Siemens IM 155-6 PN ST Technical Document

SIMATIC
ET 200SP
IM 155
-6 PN ST interface module
(6ES7155
-6AU01-0BN0)
Equipment Manual
10/2020
A5E03576904
-AE
Preface
Guide
1
Product overview
2
Wiring
3
Parameters/address space
4
Interrupts, diagnostics,
error, and system messages
5
Compatibility
6
Technical specifications
7
Dimension drawing
A

Siemens AG
Digital Industries
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A5E03576904-AE
Ⓟ
11/2020 Subject to change
Copyright © Siemens AG 2012 - 2020.
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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.

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Preface
Purpose of the documentation
This manual supplements the ET 200SP distributed I/O system
(http://support.automation.siemens.com/WW/view/en/58649293) system manual.
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 ET 200SP distributed I/O system.
Conventions
Please also observe notes marked 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.
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 (http://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 visit (http://www.siemens.com/industrialsecurity).

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Table of contents
Preface................................................................................................................................................... 3
1 Guide ..................................................................................................................................................... 5
2 Product overview................................................................................................................................... 9
2.1 Properties............................................................................................................................ 9
2.2 Functions .......................................................................................................................... 12
2.2.1 PROFIenergy...................................................................................................................... 19
2.2.2 Use of fail-safe modules..................................................................................................... 19
2.2.3 Use of technology modules................................................................................................ 19
2.2.4 Configuration control (option handling)............................................................................. 20
3 Wiring .................................................................................................................................................. 21
3.1 Pin assignment .................................................................................................................. 21
3.2 Schematic circuit diagram.................................................................................................. 22
4 Parameters/address space ................................................................................................................... 23
4.1 Parameters ........................................................................................................................ 23
4.2 Explanation of parameters ................................................................................................. 23
4.2.1 Configuration control ........................................................................................................ 23
4.3 Substitute value behavior .................................................................................................. 24
4.4 Status of the supply voltage L+ of the I/O modules ............................................................. 25
5 Interrupts, diagnostics, error, and system messages.......................................................................... 26
5.1 Status and error displays.................................................................................................... 26
5.2 Interrupts .......................................................................................................................... 30
5.2.1 Triggering of a diagnostics interrupt................................................................................... 30
5.2.2 Triggering a hardware interrupt ......................................................................................... 31
5.2.3 Triggering a swapping interrupt......................................................................................... 31
5.3 Alarms............................................................................................................................... 31
5.3.1 Diagnostics alarms............................................................................................................. 31
5.3.2 Maintenance events .......................................................................................................... 32
5.3.3 Channel diagnostics........................................................................................................... 33
5.3.4 Invalid configuration states of the ET 200SP on PROFINET IO .............................................. 37
5.3.5 Failure of supply voltage L+ at BaseUnit BU...D................................................................... 37
5.3.6 STOP of the IO controller and recovery of the IO device ...................................................... 38
6 Compatibility ....................................................................................................................................... 39
7 Technical specifications....................................................................................................................... 41
A Dimension drawing ............................................................................................................................. 45

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Guide
1
The documentation for the SIMATIC ET 200SP 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 ET 200SP distributed I/O system. 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.
General information
The function manuals contain detailed descriptions on general topics regarding the SIMATIC
ET 200SP distributed I/O system, e.g. diagnostics, communication, Web server, motion
control and OPC UA.
You can download the documentation free of charge from the Internet
(http://w3.siemens.com/mcms/industrial-automation-systems-simatic/en/manual-
overview/tech-doc-et200/Pages/Default.aspx).
Changes and supplements to the manuals are documented in a Product Information.

Guide
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6Equipment Manual, 10/2020, A5E03576904-AE
You can download the product information free of charge from the Internet
(https://support.industry.siemens.com/cs/us/en/view/73021864).
Manual Collection ET 200SP
The Manual Collection contains the complete documentation on the SIMATIC ET 200SP
distributed I/O system gathered together in one file.
You can find the Manual Collection on the Internet
(http://support.automation.siemens.com/WW/view/en/84133942).
"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
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.
"mySupport" - CAx data
In the CAx data area of "mySupport", you can access the latest 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).

