Interpreting the Symbol File

  • ndzied1

    ndzied1 - 2007-12-07

    I'm trying to find out how to interpret a symbol file created by CoDeSys.

    I'm working with our local Beijer HMI office to try to get them to write drives so I can import a symbol file in the HMI and have access to the variables in the PLC.

    I know I have done this with the Moeller HMI's and their X-Control PLC and also with the Bosch Rexroth HMI and IndraLogic PLC.

    Does anyone know how this is accomplished? Is is a form of OPC? Is it straight DCOM messaging? Or something else...


  • Anonymous - 2008-01-09

    Originally created by: Nicolai_Hanssing

    When you talk about HMI, I assume its not the built in HMI?

    If not then a solution is to use a CoDeSys gateway installed somewhere.

    CoDesys then has a OPC-server using the symbol-file that connects towards the PLC using said gateway. So our application would use OPC.

    Other field-busses may offcourse also be used if supported by your target/HMI.

    Lastly you could use the CoDeSys protocol to communicate directly to the PLC. I dont now if theres a document or any sotware components available for this?


    Nicolai Hanssing


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