonegotiation/Autocrossover".
You can find additional information in the STEP 7 online help and
●As of STEP 7 V12, in the PROFINET with STEP 7
(http://support.automation.siemens.com/WW/view/en/49948856) function manual
●As of STEP 7 V5.5, in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) manual
Device replacement without PG
It is easy to replace IO devices that support this function:
●The device name does not have to be assigned with the PG.
The replaced IO device is assigned the device name by the IO controller. The IO controller
uses the configured topology and the neighbor relationships determined by the IO devices
for this purpose. All involved devices must support the LLDP protocol (Link Layer Discovery
Protocol). The configured preset topology must match the actual topology.
IO devices that have been used in another configuration must be reset to the factory settings
before they can be used again (see system manual S7-1500, ET 200MP Automation system
(https://support.industry.siemens.com/cs/ww/en/view/59191792)).
You can find additional information in the STEP 7 online help and
●As of STEP 7 V12, in the PROFINET with STEP 7
(http://support.automation.siemens.com/WW/view/en/49948856) function manual
●As of STEP 7 V5.5, in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) manual
Media redundancy (MRP)
Function for safeguarding communication and plant availability. A ring topology ensures that
an alternative communication path is made available if a transmission route fails.
You can find additional information in the STEP 7 online help and
●As of STEP 7 V12, in the PROFINET with STEP 7
(http://support.automation.siemens.com/WW/view/en/49948856) function manual
●As of STEP 7 V5.5, in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) manual

Product overview
2.2 Functions
IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
18 Manual, 10/2018, A5E32840985-AB
Media redundancy with planned duplication (MRPD)
If media redundancy is to be achieved in the case of short update times (together with IRT),
you must use the MRP extension "Media redundancy with planned duplication (MRPD)".
You can find additional information in the STEP 7 online help and
●As of STEP 7 V12, in the PROFINET with STEP 7
(http://support.automation.siemens.com/WW/view/en/49948856) function manual
●As of STEP 7 V5.5, in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) manual
Shared Device
IO device that makes its data available to up to four IO controllers.
The interface module supports Shared Device operation at the submodule level. A
prerequisite for using this function is that the I/O modules also support this.
Please note the following if
the Engineering System does not perform a validity check of the
Shared Device projects
:
●Make sure that the configurations are consistent. In particular, the modules or
submodules may only be assigned to one controller. Multiple assignment will result in an
error; the module will only be available in the first controller.
●If you reconfigure Shared Device configurations without the validity check mentioned
above, you have to commission the ET 200MP once again. This means that you have to
reload the projects of all involved IO controllers to the specific CPU after reconfiguration
and, if necessary, switch the interface module POWER OFF/POWER ON.
You can find additional information in the STEP 7 online help and
●As of STEP 7 V12, in the PROFINET with STEP 7
(http://support.automation.siemens.com/WW/view/en/49948856) function manual
●As of STEP 7 V5.5, in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) manual
Module-internal Shared Input/Shared Output (MSI/MSO)
The module-internal Shared Input function allows an input module to make its input data
available to up to four IO controllers. Each controller has read access to the same channels.
The module-internal Shared Output function allows an output module to make its output data
available to up to four IO controllers. One IO controller has write access. Up to three
additional IO controllers can have read access to the same channels.
The combination of isochronous mode and Shared Device is not supported.
You can find additional information in the STEP 7 online help and
●As of STEP 7 V12, in the PROFINET with STEP 7
(http://support.automation.siemens.com/WW/view/en/49948856) function manual

Product overview
2.2 Functions
IM 155-5 PN HF Interface Module (6ES7155-5AA00-0AC0)
Manual, 10/2018, A5E32840985-AB 19
Isochronous mode of process data
The process data, transmission cycles via PROFINET IO, and the user program are
synchronized to achieve maximum deterministics. The input data and output data of
distributed I/O devices in the plant are detected and output simultaneously. The isochronous
PROFINET IO cycle forms the clock generator for this.
You can find additional information in the STEP 7 online help and
●As of STEP 7 V12, in the PROFINET with STEP 7
(http://support.automation.siemens.com/WW/view/en/49948856) function manual
System redundancy S2
An IO device with S2 system redundancy supports redundant ARs.
In a redundant system, an IO device with system redundancy S2 has a redundant AR for
each of the two CPUs (IO controllers). If one CPU fails, the IO device with S2 system
redundancy remains accessible to the remaining IO controller via the AR.
The interface module supports system redundancy S2 on S7-400H CPUs and on S7-
1500R/H CPUs.
You can find additional information in the STEP 7 online help and
●As of STEP 7 V12, in the PROFINET with STEP 7
(http://support.automation.siemens.com/WW/view/en/49948856) function manual
IO devices changing during operation ("alternative partners") - docking station
You can use the PROFINET functionality "IO devices changing during operation"
("alternative partners"), e.g. for tool change for robots. Typical tools include:
●Welding guns
●Positioning tools for manufacturing parts
You can find additional information in the STEP 7 online help and
●As of STEP 7 V12, in the PROFINET with STEP 7
(http://support.automation.siemens.com/WW/view/en/49948856) function manual

Product overview
2.2 Functions
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20 Manual, 10/2018, A5E32840985-AB
2.2.2
Configuration control (option handling)
Properties
Configuration control allows you to prepare your distributed I/O system for future extensions
or changes. Configuration control means that you can configure the planned maximum
configuration of your distributed I/O system in advance and vary it later in a flexible manner
by means of the user program.
Reference
You can find more information
●In chapter Configuration control (option handling) (Page 25)
●On the Internet (http://support.automation.siemens.com/WW/view/en/29430270)
●In the STEP 7 online help.
2.2.3
System redundancy on S7-400H
Interface to H-CPUs with system redundancy
When system redundancy is used, you can connect the IM 155-5 PN HF
(6ES7155-5AA00-0AC0) interface module to CPUs 41x-5H PN/DP (version 6.0 or higher) of
the S7-400.
These CPUs allow you to operate the interface module as a component of a redundant
system.
Requirements for the IM 155-5 PN HF interface module:
●With STEP 7 V5.5 SP3 and higher, the IM 155-5 PN HF is configured as a system
redundancy device.
●The connection setting (transmission medium/duplex) must be set to "Full duplex".
Examples of system redundancy can be found in the manual Fault-tolerant systems
S7-400H (http://support.automation.siemens.com/WW/view/en/60458386).
Combination of system redundancy and Shared Device
The IM 155-5 PN HF interface module can be connected to up to four IO controllers but only
to one H-CPU pair. As a result, a combination of system redundancy and Shared Device
operation is not possible when redundancy operation is used exclusively.
However, you can operate some of the I/O modules of the interface module in system
redundancy on the H-CPU pair and the other I/O modules with up to two additional IO
controllers in Shared Device operation.