Using .vit for multiple instance
I have a main vi, uses rendevous to run multiple subvis at the same time, that needs to be opened separately per user which need to open the same vi multiple times.
I tried to use .vit, changed main vi to vit. Created new vi that calls this main.vit. However this doesn't run multiple times, only opens the first window. Then I used subVIs as vit. This even creates a bigger problem. The sub vi's that opened doesn't run.
I think I'm missing some basic concepts of using vit. I searched the forum, found some articles but I can't find what I'm doing wrong.
Should main vit calling several sub vit's work?
Any tips, comments would help.
Thank you very much.
"CoastalMaineBird" <[email protected]> wrote in message news:[email protected]..
November 30, -0001
View Thread Other 6 Replies on forums.ni.com
VIT is not for multiple instances, it is a TEMPLATE. That means you open it up, but when you go to save it, it pretends that it's untitled, and you have to give it a new name.
That's useful - for example, I have a TIMING TEMPLATE. When I want to time something. I open this VIT file. I insert the code I want to time into a certain frame, and run it. I usually don't save it, but if I do, I have to give it a new name.
That way, the next time I open it, it's fresh again.
If you want to run the same VI multiple times in parallel, you must:
- Understand what RE-ENTRANT EXECUTION means.
- Set the VI to use re-entrant execution.
- Use the VI Server to open each instance dynamically.
- Use the VI Server to CLOSE each instance dynamically.
- Be very careful about getting data into and out of the VI in question.
VI Templates can also be used to run multiple instances of the same vi. If you open a .vit dynamically several times, you'll end up with several instances of the vit. Actually, this is an intended use of the vi templates. And it works great. The great benefit over reentrant vi's is that the vi templates have front panels of there own. So it's great to use vit's when you want several similar panel, without copying the code. Reentrant vi's where not intended for this. Before 8.0, reentrant vi's didn't even have panels that updated properly, so you had to use a vit.
Hi, I have a main vi, uses rendevous to run multiple subvis at the same time, that needs to be opened separately per user which need to open the same vi multiple times. I tried to use .vit, changed main vi to vit. Created new vi that calls this main.
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