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    Why does the ATV58 drive with Ethernet card trip on CNF communication fault when Timeout is set other than ZERO and I/O Scanning is set to NO.

    Issue:   Why does the ATV58 drive with Ethernet card trip on CNF communication fault when Timeout is set other than ZERO and I/O Scanning is set to NO.
     
    Product Line:   ATV58
     
    Environment:  All with Ethernet card
     
    Cause:   CNF fault
     
    Resolution:   
    To prevent the timeout, the drive`s word 400 must be continuously written to in less than 15 second increments, repeatedly.
    In essence, every ``good`` write to W400 resets the drive`s internal timeout timer. If the timer times out, the drive trips on a CNF error.

    Additionally, check the connection of the communication network to the drive controller because may be loose or improperly connected, therefore not communicating.


     

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