How to run two sub vi simultaneously??

i need to run two sub vi simultaneously in one main vi, becasue it is a must the two sub vi run exactly at the same time, but now i find that if i put they in one diagram ,in fact they are not exactly run at the same time. if you see in high light mode Just like the attached simple example code. any one can help me to handle this to run the two subvi exactly at the same time ? how to do it ? thanks so much.
Attachments:
how to run subvi simultaneously.vi ‏11 KB

You are correct, they will not run at exactly the same time. What is it you are actually trying to do? What platform are you developing on? What version of LabVIEW? What processor does your target system have? This information is vital in order for us to assist you. In a nutshell, unless you are running a real-time OS, then the OS you are running is not deterministic. When you say "at the same time", what are you actually referring to? As a note, when executing parrallel operations in LabVIEW, the execution order may or may not be the same with the highlight bubble on as it is when it is running without highlight execution. It is highly unlikely that you will be able to just run two sub-vis at the exact same nS. If you are using DAQ boards, you accomplish this through triggering. Please give a detailed description of what you are doing, and what you see the road blocks being.
Thanks
Paul <--Always Learning!!!
sense and simplicity.
Browse my sample VIs?

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I am relatively new to labview, so I am not expert enough to figure this
out,... yet. I am running a test setup using several pieces of test
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In article <8g0rpe$5do$[email protected]>,
[email protected] (llertnac cire) wrote:
>
> I am relatively new to labview, so I am not expert enough to figure
this
> out,... yet. I am running a test setup using several pieces of test
> equipment. Therefore, the screen is pretty busy as it is. At certain
> points in the test, I want to click on a button that calls up a
spectrum
> analyzer, which takes a snapshot of the data, then close. The
problem is
> that when I "click" the call spectrum analyzer button, the o
ther test
> equipment stops taking data. I then pretty much have to restart the
whole
> shebang. Any help would be appreciated.
>
> thanks in advance,
> eric
>
>
Sent via Deja.com http://www.deja.com/
Before you buy.

Running two sub vis in parallel

I need to run two sub vis of a main vi simultaneously in parallel.
one sub vi is to run a demo and the other subvi is an application.The demo should run as a small window and the application should run in background

As i said
"If you have the demo vi as floating and the other vi as Default (not floating), the demo vi will allways stay on top"
If you still have problems, just post your vis, (without any unnecessary code), or ask something specific
Message Edited by Pnt on 04-21-2009 08:18 PM
Attachments:
Clipboard-2.jpg ‏44 KB

Run two VI-s simultaneously

Hi,
I want to run two VI-s simultaneously. I have a VI (Lets say VI-1) that has 4 different parts (look at the image.). What I want is the following:
1. Run VI-1 (Has parts :A1,A2,B1,B2 and all parts will be active.)
2. While VI-1 is running, Run a different VI (VI-2) that needs to access the DAQ card and stage controls.
3. While VI-2 is running, VI-1 also keep on running but the DAQ and Stage parts are deactivated (Part A1 and A2 stays active but B1 and B2 deactivated).
4. VI-2 stops after it finishes its job (in ~1 min).
5. VI-1 keep on running and now as VI-2 stops, the DAQ and Stage parts are active again ( All A1,A2,B1,B2 active).
I was using a global variable to set the DAQ and stage part unavailable while the other program is running and then set the DAQ available again.
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Attachments:
VI-1.PNG ‏17 KB
VI-2.PNG ‏12 KB

Hi Babu726
I modify your example, but keep in mind that it might behave like some sort of state machine but that is not the best way in which you can program a state machine on LabVIEW have a look to this link here they explain how to implement a state machine.
In this example I have modify the code in order to help you with the notifyiers and show you how could you do run to different application and communicate two while loop. Also I have implemented a way to stop both while loops when you press the stop button or there is any error on any of the while loop.
Is not the best or efficient way or program but it might help to get on track.
Regards
Esteban R.
Attachments:
State_Machine.vi ‏28 KB
Control 1.ctl ‏5 KB

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