subVI running simultaneously

[News di Libero]

I'm a beginner in labview and I'm trying to translate a program I put down
months ago in VB.
I've got a block that executes a task and that loops continuously...
If I need 8 tasks running togheter independently, I copy the block 8 times
in a main while loop and it works correctly; if I try to convert the single
block into a subVI in order to call it 8 times from a main VI, the first
subVI called never release the program control, even using global variables
or property nodes, so the other subVI will never be called.
In VB this wasn't a problem because of the events programming, any ideas for
labview?

Thank You

Franco

[Doug (CapeFl)]

Is your 1st subvi in its own while loop? If so, and it its not set to run just once (check the Stop/Coninue node), then you'll have the problem you mention. Either remove the while loop or set its Stop/Continue node to run just once (wire a False to it, perhaps).
Also, if you run the same vi numerous times in one main vi, you may need to make that subvi reentrant - do this with its property node. Reentrant will allow it to be called numerous time, and will contain its own data set.

Good luck with it,
Doug

[TommyB]

Sounds like you need to make the VI reentrant as Doug said. This should fix
the problem.
-Tom
"News di Libero" wrote in message
news:W9MO7.7$j_5.851@twister1.libero.it...
> I'm a beginner in labview and I'm trying to translate a program I put down
> months ago in VB.
> I've got a block that executes a task and that loops continuously...
> If I need 8 tasks running togheter independently, I copy the block 8 times
> in a main while loop and it works correctly; if I try to convert the
single
> block into a subVI in order to call it 8 times from a main VI, the first
> subVI called never release the program control, even using global
variables
> or property nodes, so the other subVI will never be called.
> In VB this wasn't a problem because of t
he events programming, any ideas
for
> labview?
>
> Thank You
>
> Franco
>
>
>