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Thread: MATHDR32 counter variable problem

  1. #1
    Join Date
    28.02.2017
    Posts
    5

    Default MATHDR32 counter variable problem

    We have system with 2 redundant servers ver. 7.0 and 2 clients. We count working hours for few machines using MATHDR32 variables that are recorded in historian. After a accidental power loss the servers restart and some (not all) of the counter variables changed their value. For example one of the variables went from 974 to 128 (this change is recorded in archive). What have gone wrong?

  2. #2
    Join Date
    01.07.2008
    Location
    Salzburg, AT
    Posts
    790

    Default Re: MATHDR32 counter variable problem

    The MATH driver is running only on process server (and not on standby server). Thus, the redundancy switch may result in a different MATH variable value if it is calculated basing on a local (not network) source variable.

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