run once when click on button

[Mathias_P]

Hello!

I have a question that is probably very obvious but I cant think of a good way to do it:

I want to have a LV-programme running continously and perform a measurement every time someone clicks a button. Then it should be idle and wait for the next mouse click to perform the same thing.

Thanks,

Mathias

[Rimmergogo]

Hi,

I think the best and most simple way is to use a 'case structure'.

Andries

[Mathias_P]

Thanks for your reply Andries,

I was going for the case structure, but I ran in to problems when it came to turning the logic off after doing a measurement so that it does not keep measuring several times.

So how would one turn the case into false after measuring?

I attach my VI so you can see the case structure I have right now with a start button.

[TerraNova]

Hi!

You can use Local Variable on RT or Property Node/Local Variable on Host.

Have a nice day!

[devchander]

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Then it should be idle and wait for the next mouse click to perform the same thing.

---

Using Event Structure is the way to go!    See here and here to start using events

[devchander]

Look at attached vi

[Mathias_P]

That looks very handy, I only have the basic package of LV unfortunately, so I am not sure I can use the event structure in a proper way.

I will see if I can use yours 

Message Edited by Mathias_P on 05-28-2007 04:36 AM

[Rimmergogo]

Hi,

If you can not use event structures...
try this the vi I attached.
Its with a case structure. The record button is modified (in properties).

Andries

[Mathias_P]

I got it to work with the event structure, thanks for the suggestions

Message Edited by Mathias_P on 05-28-2007 05:47 AM

[devchander]

Note: Events would be a better option since you mentioned an 'idle state' for your vi

Connecting '-1' ( default) to timeout terminal, shall make your vi wait for an event and your while loop shall not iterate during absence of event