Siemens SIRIUS 3RW5 series Technical Document

SIRIUS 3RW5 Modbus communication module
Industrial Controls
Soft starters and solid-state
switching devices
SIRIUS 3RW5 Modbus
communication module
Equipment Manual
03/2020
A5E43676481002A/RS
-AC/003
Siemens Industry Online
Support
1
Safety information
2
Description
3
Mounting and dismantling
4
Connecting
5
Configuring
6
Messages and diagnostics
7
Maintenance and service
8
Technical data
9
Dimension drawings
10
Circuit diagrams
11
Appendix
A

Siemens AG
Smart Infrastructure
Control Products
Werner
-von-Siemens-Str. 48-50
92224 AMBERG
GERMANY
A5E43676481002A/RS-AC/003
Ⓟ
03/2020 Subject to change
Copyright © Siemens AG 2018.
All ri
ghts reserved
Legal information
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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.
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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.
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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
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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.

SIRIUS 3RW5 Modbus communication module
Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003 3
Table of contents
1 Siemens Industry Online Support ............................................................................................................ 7
1.1 Support Request .......................................................................................................................9
1.2 Additional documentation .......................................................................................................10
2 Safety information ................................................................................................................................. 13
2.1 Security information ................................................................................................................13
2.2 ESD Guidelines.......................................................................................................................14
2.3 Data security in automation ....................................................................................................16
2.4 Recycling and disposal ...........................................................................................................18
3 Description............................................................................................................................................ 19
3.1 History .....................................................................................................................................21
3.2 Hardware configuration...........................................................................................................22
3.3 Functions of the 3RW5 Modbus communication module .......................................................24
3.3.1 Modbus TCP ...........................................................................................................................24
3.3.2 Modbus RTU ...........................................................................................................................25
3.3.3 Assignment of data to Modbus addresses..............................................................................26
3.4 Connection monitoring ............................................................................................................27
3.5 Telegram structure..................................................................................................................28
3.5.1 Telegram structure Modbus TCP............................................................................................28
3.5.2 Modbus RTU telegram format ................................................................................................29
3.6 Access options for the 3RW5 soft starter ...............................................................................30
3.7 Operating modes and master control function........................................................................32
3.7.1 Operating modes ....................................................................................................................32
3.7.2 Sets the operating mode.........................................................................................................35
3.7.3 Control via digital input............................................................................................................39
3.8 Bus connection cable and bus connector ...............................................................................41
3.8.1 Bus connection cable and bus connector for Modbus TCP ...................................................41
3.8.2 Bus connection cable for Modbus RTU ..................................................................................41
3.9 Accessories.............................................................................................................................42
3.9.1 SIRIUS Soft Starter ES (TIA Portal) .......................................................................................42
3.9.2 Use on the 3RW50 soft starter ...............................................................................................44
4 Mounting and dismantling ..................................................................................................................... 45
4.1 Installing the 3RW5 communication module in the 3RW5 soft starter ...................................45
4.1.1 Break out the cover of the slot ................................................................................................46
4.1.2 Mount the 3RW5 communication module in the slot of the 3RW5 Soft Starter......................48
4.2 Removing the 3RW5 communication module from the 3RW5 soft starter .............................49
4.3 Installing the 3RW5 communication module on a level surface .............................................51
4.4 Removing the 3RW5 communication module from a level surface........................................53

