Unable to write OPC Value

Forum Home Forums Communicating with Devices OPC Unable to write OPC Value

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  • #9046
    Dons
    Participant

    I have configured the opc server correctly but I can only read the values.
    When I try to write values, Scada Communicator gives me an error.
    In the log file the error shown is “Illegal Command”.
    What can be the mistake?

    In the following link there is the image of the Scada Communicator.

    Image

    Thanks in advance for the help.

    • This topic was modified 4 months, 1 week ago by Mikhail.
    #9049
    Mikhail
    Moderator

    Please check the error details in communication line log.

    #9052
    Dons
    Participant

    The communication log tell me only “Illegal Command”.

    You can read the log file at this Link

    #9055
    Mikhail
    Moderator

    So, what is the configuration of the OPC driver related to writing tags?

    #9059
    Dons
    Participant

    I found the problem. If I am connected to the opc server with more than 1 client, the second client is unable to send the commands. This is an opc server problems.

    #9063
    Mikhail
    Moderator

    Thanks for the info. If possible, move from classic OPC to OPC UA.

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