Siemens Industry Online Support
Siemens AG
Entry type: Product note Entry ID: 109762596, Entry date: 12/17/2018

Sales and Delivery Release TIM 1531 IRC V2.0.

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The new firmware V2.0 for the product TIM 1531 IRC (6GK7543-1MX00-0XE0) is hereby released for delivery. The TIM 1531 IRC is used as stand-alone device and handles the data transmission via the telecontrol protocol SINAUT ST7, DNP3 or IEC 60870-5-101/104. The firmware is now available for download free of charge. The module is scheduled to be delivered with the new firmware beginning January 2019.


The product TIM 1531 IRC can only be configured as a component of the SIMATIC S7-1500 system with STEP 7 Professional (TIA Portal) as of V14 SP1.

To use the new functions, the product TIM 1531 IRC must be configured with TIA Portal V15.1.


Firmware Version V2.0 

Firmware V2.0 for the product TIM 1531 IRC contains new functions and product improvements concerning general operation of the module in the S7-1500 system. Therefore, performing an upgrade using a free firmware update is generally expedient and recommended.

New functions

  • In addition to the SINAUT ST7 telecontrol protocol, firmware V2.0 of the TIM 1531 IRC now also supports the DNP3 and IEC 60870-5-101/104 telecontrol protocols. The TIM 1531 IRC enables the configuration of up to 3,000 data points as well as buffering up to 250,000 data points / events when using DNP3 or IEC 60870-5-101/104 to avoid loss of data in the event of a communication route disturbance or failure of a communication partner. The module can be operated with the "Station", "Master" or "Node terminal" functions. In addition, the TIM 1531 IRC offers media redundancy by using physically separated connection paths without data loss at switchover.

  • The telecontrol protocol to be used is selected in STEP7 Professional V15.1 (TIA Portal), which is required for configuring the new functions.

  • Static IP routing with up to 1 Mbps is supported between the Ethernet interfaces of the TIM 1531 IRC V2.0.


Security information 

This version contains security-related improvements which improve ruggedness. An update is recommended.

Correction of the SSA-982399: Vulnerabilities in SIMATIC TIM 1531 IRC



Third-party software – license conditions and copyright information 

You can find the copyright notes on the third-party software, especially open source software, as well as applicable license conditions for this type of third-party software in the Readme file. 

Special note for resellers 

The information and the license conditions in the readme file  must be passed on to the purchasing party to avoid license infringements by the reseller or purchasing party. 

  OSS_TIM1531IRC-TI_76.pdf (318.2 KB)

You can download the files here.

Firmware Update V2.0 for TIM 1531 IRC

 Registrierung notwendig  6GK7_543-1MX00-0XE0_V02.00.50_OSS.zip (23.6 MB) 




Security information
In order to protect technical infrastructures, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art IT security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about cyber security, please visit