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PLC001-PLC Communication Timeout

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  • PLC001-PLC Communication Timeout

    Getting this weird error. Researched forums and can't find a resolution. Communicating over an ethernet switch, Do-More connection is good, C-More EA7 screen can send and read projects, but this error keeps appearing and cannot test my buttons. Any help is appreciated.

  • #2
    From C-more help topic CM306:
    Should only occur if message has been corrupted or protocol version is mismatched. Check versions and update appropriately. If versions are correct, check cabling, routing and switches for bad packets.

    With the Symbolic Addressing driver, this error could indicate:
    • A tag that is being requested that does not exist in the PLC,
    • A tag that is being requested is misspelled in C-More,
    • The max length for a String tag is incorrect.
    If you have an urgent issue, please contact AutomationDirect's Technical Support team. Technical Support: 1(800) 633-0405 or (770) 844-4200 Email Tech Support


    • #3
      My first guess would be that you used the C-more Panel IP address in the Panel Manager Device configuration, instead of the actual Do-more IP address. Give us your IP's and/or screen shots of the configurations.


      • #4
        That was it OpZed. Changed IP to PLCs address and now it works. Thank you!!!