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4Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003
5 Connecting ........................................................................................................................................... 55
5.1 COM connecting cable........................................................................................................... 55
5.1.1 Connecting the COM connecting cable to the 3RW50 soft starter ........................................ 55
5.1.2 Connecting the COM connecting cable to the 3RW5 communication module...................... 57
5.1.3 Removing the COM connecting cable on the 3RW5 communication module ....................... 59
5.1.4 Remove the COM connecting cable on the 3RW50 soft starter............................................ 60
5.2 Fieldbus.................................................................................................................................. 61
5.2.1 3RW5 Modbus TCP communication module ......................................................................... 61
5.2.1.1 Connecting the bus connector ............................................................................................... 61
5.2.1.2 Removing the bus connector ................................................................................................. 63
5.2.2 3RW5 Modbus RTU communication module......................................................................... 64
5.2.2.1 Connecting the bus connection cable.................................................................................... 64
5.2.2.2 Removing the bus connection cable ...................................................................................... 67
6 Configuring ........................................................................................................................................... 69
6.1 Configuring the 3RW5 Soft Starter in the Modbus TCP system............................................ 69
6.2 Configuring the 3RW5 soft starter in the Modbus RTU system............................................. 71
6.3 Configuring the 3RW5 Soft Starter ........................................................................................ 73
6.3.1 Configuring the 3RW5 soft starter in the Modbus TCP system ............................................. 73
6.3.1.1 Configuring 3RW5 soft starters without assistance from a 3RW5 HMI High Feature ........... 73
6.3.1.2 Configuring 3RW5 soft starters with the aid of a 3RW5 HMI High Feature........................... 75
6.3.1.3 IP parameters......................................................................................................................... 77
6.3.2 Configuring the 3RW5 soft starter in the Modbus RTU system............................................. 78
6.3.2.1 Configuring 3RW5 soft starters without help from a 3RW5 HMI ........................................... 78
6.3.2.2 Configuring 3RW5 soft starters with the aid of a 3RW5 HMI................................................. 80
6.3.2.3 Station address ...................................................................................................................... 82
6.3.2.4 Setting station address via 3RW5 HMI Standard .................................................................. 83
6.3.2.5 Port configuration and baud rate............................................................................................ 84
6.3.2.6 Silent interval time.................................................................................................................. 86
6.3.3 Access monitoring time.......................................................................................................... 87
6.4 Operation on failure of the bus connection to the controller .................................................. 88
6.4.1 3RW50 and 3RW52 Soft Starters .......................................................................................... 88
6.4.2 3RW55 and 3RW55 Failsafe Soft Starters ............................................................................ 89
7 Messages and diagnostics .................................................................................................................... 93
7.1 LED display ............................................................................................................................ 94
7.1.1 Device LEDs on the 3RW5 Modbus communication modules .............................................. 94
7.1.2 Status and error displays ....................................................................................................... 95
7.1.2.1 Status and error displays on the 3RW5 Modbus TCP communication module..................... 95
7.1.2.2 Status and error displays on the 3RW5 Modbus RTU communication module .................... 97
7.2 Function Codes ...................................................................................................................... 98
7.2.1 Function Codes 01 (Read Coils) and 02 (Read Discrete Inputs) ........................................ 100
7.2.2 Function Codes 03 (Read Holding Registers) and 04 (Read Input Registers).................... 101
7.2.3 Function Code 05 (Write Single Coil)................................................................................... 103
7.2.4 Function Code 06 (Write Single Register) ........................................................................... 105
7.2.5 Function Code 15 (Write Multiple Coils) .............................................................................. 106
7.2.6 Function Code 16 (Write Multiple Registers) ....................................................................... 108
7.2.7 Function Code 23 (Read/Write Multiple Registers) ............................................................. 110

