How can i execute once

[jhfgfuygiy]

i build up small vi to check value from dll file and i want to play sound as it become 0

so as i press Run continuously the sound repeted and dosn't stop until i abort execution

now how can i force labview to play sound once as i in Run continuously mode

i'm waiting u r help

[RDR]

Don't use run continuously...use a 'while loop' with a stop condition...

Search the LabVIEW Help for 'While Loop' for more information.

-B

[smercurio_fc]

As noted, don't use Run Continuously. That mode is intended for debugging, not for normal operation. It's equivalent to you pressing the Run button all the time, so your VI starts from the beginning each time.

[RavensFan]

I would think the name "Run continuously" would be enough of a clue to tell someone who wants to run something only once not to use that button.

[jhfgfuygiy]

okay people i think i get your point

but still one question as i build this VI it's gonna to be excute once or continuosly ?????

[smercurio_fc]

As noted, a while loop will do that. If you have not already done so, it is recommended that you go through the tutorial(s) and look over the material in the NI Developer Zone's Learning Center which provides links to other materials and other tutorials. You can also take the online courses for free.

[Harold_Timmis]

well a while loop will run untill you terminate it or it reaches the conditions you set

if you want to run it once and only once than you don't need a while loop, you could also use a while loop with an event structure 

[smercurio_fc]

You could also do something as trivial as this:

[jhfgfuygiy]

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smercurio_fc wrote:
You could also do something as trivial as this:

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yea this is gonna to work if i run once but continously it will still repet and repet

[jhfgfuygiy]

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Harold Timmis wrote:

well a while loop will run untill you terminate it or it reaches the conditions you set

if you want to run it once and only once than you don't need a while loop, you could also use a while loop with an event structure 

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i can't open your VI i use Labview v8.5