Stop declaring event fails to stop the VI

Hello

I have a data acquisition system implemented as a producer / consumer architecture that works well.  In my loop of producer, I had a Master Stop boolean, triggering a send a Notification.  Wait loops of consumption containing Notifications were used to stop all the simultaneous loops before applying my cleanup code.

The problem occurred when I moved the send notification to an event structure related to the change in value on the Boolean value of master Stop (from see attachment).  Now, from the VI, the case of timeout is called immediately.  Could someone give advice on the error of my approach, or to offer improvements?

Thank you

Dave

djroseman wrote:

I'm looking in your previous suggestion concerning the acquisition of data on the notification queue.  I have a problem to understand why the loop would have sent a notification TRUE if I had already changed the value of the Boolean Master Stop, but I need to test it.

The Notifier is not sending a REAL notification, it is simply not get sent anything at all until you press the stop button. Since there is no value timeout connected to it, she's waiting for forever (until a notification is received). The acquisition, while the loop can repeat until all nodes inside he runs, and waiting on the Notification is not terminate until the: a) he receives a notification, b) happens to expire (which he will never do without wired time-out), or c) the declarant is destroyed elsewhere, where error.

So, you get an acquisition, and then the loop is sitting there waiting for a notification. When this notification finally arrives, it stops the loop of the acquisition. Try to set a timeout on waiting on the Notification.

Tags: NI Software

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