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SIRIUS 3RW5 Modbus communication module
Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003 5
7.3 Exception Codes...................................................................................................................112
7.3.1 Error Responses ...................................................................................................................112
7.3.2 Supported Exception Codes .................................................................................................113
7.4 Errors and remedial measures on the 3RW5 communication module .................................114
7.5 Messages about the mode ...................................................................................................115
8 Maintenance and service .................................................................................................................... 117
8.1 Firmware update ...................................................................................................................117
8.1.1 Performing firmware update with micro SD card (3RW5 HMI High Feature) .......................119
8.2 Replacing the 3RW5 communication module.......................................................................120
8.3 Restoring factory settings .....................................................................................................122
9 Technical data .................................................................................................................................... 125
9.1 Technical data in Siemens Industry Online Support.............................................................125
10 Dimension drawings............................................................................................................................ 127
10.1 CAx data ...............................................................................................................................127
10.2 Drilling patterns for 3RW5 communication module on the 3RW50 soft starter ....................128
11 Circuit diagrams .................................................................................................................................. 131
11.1 CAx data ...............................................................................................................................131
A Appendix............................................................................................................................................. 133
A.1 Data formats .........................................................................................................................133
A.1.1 Current values as percentages.............................................................................................133
A.1.2 Statistic data .........................................................................................................................134
A.1.3 Maximum pointer ..................................................................................................................135
A.2 Data tables............................................................................................................................136
A.2.1 Byte arrangement .................................................................................................................136
A.2.2 Specifications........................................................................................................................137
A.2.3 Memory image ......................................................................................................................138
A.2.4 Node flash test ......................................................................................................................140
A.2.5 I&M0 - device identification (3RW5 communication module) ...............................................141
A.2.6 I&M0 - device identification (3RW5 soft starter) ...................................................................142
A.2.7 I&M1 - equipment identifier (3RW5 soft starter) ...................................................................143
A.2.8 I&M2 - installation (3RW5 soft starter)..................................................................................144
A.2.9 I&M3 - description (3RW5 soft starter) .................................................................................145
A.2.10 I&M0 - device identification (3RW5 HMI High Feature)........................................................146
A.2.11 Energy management.............................................................................................................147
A.2.12 Process image input (PII) .....................................................................................................148
A.2.13 Process image output (PIQ) .................................................................................................150
A.2.14 Soft starter diagnostics .........................................................................................................152
A.2.15 Measured values...................................................................................................................158
A.2.16 Statistic data .........................................................................................................................160
A.2.17 Maximum pointer ..................................................................................................................162
A.2.18 Parameters ...........................................................................................................................
164
A.2.19 Modbus TCP communication parameters ............................................................................176
A.2.20 Modbus RTU communication parameters ............................................................................177
A.2.21 HMI diagnostics ....................................................................................................................179
A.2.22 HMI parameters ....................................................................................................................180

Table of contents
SIRIUS 3RW5 Modbus communication module
6Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003
Glossary ..............................................................................................................................................181
Index ...................................................................................................................................................183

SIRIUS 3RW5 Modbus communication module
Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003 7
Siemens Industry Online Support
1
Information and service
At Siemens Industry Online Support you can obtain up-to-date information from our global
support database:
●Product support
●Application examples
●Forum
●mySupport
Link: Siemens Industry Online Support (https://support.industry.siemens.com/cs/ww/en/)
Product support
You can find information and comprehensive know-how covering all aspects of your product
here:
●FAQs
Answers to frequently asked questions
●Manuals/operating instructions
Read online or download, available as PDF or individually configurable.
●Certificates
Clearly sorted according to approving authority, type and country.
●Characteristics
For support in planning and configuring your system.
●Product announcements
The latest information and news concerning our products.
●Downloads
Here you will find updates, service packs, HSPs and much more for your product.
●Application examples
Function blocks, background and system descriptions, performance statements,
demonstration systems, and application examples, clearly explained and represented.
●Technical data
Technical product data for support in planning and implementing your project
Link: Product support (https://support.industry.siemens.com/cs/ww/en/ps)

Siemens Industry Online Support
SIRIUS 3RW5 Modbus communication module
8Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003
mySupport
The following functions are available in your personal work area "mySupport":
●Support Request
Search for request number, product or subject
●My filters
With filters, you limit the content of the online support to different focal points.
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compile your own individual newsletter in the "Notifications" section.
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With product lists you can virtually map your control cabinet, your system or your entire
automation project.
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Configure your individual documentation from different manuals.
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Easy access to CAx data, e.g. 3D models, 2D dimension drawings, EPLAN macros,
device circuit diagrams
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Register your Siemens products, systems and software.
Siemens Industry Online Support app
The Siemens Industry Online Support app provides you access to all the device-specific
information available on the Siemens Industry Online Support portal for a particular article
number, such as operating instructions, manuals, data sheets, FAQs etc.
Die Siemens Industry Online Support app is available for Android and iOS:
Android
iOS