Guide
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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).
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
TIA Portal.
The SIMATIC Automation Tool provides a multitude of functions:
•Scanning of a PROFINET/Ethernet system network and identification of all connected CPUs
•Address assignment (IP, subnet, gateway) and station name (PROFINET device) to a CPU
•Transfer of the date and the programming device/PC time converted to UTC time to the
module
•Program download to CPU
•RUN/STOP mode switchover
•CPU localization by means of LED flashing
•Reading out of CPU error information
•Reading of the CPU diagnostics buffer
•Reset to factory settings
•Firmware update of the CPU and connected modules
You can find the SIMATIC Automation Tool on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/98161300).

Guide
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PRONETA
SIEMENS PRONETA (PROFINET network analysis) allows you to analyze the plant network
during commissioning. PRONETA features two core functions:
•The topology overview automatically scans the PROFINET and all connected components.
•The IO check is a fast test of the wiring and the module configuration of a plant.
You can find SIEMENS PRONETA on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/67460624).
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 the optimal use of
resources
You can find SINETPLAN on the Internet.
See also
My Documentation Manager
(http://support.industry.siemens.com/My/ww/en/documentation)

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Product overview
2
2.1 Properties
Article number
6ES7155-6AU01-0BN0 (IM 155-6 PN ST interface module and server module)
6ES7155-6AA01-0BN0 (IM 155-6 PN ST interface module with BusAdapter BA 2×RJ45 and
server module)
View of the module
Figure 2-1 View of the IM 155-6 PN ST interface module and the server module
Properties
The module has the following technical properties:
•Connects the ET 200SP distributed I/O system with PROFINET IO
•Power supply 1 L+ 24 V DC (SELV/PELV). The connection plug is included in the scope of
delivery of the interface module.
•PROFINET IO connection via selectable BusAdapter for RJ45 bus connector (BA 2×RJ45),
for standard M12 connector or push-pull connector (BA 2xM12) or for direct connection of
the bus cable (BA 2×FC)
•Use of fail-safe modules
•As of firmware version V 3.0, you can plug a light or a dark BaseUnit into slot 1.

Product overview
2.1 Properties
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
10 Equipment Manual, 10/2020, A5E03576904-AE
The module supports the following functions (Page 12):
Maximum configuration
•32 I/O modules
•512 bytes I/O data
•1 m backplane bus (without interface module)
Accessories
The following accessories can be ordered separately:
•BA 2xRJ45 BusAdapter
•BA 2xFC BusAdapter
•BusAdapter BA 2xM12
•24 V DC connector
•Labeling strips
•Reference identification label
Note
The interface module is also available as a bundle with the BusAdapter BA 2xRJ45 (and the
server module). The article number is 6ES7155-6AA01-0BN0.
A detailed list of the available accessories can be found in the system manual ET 200SP
distributed I/O system (http://support.automation.siemens.com/WW/view/en/58649293).
Server module
The server module is included in the scope of delivery of the interface module and available
separately as an accessory.
The server module has the following properties:
•Terminates the backplane bus of the ET 200SP distributed I/O system
•Features a support for 3 spare fuses (5 × 20 mm)
•Identification data I&M 0 to 3
Note
You need to configure and assign parameters to the server module in the configuration
software.
To do this, place the server module in the last configuration slot and enable the parameter
Group diagnostics: missing supply voltage L+. When there are 32 I/O
modules, the server
module is inserted in slot 33.

