Asynchronous I/O CodeSys-OPC-Server

  • cardosim

    cardosim - 2011-03-25

    I'm trying to establish a communication between a CoDeSys-OPC-Server and one OPC Client (for instance, Matrikon OPC Explorer), both running in the same computer.

    Although my PLC configuration is correct (at least, I think so) and I can load all the PLC tags on the client, I'm not able to asynchronous read them. The I/O operations just work when I use Sync mode.
    The same situation occurs when I try to use other clients (like Kepware OPC Client, ...).

    Does anybody know why this happen? Does the CodeSys-OPC-Server work just like a Synchronous I/O server?
    And is there any problem to simultaneously run two different CodeSys-OPC-Servers (residing in different computers) connected to the same PLC?

    Windows 7
    CoDeSys V2.3.5
    PLC Moeller XC201
    Matrikon OPC Explorer 5.0

  • cardosim

    cardosim - 2011-03-30

    Anyone, please?

  • RolandWagner

    RolandWagner - 2011-03-31

    I just heard that this was bug was already known and fixed with the CoDeSys V2.3 OPC Server version

    After a registration you can download the latest version from our website under


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