Siemens Industry Online Support
1.1 Support Request
SIRIUS 3RW5 Modbus communication module
Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003 9
1.1 Support Request
Use the Support Request online form to send your question directly to Technical Support:
Support Request:
Internet (https://support.industry.siemens.com/My/ww/en/requests)

Siemens Industry Online Support
1.2 Additional documentation
SIRIUS 3RW5 Modbus communication module
10 Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003
1.2 Additional documentation
Manuals / online help
At this point, you will find further manuals and online help that may be of interest to you for
your automation system. They are available to download from the Internet free of charge.
You can create your own individual system documentation in mySupport.
●3RW5 topic page (https://support.industry.siemens.com/cs/ww/en/view/109747404)
●Equipment Manual for the 3RW50 soft starter
(https://support.industry.siemens.com/cs/ww/en/view/109753750)
●Equipment Manual for the 3RW52 soft starter
(https://support.industry.siemens.com/cs/ww/en/view/109753751)
●Equipment Manual for the 3RW55 and 3RW55 Failsafe soft starters
(https://support.industry.siemens.com/cs/ww/en/view/109753752)
●Equipment Manuals for the 3RW5 soft starter
(https://support.industry.siemens.com/cs/ww/en/ps/16212/man)
●Equipment Manual for the 3RW5 Modbus communication modules
(https://support.industry.siemens.com/cs/ww/en/view/109753755)
●Equipment Manual for the 3RW5 PROFINET communication modules
(https://support.industry.siemens.com/cs/ww/en/view/109753754)
●Manual for the 3RW5 PROFIBUS communication module
(https://support.industry.siemens.com/cs/ww/en/view/109753753)
●Equipment Manual for the 3RW5 EtherNet/IP communication module
(https://support.industry.siemens.com/cs/ww/en/view/109758201)
●"System Software for S7-300/400, System and Standard Functions" reference manual
(https://support.industry.siemens.com/cs/ww/en/view/1214574)
●Online help for SIRIUS Soft Starter ES (TIA Portal)
●Online help for STEP 7
●The EMC Directive 2014/30/EU in practice (http://www.siemens.com/emc-guideline)
●Industrial Control Panels and Electronic Equipment of Industrial Machinery for
North America (http://www.siemens.com/UL508A)
●Control Panels compliant with IEC Standards and European Directives
(http://www.siemens.com/iec60204)

Siemens Industry Online Support
1.2 Additional documentation
SIRIUS 3RW5 Modbus communication module
Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003 11
Interesting links
●Manuals in Siemens Industry Online Support
(https://support.industry.siemens.com/cs/ww/en/ps/man)
●FAQs on 3RW5 Soft Starters
(https://support.industry.siemens.com/cs/ww/en/ps/16212/faq)
●Downloads for 3RW5 Soft Starters
(https://support.industry.siemens.com/cs/ww/en/ps/16212/dl)
●Catalog IC 10 (https://support.industry.siemens.com/cs/ww/en/view/109747945)
●Product support for STEP 7 (TIA Portal)
(https://support.industry.siemens.com/cs/ww/en/ps/14672)
●FAQ "How do you program and assign parameters to the Modbus/TCP communication
between S7-1500 CPU and S7-1200 CPU?"
(https://support.industry.siemens.com/cs/ww/en/view/102020340)
●FAQ "How are the memory areas in the SIMATIC S7-1200/S7-1500 and in the Modbus
device addressed during Modbus/TCP data exchange?"
(https://support.industry.siemens.com/cs/ww/en/view/100633819)
●FAQ "Which hardware and software components do you need to establish
communication between SIMATIC S7 stations and third-party devices using the
MODBUS RTU protocol?"
(https://support.industry.siemens.com/cs/ww/en/view/58386780)
●Premium Efficiency - Efficiency class IE3
(http://w3.siemens.com/mcms/topics/en/application-
consulting/ie3ready/Pages/Default.aspx)

Siemens Industry Online Support
1.2 Additional documentation
SIRIUS 3RW5 Modbus communication module
12 Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003

