Toggling values

[LD_PVL]

Hello,

Is there a quick way to progam a section in LabVIEW to toggle the value of a variable every, say, 3 seconds, non-stop? For example, I want a control button to turn on and off every 3 seconds. I have tried various methods but they all seem a bit messy.

Thank you,

LD

[RavensFan]

Shift register in a while loop.  Not! function on that wire.  Wait 3000 ms in the loop.

Not messy at all!

Message Edited by Ravens Fan on 02-16-2010 08:17 PM

[LD_PVL]

Could you please attach the vi file, there's some components I'm not sure what they are.

And this configuration would make the whole program to wait right? Is there a way to get that only bit to toggle and the rest of the program working without any delay? I am still working on the program from yesterday that you helped me with

Thanks a lot for your help,

LD

[RavensFan · Accepted solution]

It's a VI snippet.  If you have LV 2009, drag and drop the image from your browser into your block diagram.

Which functions don't you know?  It has a wait (ms) and Not functions.  That's it.

Yes, each loop iteration will take 3 seconds.  If that is too long for other reasons, then you can use the elapsed time function to toggle the shift register.

Message Edited by Ravens Fan on 02-16-2010 09:41 PM

[LD_PVL]

Thank you very much. Unfortunately I'm suing LabVIEW 8.5 so can't drag and drop. I usually have icons displayed so I got a bit confused about the representation of the components but it's all fine now. Never used a shift register before so you really helped me to find out a basic useful thing.

PS: and thanks for the tutorials.

Message Edited by LD_PVL on 02-17-2010 06:24 PM