Returns TRUE if semaphore is not a valid semaphore refnum.

Use this VI in conjunction with the other Semaphore VIs to implement a semaphore in LabVIEW.


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Inputs/Outputs

  • cdlrn.png semaphore —

    semaphore is a reference to a semaphore.

  • ibool.png not a semaphore —

    not a semaphore is TRUE if semaphore is not a valid semaphore reference.