system exec

[haijun]

Hello, how to use the system Exec to run the VI?

[GerdW]

Hi haijun,

SystemExec is used to call other programs (or DOS commands) in the command shell. It's not used to call other vis!
To call other vis you simply put them in your main vi or use the VI server capabilities...

[Ray.R]

Gerd explained it well. 🙂

Curious:  why did you want to use SysExec to run a VI?  Can you explain what you wanted to do?

[haijun]

Now i want to write the Test Api.i don't want to alway add the all sub vi in the main program.it's slow for program and also difficult for other user.i want to user only give the vi path to test Api.let Api load the subvi run and get the result.after run finished also can release the memory .it's good for test program running.

by the way,for vi server today i wll try ........ thanks for you help.

[haijun]

I can use the below attachment system Exec to open and run the vi.but it's always open the labview program.it's not good for and not my purpose,

[Dennis_Knutson]

What you've got there makes no sense. Eliminate the system exec.

[haijun]

yes,i just got it.,but i am very strange for that before i use the "open vi referance" to load the Vi it's alway caution me the vi not in momery, now it's ok.. would you tell me why?

[dan_u]

If you wire a string to 'open VI reference' it will only succeed if the VI is in memory. If you wire a path it will load the VI from that location (doesn't have to be in memory yet).
So probably you wired a string when it didn't work?