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Raspberry+Codesys+ Modbus RTU R485

ffares
2016-05-20
2016-05-30
  • ffares - 2016-05-20

    Hi everyone, i am new to codesys and Raspberry.
    I downloaded codesys V3.5 sp8 and also codesys control for raspberry SL. i also update the raspberry pi from codesys.
    i need to use the Pi like a modbus master and to configure it in the way that it can communicate with other modbus slave devices over the physical layer RTU RS485 and send commands and receive responses.
    i created a project in codesys and i added a modbus master object and a modbus slave object.
    so now the question is what should i do next.
    - should i download some library to codesys?
    - how to configure the pi I/Os to use them as RS485 interface
    - i guess i don't need to write any program in codesys for such usecase, is that true?

    any help is greatly apreciated and thank in advanced.

     
  • shooter - 2016-05-30

    This is version 2 box so move over to V3 raspberry

     

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