How do I know if a VI is already running before calling Start Asynchronous Call?
The new node to start the asynchronous call is great for the spawning of several instances of the reentrant vis. However, I fell a little bit using for screws not reentrant the old practice of using the method "Run a VI" would allow us to check the Execution.State of the VI before calling the method to execute. This way if the State was running or running at a higher level, we could spend the invoke node and just use a property node to open the front panel. With the starting node the asynchronous call, it seems that we must use a strictly typed static VI reference, and when we open the reference VI, VI gets booked and his Execution.State = running. So, how whether it is not only reserved by wire, but actually running before calling Start redundant?
Moreover, the redundant beginning has an interesting behavior. Actually, it will cause the targeted VI must be performed again after it stops. Even if you tap the Abort button on the target VI, it run immediately still and always the same number of times as the starting node the asynchronous call is executed. There is nothing wrong with that, and I guess the simple answer is to simply go back to the old method of "run a VI. It's just that ability over these inputs directly to the connector pane is so nice. Maybe missing me something obvious. Oh, I am referring to the call and forget mode (0x80).
Thank you
Dan
Maybe missing me something obvious. Oh, I am referring to the call and forget mode (0x80).
Yes you have forgotten that he forgets the Run method always seems to be a better choice for this mode
Tags: NI Software
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