Teststand Thread Not closing

[mike_lan]

A fairly simple question with hopefully a simple answer so here goes !

I have a main sequence in Teststand 4.0 which calls a second sub sequence. This subsequence calls a third sequence in a new thread, which does a scope measurement with LV7.1 and finishes.
However the second sub sequence does not  close and return to the main sequence. I have to press the TS stop button.

I have tried setting various options about loading and unloading in the new thread options but no difference.
Also in my LV code I have initialise and close termination monitor vi's inserted but they do not help either, perhaps they are not suitable.

Am I missing something or are sub sequences not allowed to open other sequences in new threads ?

Thanks !

[RayFarmer]

Hi,

In the your second sequence are you waiting for the third sequence to complete before allowing  the second sequence to complete?

have you tried stepping through your sequences and to indentifying where the problem lies?

You have to make sure you have released any handles created by you new thread.

Regards

Ray Farmer

[mike_lan]

Hi Ray,

Thanks for the reply.
Yes, the second sequence is waiting for the third sequence to complete before it returns to the main sequence.
The third sequnce consists of a single VI which reads a scope result and completes with a close instrument handle.
I would have thought that this would be sufficient to release the thread.

Is there a Teststand close thread option ?

[kbsave]

Hi mike,
If the third sequence contains a single Vi call, you dont need a subsequence for it. Instead use "Run VI Asynchronously" step and deselect the "Automatically wait.." option in it. This will work similar to new thread and it will also return to the main sequence.

Regards,
Kaustubh

[mike_lan]

Hi Kaustubh,

Good tip. I have found the Automatically wait setting and deselected it and the sequence now runs fine and finishes.
Just one thing, where is the ' Run VI Asynchronously' setting ?, Is this for the Batch processing model only ?
If so that setting is not in there. I am using the sequential model.

Thanks
Mike

[kbsave]

Hi Mike,

Run VI Asynchronously is not a setting. It is a seperate Step Type located at the bottom of the Insertaion Palette under LabVIEW Utillity.

Regards,
Kaustubh

[mike_lan]

Ah, ok.

That works also!

Thanks Kaustubh.