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Thread: Some of numerical display value = -nan(ind)

  1. #1
    Join Date
    01.02.2016
    Posts
    55

    Default Some of numerical display value = -nan(ind)

    Hi all.

    What is the meaning of variable value -nan(ind)?
    Variable outside range or?!

    Best regards,
    MK

  2. #2
    Join Date
    01.07.2008
    Location
    Salzburg, AT
    Posts
    1,039

    Default Re: Some of numerical display value = -nan(ind)

    i've never seen something like this in zenon numerical element. Are you sure it is not some text element and strange limit text or other variable property; or maybe combi-element with strange formula/state text definition?

  3. #3

    Default Re: Some of numerical display value = -nan(ind)

    Maybe you are using Modbus.
    Maybe you are using Datatype REAL.

    > If the value is 0x7F800000, it is positive infinity.

    > If the value is 0xFF800000, it is negative infinity.

    > If the value is in the range 0x7F800001 through 0x7FFFFFFF or in the range
    0xFF800001 through 0xFFFFFFFF, it is NaN

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