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32/64 bit multi-platform Ethernet S7 PLC communication suite

5.0 Stars (19)
903 Downloads (This Week)
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Snap7, through three specialized components: Client and the inedited Server and Partner, allows you to definitively integrate your PC based systems into a PLC automation chain.

Designed to transfer large amounts of hi-speed data in industrial facilities, it scales easily, down to small Linux Arm boards such as Raspberry PI.

Hi level object oriented wrappers are provided, currently C/C++, .NET/Mono, Pascal, LabVIEW, Python with many source code examples.

Very easy to use, a full working server example is not bigger than the “Hello world”.

Many projects/makefiles are ready to run to easily rebuild Snap7 in any platform without the need of be a C++ guru.

Very detailed documentation provided.

Snap7 Web Site


  • Native multi-architecture design (32/64 bit).
  • Runtime endian-aware architecture (no compiler switch needed)
  • Three different native thread models for performance optimization: Win32/Posix/Solaris
  • Two data transfer models: classic synchronous and asynchronous.
  • Two data flow models: polling and unsolicited (PLC transfers data when it wants to).
  • No dependence on any third-party libraries, no installation needed, zero configuration.
  • Supported : S7 300/400/1200/1500/WinAC, LOGO 0BA7/0BA8, S7200, SINAMICS
  • Set/Clear password functions to full access to protected PLC


User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
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Additional Project Details



Intended Audience

Manufacturing, Developers, Engineering

User Interface

Other toolkit

Programming Language

C#, Python, C++, C, Delphi/Kylix, LabVIEW



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