i modify a bit the pulse and transition Vi. i aquire a signal from DAQ instead of a sign wave, now i want to control the input data by means of a start stop button i found,
but the problem is that it is not working, i also want to start the program for 5 seconds after pressing the start button and then it should stop automatically after 5 seconds.
i am posting my vi, looking forward for suggestions
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I suggest You use the Elapsed time VI as you do't want to hang your application for the period of 5 sec. When the Time Elapsed fires you just stop the application.
Of course you have to add some additional logics that ignores the Elapsed time signal unless the button is pressed, and of course you have to reset the Elapsed time VI when you press the button.
thanks for the suggestion Marton i did the same as u mentioned but i still have a problem i want that i can aquire signal as much as i want suppose if i want to get the data for 6 seconds then it should stop after 6 second .
now in current senario when i press start button to for aquireing signal and stop after few seconds it didnt stop and continue for 3 seconds and then stops i dont understand why?
and when i set the target time it seems to me that it has no function, can u plz help me out of this situation
I'm sorry I think I don't have the idea.
So my understanding for the application:
Is that correct or you want to do something different?
Anyway the usage of the Elapsed Time is not 100% correct but we may discuss it after clarifying your goal.
you r right exactly that what i mean.
if i start it should aquire data for define time in seconds preferably in milliseconds
and if i want to stop it before the defined time, i can press the stop button so that it has to stop immediatly.
and please guide me if i am wrong to use elapsed time vi
looking forward for ur kind advice
In order to make things as easy as possible I created a simple example that can be used as a template for your application.
The application itself is basicly two parallel running loops. The upper one is for event management, the lower one is a statemachine.
In this application if you press start then the application won't exit just go idle so you can press start again.
Should you have any questions please tell me!
Thankyou very much marton , i will try to run my program with this and if i got some problems i will ask you again if u dont mind.
The solution to this question seems like it could help me, but im using labview v8.5,
is it possible for you to up load the file which would I would be able to open in this version.
I back-converted the VI to 8.5. see the zip attached 🙂
Should you have any questions please feel free to ask!
Thankyou so much, however i dont thing the new file was attatched, could you reattatch it 🙂
thanks for your help