Product overview
2.1 Properties
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
Equipment Manual, 10/2020, A5E03576904-AE 11
You can find more information in the Server module
(http://support.automation.siemens.com/WW/view/en/63257531) manual.
First BaseUnit of an ET 200SP in the configuration (as of V3.0)
Note
First BaseUnit of an ET 200SP in the configuration
When an AC I/O module or AI
Energy Meter ST is plugged, the first BaseUnit in an ET 200SP
station may be a dark one. Please note the
information on limiting the overvoltage and
power rating in the AC I/O module manuals.
In order to route the 24
V DC supply voltage via a fuse, a light BaseUnit must be plugged into
the slot of the first 24
V DC I/O module.
Pay attention to the type of the BaseUnits during the configuration.
As of firmware V3.x, the interface modules support plugging dark BaseUnits in slot 1. This
means that modules without a connection to the integrated voltage buses P1 and P2 can now
also be configured starting with slot 1. Currently, this applies to the following modules:
•DI 4x120..230VAC ST (6ES7131-6FD00-0BB1)
•DQ 4x24..230VAC/2A ST (6ES7132-6FD00-0BB1)
Requirement for configuration of these modules in slot 1:
•Configuration via GSD or GSDML
•Configuration as of STEP 7 V5.5 SP4 with
–HSP0241 V2.0 for IM155-6 PN ST
•Configuration as of STEP 7 V13 SP1

Product overview
2.2 Functions
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
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2.2 Functions
Introduction
The interface module supports the following PROFINET IO functions:
•Integrated switch with 2 ports
•Supported Ethernet services: ping, arp, SNMP, LLDP
•Port diagnostics
•Disabling ports
•Isochronous real-time communication
•Minimum update time 1 ms
•Prioritized startup
•Media redundancy (MRP)
•Shared device
•Support of submodules on suitable I/O modules
•Module-internal Shared Input/Shared Output (MSI/MSO)
•Device replacement without PG and without topological configuration
•Reset to factory settings via PROFINET IO
•Firmware update via PROFINET IO
•Station extension via ET-Connection
•The BusAdapter provides the connection system for PROFINET IO. The following versions
are available for the IM 155-6 PN ST interface module:
–For standard RJ45 connector: BA 2×RJ45
–For direct connection of the bus cable: BA 2×FC
–For standard M12 connector or push-pull connector BA 2xM12
The interface module supports additional functions:
•Identification data I&M 0 to 3
•PROFIenergy
•Use of fail-safe modules
•Configuration control (option handling)
•Value status (quality information, QI) of I/O modules
Note
Docking system
Do
not use the IM155-6 PN ST interface module as a docking station. The use as a docking
unit (function: IO devices changing during operation) in a docking system is supported.

Product overview
2.2 Functions
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
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Requirements
The table below shows the software requirements for a configuration with the
IM 155-6 PN ST interface module:
Table 2- 1 Version dependencies of other module functions
Function Product ver-
sion of the
module as of
Firmware ver-
sion of the
module as of
Configuration software
Configuration
with GSD file
(http://support.
automa-
tion.siemens.co
m/WW/view/en/
19698639/1300
00)/software
from a third-
party manufac-
turer
1
STEP 7 as of
V5.5 SP3 with
HSP241
STEP 7
(TIA Portal), as
of V11 SP2
Real-time communication
1
V1.0.0
X
X
X
Isochronous real-time com-
munication
1
V1.0.0
X
X
X
Prioritized startup
1
V1.0.0
X
X
X
Device replacement without
programming device
1
V1.0.0
X
X
X
Media redundancy (MRP)
1
V1.0.0
X
X
X
Shared device
1
V1.0.0
X
X
X (as of V13
SP1)
PROFIenergy
1
V1.0.0
---
X
X
Use of fail-safe modules
1
V1.0.1
X
X
X (as of V13
SP1)
Module-internal Shared In-
put/Shared Output (MSI/MSO)
1
V3.1.0
X
X
X (as of V13
SP1)
Station extension via ET-
Connection
5
V3.1.0
X
X
X (as of V13
SP1)
User data 512 bytes
1
V3.1.0
X
X
X (as of V13
SP1)
Distribution of module chan-
nels to multiple submodules
1
V3.3.0
X
X (as of V5.5
SP4, HSP0241
V3)
X (as of V13
SP1, Update 6)
Interface module;
article number: 6ES7155-
6AU01-0BN0
1
V4.1
X
X (as of V5.5
SP4 HSP241 V4)
X (as of V14
HSP205)
BusAdapter BA 2xMA12
1
V4.2
X
-
X (as of V16
Update 1)
1Systems of third-party manufacturers: Depending on the range of functions of the third-party system