SIRIUS 3RW5 Modbus communication module
Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003 13
Safety information
2
2.1 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 customer’s exposure
to cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security
RSS Feed under
https://www.siemens.com/industrialsecurity

Safety information
2.2 ESD Guidelines
SIRIUS 3RW5 Modbus communication module
14 Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003
2.2 ESD Guidelines
ESD
All electronic devices are equipped with large-scale integrated ICs or components. Due to
their design, these electronic elements are highly sensitive to overvoltage, and thus to any
electrostatic discharge.
The acronym ESD has become the established designation for such electrostatic sensitive
components/devices. This is also the international abbreviation for such devices.
ESD devices are identified by the following symbol:
NOTICE
Electrostatic discharge
ESD devices can be destroyed by voltages well below the threshold of human perception.
These static voltages develop when you touch a component or electrical connection of a
device without having drained the static charges present on your body. The damage
caused to a device by overvoltage is usually not immediately evident and is only noticed
after an extended period of operation.

Safety information
2.2 ESD Guidelines
SIRIUS 3RW5 Modbus communication module
Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003 15
Electrostatic charging
Anyone who is not connected to the electrical potential of their surroundings can be
electrostatically charged.
The diagram below shows the maximum electrostatic voltage which may build up on a
person coming into contact with the materials specified in the diagram. These values
correspond to IEC 801-2 specifications.
Basic protective measures against electrostatic discharge
●Make sure the grounding is good:
When handling electrostatic sensitive devices, ensure that your body, the workplace and
packaging are grounded. In this way, you can avoid becoming electrostatically charged.
●Avoid direct contact:
As a general rule, only touch electrostatic sensitive devices when this is unavoidable
(e.g. during maintenance work). Handle the devices without touching any chip pins or
PCB traces. In this way, the discharged energy cannot reach or damage sensitive
devices.
Discharge your body before taking any necessary measurements on a device. Do so by
touching grounded metallic parts. Use only grounded measuring instruments.

Safety information
2.3 Data security in automation
SIRIUS 3RW5 Modbus communication module
16 Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003
2.3 Data security in automation
The topic of data security and access protection (security) is becoming more and more
important in industrial environments. Increased networking of entire industrial plants, vertical
integration and networking of the levels within a company, and new technologies, such as
remote maintenance, are resulting in more increased requirements for protection of the
industrial plant. Security is the generic term for all protection measures:
●Loss of confidentiality due to unauthorized accessing of data
●Loss of integrity due to data manipulation
●Loss of availability due to destruction of data
To provide protection from manipulation in sensitive plant and production networks, it is not
enough to apply data security solutions for offices to industrial applications without any
adaptation.
Requirements
The special requirements of communication in an industrial environment
(e.g. communication in real time) result in additional requirements for security in industrial
use:
●Protection against interaction between automated cells
●Protection of network segments
●Protection from unauthorized access
●Scalability of the security functionality
●No influence on the network structure.
Threats
Threats can arise from external and internal manipulation. Loss of data security is not always
caused by deliberate actions.
Internal threats arise due to:
●Technical faults
●Operating errors
●Errors in programs
This internal hazards are compounded by external threats. The external hazards do not differ
from the known threats in the office environment:
●Computer viruses and computer worms
●Trojan horses
●Unauthorized access
●Password phishing.
Password phishing means attempting to get a user to divulge access data and passwords by
masquerading as a different identity in an e-mail.

Safety information
2.3 Data security in automation
SIRIUS 3RW5 Modbus communication module
Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003 17
Precautions
The most important precautions against manipulation and loss of data security in an
industrial environment are:
●Filtering and verification of data traffic through virtual private networks (VPN). A virtual
private network is used to exchange private data in a public network (e.g. the Internet).
The most common VPN technology is IPsec. IPsec is a collection of protocols based on
the IP protocol at the network layer.
●Segmentation into protected automation cells. The aim of this concept is to protect
devices in the network through security modules. A group of protected devices forms a
protected automation cell. Only security modules in the same group or the device
protected by you can be interchanged.
●Authentication (identification) of the networked devices. The security modules identify
themselves to each other via a secure (encrypted) channel using authentication
procedures. This prevents access to a protected segment by unauthorized persons from
outside.
●Encryption of the data traffic. The confidentiality of the data is ensured by encrypting the
data traffic. For this purpose, every security module is given a VPN certificate which
includes the encryption key.
VDI guidelines on information security in industrial automation
The VDI/VDE Association of German Engineers "Measurement and Automation" has
published a guideline for implementation of a security architecture in the industrial
environment in the VDI guideline "VDI/VDE 2182 Sheet 1, IT Security for Industrial
Automation - General Model". You will find the guideline under "VDI Standards" on the VDI
home page (https://www.vdi.de/richtlinien).

