SIMATIC communication library for Linux


We bring communication capability to IT islands in an industrial LINUX environment - with SOFTBUS S7 Linux. This add-on lets you communicate with SIMATIC S7 or S5 - or even across different computers and operating systems – thanks to a simple, standardized interface with just six calls. SOFTBUS Linux is available in four variants:

  • SOFTBUS Linux (TCP) - Article No. 2XV9450-1CG0

  • SOFTBUS Linux red (TCP) - Article No.2XV9450-1CG02

  • SOFTBUS Linux (ISO) -  Article No.2XV9450-1CG10

  • SOFTBUS Linux red (ISO) - Article No.2XV9450-1CG04

A C/C++/JAVA application programmer interface is offered to users. The resulting virtual bus allows all nodes to exchange data consistently across different platforms - regardless of the underlying network protocol.

Area of application

One of the most daunting challenges confronting information technology entails filtering heterogeneous data out of a production facility, processing and delivering it promptly to the relevant decision makers. Therefore classic ERP systems have to be connected to MES systems and devices at the automation level.

In many companies the production areas have yet to be fully integrated into the corporate LAN. Legacy landscapes with different hardware and software platforms frequently limit the possibilities for crosssystem information exchange - leading to the development of IT islands. Consistent connection of the LINUX systems that are increasingly installed in these areas to the industrial communications network is vital.


  • Easy integration of applications into existing software

  • Automatic handling of temporary errors in communication

  • Failsafe communication down to application level

  • Scalable redundancy

  • Secured transaction transmission to the database

  • Defined restart after a system failure

  • No lost or duplicate jobs

Design and functions

The Ethernet ports included in the PC are used as communication interface - separate hardware investments are not necessary.

Application protocols SOFTBUS Linux



  • APRED (red variants only)

Transport protocols

  • ISO

  • ISO on TCP (RC1006)

Older SIMATIC S5 and S7 systems can thus be connected to a LINUX PC without any problems.