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.

Features

  • 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

Project Samples

Project Activity

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License

GNU Library or Lesser General Public License version 3.0 (LGPLv3)

Follow Snap7

Snap7 Web Site

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User Ratings

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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 4 / 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

User Reviews

  • Reliable and easy library
  • Excellent work. Thank you.
  • Thank u for two data flow models, it makes the Snap7 essential.
    2 users found this review helpful.
  • Un progetto ben sviluppato dalla A alla Z. Semplice da usare ma potentissimo! Complimenti
    1 user found this review helpful.
  • Veramente un lavoro straordinario. Complimenti Davide! La mia esigenza era solo quella di avere uno strumento per leggere e scrivere dei registri. Inoltre ero alla ricerca di un simulatore di Siemens S7. Quando ho iniziato a guardare gli esempi e la documentazione ho capito il grande lavoro dietro questo progetto. Ho trovato molto utili i programmi serverdemo.exe e clientdemo.exe che mi hanno dato la possibilità di fare rapidamente dei test. Le librerie sono molto semplici da integrare.
    3 users found this review helpful.
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