Detection of change DAQmx - cancel the event error logging

I am trying to use DAQmx for detection on some digital lines of changes. I think I installed everything in this article, but I always get error 'Error 1 has occurred to unregister events in the detection of change in Test - Error.vi Unregister'. When I change the structure to register for another event, not involving DAQmx but using the same structure, I get this error.

I need this implementation on a code that runs for a very long time and according to the above article:

"Use the Unregister function for events and function to destroy the user events to release the associated events and the reference of user event. LabVIEW unregisters all events and destroyed the existing user automatically events when the top-level VI end of execution. However, to conserve memory resources, National Instruments recommends that you unsubscribe and destroy the user events explicitly, especially in an application that is running for a long period of time. »

Here are some screenshots of my comic, but also the .vi. Note that the detection of real change does not work well, it's just after I click on 'stop' I get the error generated by the "unregister to events.vi.

Note When you transfer the .vi, I saw the issues described on this thread and had to change the name of the file...

crossrulz wrote:

You must cancel the registration of the event before deleting the task DAQmx.

Delete the task implicitly cancels registration of events.  If you disable the task, rather than simply cancel, the event is already cancelled and you don't need two nodes.

Or quite simply, the event is part of the job.  no tasks, no event and LabVIEW cleans the records for the non-existent event.  Other events that are not 'owned' by similar of e/s Sessions must use the unregister (as of the events of user)

Tags: NI Software

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