SubVI

[karthas]

Hi,

I want to run a continuous process. is it possible to put this vi as a sub vi in another VI, since i want to use 4 instances of this subvi at the same time.

i have attached the subvi. please help me.

bye

karthik :headbang:

Download File:post-870-1112632398.vi

[Albert-Jan Brouwer]

  I want to run a continuous process. is it possible to put this vi as a sub vi in another VI, since i want to use 4 instances of this subvi at the same time.

4429[/snapback]

You want four instances that run asynchronously? One option

is to create a reentrant subVI and have four while loops,

each containing a call to the reentrant VI. Because it

is reentrant, each diagram reference will have its own

dataspace and can be called at the same time as any other

diagram reference. This is sort of like having four instances.

Another option is to place a static VI reference to a reentrant

VI, wire it to a VI property node that extracts the VI name,

wire that name into "Open VI reference" with the "prepare for

reentrant run" option mask bit set (mask value == 8) and call

the run VI method on the resulting VI instance reference. To

pass instantiation parameters you can call the "Set Control

Value" method on the VI instance before running it.

Neither of the above works when the front panel of the

instance must be visible/usable. For that, you must instantiate

a template (a VI with a .vit instead of .vi extension).

Templates may not be loaded in memory on instantiation,

so you will have to pass an appropriate path to the "Open VI

Reference" call (and call "run VI" on the resulting reference).