Safety information
2.4 Recycling and disposal
SIRIUS 3RW5 Modbus communication module
18 Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003
2.4 Recycling and disposal
For environmentally friendly recycling and disposal of your old device, please contact a
company certified for the disposal of old electrical and/or electronic devices and dispose of
the device in accordance with the regulations in your country.

SIRIUS 3RW5 Modbus communication module
Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003 19
Description
3
You can equip SIRIUS soft starters of the 3RW5 series with an optional
3RW5 communication module and therefore also with network functionality. Using the
3RW5 communication module, you integrate the 3RW5 soft starters into the associated
network environment with their complete functionality.
The 3RW5 soft starters can be equipped with a slot for fitting the
3RW5 communication modules. If the 3RW5 soft starter does not feature a slot, install
the 3RW5 communication module next to the 3RW5 soft starter on a level surface,
e.g. a mounting plate.
Preconditions for using the 3RW5 communication modules on the 3RW5 soft starter
Note
3RW5 Modbus TCP communication module
The 3RW5 Modbus
TCP communication module is supported by the following
3RW5 soft starters:
•
3RW50 soft starter1)
•
3RW52 soft starter
•
3RW55 soft starter
•
3RW55 Failsafe soft starter1)
The
3RW5 Modbus TCP communication module is supported by the
3RW5
HMI High Feature.
A histor
y of the firmware versions with new features can be found in the downloads on the
3RW5
topic page (https://support.industry.siemens.com/cs/ww/en/view/109747404).
1)
3RW5 Modbus TCP communication module from firmware version V1.1.
Note
3RW5 Modbus RTU communication module
The 3RW5 Modbus
RTU communication module is supported by the following
3RW5 soft starters:
•
3RW50 soft starter
•
3RW52 soft starter from firmware version V2.0
•
3RW55 soft starter from firmware version V2.0
•
3RW55 soft starter Failsafe
From firmware version
V2.0, the 3RW5 Modbus RTU communi
cation module is supported by
the 3RW5
HMI High Feature.
A history of the firmware vers
ions with new features can be found in the downloads on the
3RW5
topic page (https://support.industry.siemens.com/cs/ww/en/view/109747404).

Description
SIRIUS 3RW5 Modbus communication module
20 Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003
When operating in an automation system:
●Programmable logic controller (PLC), e.g. SIMATIC S7-1500, or a PC as the
Modbus TCP client or Modbus RTU master
●For use with a PLC: PC or programming device with the configuration software of the
controller installed, e.g. STEP 7
●Parameterization software (optional), e.g. SIRIUS Soft Starter ES (TIA Portal) (Page 42)
(only possible via local interface on the 3RW5 HMI High Feature)
Note
Full functional scope
In order to be able to use 3RW5
soft starters without any difficulties and with their full range
of functions, ensure that you have
the latest firmware and software updates:
•
3RW5 soft starter, 3RW5 communication module, 3RW5 HMI High Feature
•
SIRIUS Soft Starter ES (TIA Portal)
You will f
ind current downloads and a history of the versions with new features on the
3RW5
topic page (https://support.industry.siemens.com/cs/ww/en/view/109747404).
Basic knowledge of the following areas:
●General electrical engineering
●Drive technology
●Automation technology
●Handling the automation system and the software used
Target group
The manual is intended for everyone involved in the following tasks:
●Planning and configuring systems
●Installation
●Commissioning
●Service and maintenance