Can LabView know when executable has finished?

[Peg]

My vi calls an executable (built from a vi but the vi is now lost) using System Exec. While the executable is running, my vi monitors the voltages put out by the executable and modifies them. Therefore the vi and executable need to run together; I wire "False" to "Wait until completion". I would like the vi to know when the executable has completed (run arrow goes white) or if that is not possible, to know if the executable has been closed. Is this possible?

Thanks,

Peg

[mikeporter]

It strikes me that there are several ways of doing this. You could monitor the Windows task list and see when the executable goes away. You could use VI server to try and open a reference to the executable and watch for the reference to go invalid.

Mike...

[Peg]

This seems promising. Some searching turned up "Get Task List" but this causes a broken arrow.  I have LabView 7.1. Is there a similar vi compatible with 7.1?

Thanks, Peg

[mikeporter]

Why is the arrow broken?

Mike...

[Peg]

Because I had not put LVWUtil32.dll in an easily findable place! I think I have it now. The task list shows if the executable is open but not whether it is running. The executable's name disappears from the task list when it is closed. This might be good enough, though it would be nice if there was a way LabView could know if the executable has finished, even though it is still sitting there open. And maybe even close it.

Thanks,

Peg

[mikeporter]

Well, there's my other suggestion - use VI server to connect to the application and use that connection to tell when the program stops or tell it to stop.

Mike...

[VENKATESH.J]

Hi Peg,

You can use .net function in Labview to execute/call the exe and know the status of the executables.whether it is still running or finished executing.

Rgds,

Venky