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Arduino Ethernet library for communicating with S7 Siemens PLC

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Small but efficient communication library that allows your sketches the interfacing with Siemens PLC.
Works starting from Arduino UNO with the W5100 ethernet shield.

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  • S7 200/300/400/1200/1500, WinAC, LOGO 0BA7 are managed.
  • Full PLC memory access (E/A/M/DB/T/Z)
  • PDU independence :large data transfer in a single call (depending only on the Arduino memory)
  • Helper functions for data conversion (Big Endian --> Little endian)
  • Three memory models for footprint optimization.
  • Uses standard Arduino Ethernet library i.e. it can coexist with other clients/servers.
  • 3 ms to read a PDU into the internal buffer, 24 ms for 1024 bytes into the external.

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Additional Project Details



Intended Audience

Advanced End Users, Developers, Manufacturing

User Interface

Non-interactive (Daemon)

Programming Language

C, C++


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