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Hi Everyone! I use a s7-1500 controller. I use MB_CLIENT function to read data from an other PLC. Everything work fine until I make change in my project and download to the PLC. I have error 80A3 and impossible to acknowledge until I make a stop/Run of the plc. Anyone can help me? Best Regards,

  1. Hi Maesa, If you use instances declared in a FB function. Try to use a global instance of MB_clien like this: use a global DB to declare the "ModbusDataconnectParamClient" structure. This will fix your problem and when you download the project, it will not cause problem for MB_client function. hopeRead more

    Hi Maesa,

    If you use instances declared in a FB function.

    Try to use a global instance of MB_clien like this:

    use a global DB to declare the “ModbusDataconnectParamClient” structure.

    This will fix your problem and when you download the project, it will not cause problem for MB_client function.

    hope this will help you

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