Siemens Industry Online Support
Siemens AG
Entry type: Download Entry ID: 109763750, Entry date: 11/04/2019


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SIRIUS Sim 3SK2, the simulation software for 3SK2 safety relays, for getting to know devices, trying them out, and for offline engineering. SIRIUS and Safety now move on to the next step in digitalization and are well on the way to Industry 4.0

The SIRIUS Sim 3SK2 simulation environment behaves just like the real safety relay, and thus enables applications to be created and tested in the simulator quickly and easily. In this way, you can better familiarize yourself with the devices which will enable you to make an appropriate selection, or you can already create and test parameter settings for subsequent applications. Just as for real devices, the parameters for device response are set in Safety ES. A comprehensive selection of sensors and actuators is available in the simulator for the simulation of applications.

A number of typical ready-made application examples are supplied with the software to help you to get to know the devices. So no additional engineering software is necessary for the first steps.

What features are provided in SIRIUS Sim 3SK2?

Simulation of real device behavior

Testing of already created applications for stand-alone operation

Simple operation and comprehensive selection of sensors and actuators for creating your own applications

Parameterization, commissioning and diagnostics of the simulated device with an interface to Safety ES (Safety ES V1.0 SP3 required)

Simulation of malfunctions of sensors and actuators in order to test whether these faults are detected by the device

Free download

The software is available for downloading free of charge.

Hardware requirements

SIRIUS Sim V1.0 Update 1 supports all common Windows standard PCs. To work efficiently with SIRIUS Sim V1.0 Update 1, please observe the recommended values.

 Operating system Recommended values:
  Processor  RAM Graphics card
MS Windows 7 SP1  
(32 Bit/64 Bit)
2 cores (4 threads)
2.1 GHz
 4GB Full HD 1920x1080
MS Windows 10 
(32 Bit/64 Bit)
 2 cores (4 threads)
2.1 GHz
 4GB Full HD 1920x1080

Further hardware requirements
Hard disk 
Free memory space
>= 100 MB
Internet connectionNot required. However, an Internet connection is recommended in order to use the online update function of
SIRIUS Sim V1.0 Update 1.


Please note that the free disk space values given above assume that the .NET Framework 4.5.2 is already installed on your PC.
If this package is not yet installed on your PC, more free hard disk space is required (see the Microsoft website for .NET Framework system requirements).

Software requirements

Runtime environment

Operating systems

SIRIUS Sim V1.0 Update 1 is a 32-bit application that is approved for use on the following operating systems:

  • Windows 7 SP1 64 Bit (Ultimate/ Professional/ Enterprise Edition)
  • Windows 10 64 Bit
  • Windows 10 Home Version 1703
  • Windows 10 Professional Version 1703
  • Windows 10 Enterprise version 1703

Information regarding the operating systems can be obtained on the Microsoft website.

Third-party software - License conditions and copyright notes

You can find copyright notes for the third-party software contained in this product, particularly Open Source Software, as well as applicable license conditions of such third-party software in the file ReadMe_OSS_V1_Upd1.

Special note for resellers

The notes and the license conditions contained in the file ReadMe_OSS_V1_Upd1 must be passed on to the purchaser in order to avoid the reseller and purchaser violating the licensing conditions.

 Registrierung notwendig  ReadMe_OSS_V1_Upd1.html (89,1 KB)

Installation notes

Please first download the file
"SIRIUS_Sim_V1_Upd1.exe" and execute the file. The file is then unpacked and you can start the setup.

 Registrierung notwendig  Readme_SIRIUSSIM_V1.zip (50,3 KB)   (multiple languages)

Download (also contains OSS source code)

 Registrierung notwendig  SIRIUS_Sim_V1_Upd1.exe (111,1 MB)

SHA-256 checksum:    Registrierung notwendig  Code_SIRIUS_Sim_V1_Upd1.txt (1 KB)
Information on SHA-256: 109483101