how to stop while loop after getting result once

[perumpadapu]

I have given a  query in serail port write and read by the serail port read VI in a sequence loop.But never it yield result.  Thus I put a delay in read frame  with 1,10,100, 1000 etc millisec. But it never gave a result. Thus I put sequence loop inside a while loop  with timer outside sequence loop and inside while loop and I put "i " terminal 1 but never worked its going on running.So can you please help me with a way to stop while loop.

[Dennis_Knutson]

I don't see how this is an Instrument Control question. It should have been posted to the LabVIEW board.

There is no such thing as a sequence loop. There is a sequence structure and a timed sequence. A while loop will terminate when the conditional terminal gets a specific Boolean value. There is nothing that you can wire to it's 'i' terminal. That is an indicator so what you are describing is senseless. At the very least, you should have attached an image of your block diagram.

[perumpadapu]

I had used the sequence structure .  The conditional terminal is given "continue if true" option, as i changed it to stop if true it is not at all giving any result. "i " is for iterations I think. So please help

[Dennis_Knutson]

A while loop will always stop if the value of the conditional terminal is met. Can't help any more if you don't attach your code.