Product overview
2.2 Functions
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
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Note
BusAdapter BA 2xMA12 and firmware 4.1
When using a BA 2xMA12 BusAdapter and firmware 4.1, note that an update to version V4.2
via another BusAdapter must first be performed to make the IM executable.
Cabling with fixed connection setting
If you set a fixed connection setting of the port in STEP 7, you must also disable
"Autonegotiation/Autocrossover".
You can find more information on this topic in the STEP 7 online help and:
•As of STEP 7 V12 in the PROFINET with STEP 7 V13
(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) system manual
Isochronous real-time communication
Synchronized transmission method for cyclic exchange of IRT data between PROFINET
devices. A reserved bandwidth within the send clock is available for IRT data. The reserved
bandwidth ensures that the IRT data is also transmitted in time-synchronized intervals,
unaffected by other high network loading (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 also as a sync master when configuring the IRT
communication.
Otherwise, IRT- and RT-configured IO devices may fail if the sync master fails.
You can find more information on the 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 V13
(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) system manual
Prioritized startup
Prioritized startup is a PROFINET IO function in a PROFINET IO system with IRT and RT
communication. It reduces the time needed for correspondingly configured IO devices to
return to cyclic user data exchange.

Product overview
2.2 Functions
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
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This function accelerates the startup of IO devices in the following cases:
•After recovery of supply voltage
•After station recovery
•After activation of IO devices
Note
Dependency of the startup time
The interface module permits startup times from 0.9
s.
The startup time depends on the number and type of modules.
You can find more information on this topic in the STEP 7 online help and:
•As of STEP 7 V12, in the function manual PROFINET with STEP 7 V13
(http://support.automation.siemens.com/WW/view/en/49948856)
•As of STEP 7 V5.5 in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) system manual
Device replacement
Device replacement without topological configuration
The device name is also stored on the BusAdapter in addition to the interface module. A
device name saved on the BusAdapter is the requirement for device replacement without
topological configuration.
When the interface module is replaced, there is range of scenarios in which the device name
is used.
Table 2- 2 Scenarios for using the device name
Interface module empty Interface module with device
name
BusAdapter empty
No device name available
The device name from the inter-
face module is used and copied
to the BusAdapter.
BusAdapter with device name
The device name from the
BusAdapter is used and copied
to the interface module.
The device name from the
BusAdapter is used and copied
to the interface module if this
has a different device name.
Be aware of the following constraints:
•Resetting to factory settings deletes the device name in both the interface module and the
BusAdapter. To prevent the device name from being deleted in the BusAdapter, you can
remove the BusAdapter from the interface module before resetting to factory settings.
•When a BusAdapter is replaced, a device name stored in the BusAdapter is applied to the
interface module after a POWER ON.
•Do not pull/plug the BusAdapter while under voltage. If you pull/plug the BusAdapter
while under voltage, the interface module restarts.

