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Help with the communication settings

  • lama

    lama - 2022-03-01

    Help with the communication settings. Completely confused.
    There are two Wago 750-891 controllers.
    I connect to one - everything is fine. The program is logged in. I can see the state of the variables, everything is working.
    Then I try to hook up the second controller as a Modbus Slave. Everything seems to be configured. The project is compiled without errors.
    But now, when connected to the controller, instead of the input-output values, I get question marks (???). And nothing works.
    Previously, there was such a problem when the Slave was a 750-362 kapler. Then I won by changing the communication parameters.
    It's not working right now.
    Tell me where to dig. Maybe what libraries are needed ? CoDeSys itself loads during configuration: Standart, Syslibcallback, Syslibsockets, Wagolibmodbus_ip_01.

  • jlrsrtk

    jlrsrtk - 2022-11-03

    Good morning, I have the same communication problem. I'm Using the Codesys 2.3 IEC 61131-3.
    Im triying to pull diferent registers from Auto-maskin Engine Controllers to replicate some status in a DO on Wago 750-0891 PLC. But looks something missing in the 'ETHERNET_MODBUSMASTER_UDP' FB in the Library 'ModbusEhernet_04.lib 10.7.1801:47:36'.
    Auto-maskin IP
    Wago 750-0891 IP

    I Tried to use the CODESYS V3.5 but, I don't find the way to get the Wago devices Library in to that version to select the Wago 750-0891 PLC and use a easy way to get that register from Auto-maskin device to Wago PLC.

    Any one can help?


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