Product overview
2.2 Functions
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Device replacement with topological configuration
IO devices with this function can be replaced in a simple manner:
•The device name does not have to be assigned with the programming device.
The replacement IO device is assigned the device name by the IO controller and not by the
programming device. The IO controller uses the configured topology and the neighboring
relationships determined by the IO devices for this purpose. All involved devices must support
the LLDP protocol (Link Layer Discovery Protocol). The configured target topology must
match the actual topology.
If the IO devices were already used in another configuration, reset them to factory settings
before reusing them. You can find information on this in the ET 200SP distributed I/O system
(http://support.automation.siemens.com/WW/view/en/58649293) system manual.
You can find more information on this topic in the STEP 7 online help and:
•As of STEP 7 V12 in the PROFINET with STEP 7 V13
(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) system manual
Replacement of an IM 155-6 PN ST
In a replacement scenario, you reset an IO device that is already in operation to the as-
delivered state using "Reset to factory settings". You can find more information in the ET
200SP distributed I/O system
(http://support.automation.siemens.com/WW/view/en/58649293) system 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 more information on this topic in the STEP 7 online help and:
•As of STEP 7 V12, in the function manual PROFINET with STEP 7 V13
(http://support.automation.siemens.com/WW/view/en/49948856)
•As of STEP 7 V5.5 in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) system manual
Shared device
IO device which makes its data available to multiple IO controllers.
The interface module supports shared device at submodule level.

Product overview
2.2 Functions
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
Equipment Manual, 10/2020, A5E03576904-AE 17
If there is no validity check of the shared device projects by the Engineering System,
note the following:
•Make sure the configurations are consistent. Assign each module or submodule to only
one IO controller. Multiple assignment causes errors because the module or submodule is
only available in the first controller.
•If you reconfigure the shared device configurations without the validity check mentioned
above, you must commission ET 200SP again. This means you must download the projects
of all involved IO controllers to the respective CPU again after reconfiguration. If
necessary, perform a POWER OFF/POWER ON of the interface module.
You can find more information on this topic in the STEP 7 online help and:
•As of STEP 7 V12, in the function manual PROFINET with STEP 7 V13
(http://support.automation.siemens.com/WW/view/en/49948856)
•As of STEP 7 V5.5 in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) system manual
Note
In the case of a shared device application, make sure that all controllers work with the same
send clock. If the controller does not have the same send clock, this results in communication
relationships not being set up.
If you set up all controllers in on
e project, the same send clock is ensured. Set the same send
clock for engineering in separate projects.
Submodules
The IM 155-6 PN ST interface module supports the division of I/O modules into up to 4
submodules. This allows parts of an I/O module to be separately configured and
parameterized.
You can assign each of these submodules to different IO controllers.
The following functions are only executed if you have configured submodule 1 during
configuration:
•Firmware update
•Write I&M data
•Calibration
•PROFIenergy

Product overview
2.2 Functions
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
18 Equipment Manual, 10/2020, A5E03576904-AE
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 two IO controllers (for ET 200SP PN ST). 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 two IO controllers. One IO controller has write access. A second IO
controller can have read access to the same channels.
You can find more information on this topic in the STEP 7 online help and:
●As of STEP 7 V12 in the PROFINET with STEP 7 V13
(http://support.automation.siemens.com/WW/view/en/49948856) function manual
Value status
The IM 155-6 PN ST interface module supports I/O modules with value status.
Additional information on the value status can be found in the manuals for the I/O modules.
GSD file
An additional GSD file based on the schema version V2.25 is available for the previous
PROFINET GSD files. This is only to be used when the engineering tool used does not support
GSD files of the current schema version.
These limitations must be taken into account when using the GSD file with the schema
version V2.25 compared to the GSD file of the current schema version:
•Only IM 155-6 PN ST with the firmware version V4.2 can be configured with GSD V2.25.
Only the IM 155-6 PN ST with firmware V4.2 and compatible successors can be used.
•Functionally, there are the following differences:
–No support for S2 system redundancy
–No support of fail-safe modules
–No assignment of hardware interrupts to organization blocks (OB)
–IRT including PerformanceUpgrade is not supported
–PROFIenergy is not supported on module level (can only still be used on IM)
–No support for MRPD, MRT
–No hierarchical display in the parameter masks
–No configuration check with automatic device naming with topological configuration
–StartupMode: No AdvancedStartup, only the Legacy Mode is supported.