Retaining Last Value without a While loop

[Sman29]

Hello,

I am using LabVIEW 2013. Attached is my VI. I am sending in a "Curr. TestPlan Row" random numbers at random times. I am wanting it to retain its last number whenever this VI is not being called, and then reset the value to it's new value whenever the VI is called again and a new number has been sent. Also attached is a screenshot of when the VI is called.

Please note, I cannot use a WHILE loop, so it has to retain its value a different way...

Thanks in advance for any help!

SM

[Wolleee]

Im not sure why you cant use a while loop, its possible to have a loop iterate one time and use a FGV. I attached a link for this.

You can also use a config file to do this.

https://forums.ni.com/t5/Example-Code/Basic-Functional-Global-Variable-Example/ta-p/3503982

[Sman29]

Matt,

I can't use a WHILE loop for several reasons. What about a FOR loop?

Thanks,
SM

[Kyle97330 · Accepted solution]

Maybe a feedback node?

[altenbach]

There is nothing wrong with a while loop if it iterates only once and used as scaffold for an unititialized shift register. You can also use a globally initialized feedback node, which does not need a while loop.

This entire subVI makes no sense. This is just a continuation of your old thread, banging your head against the same concrete wall. You are digging yourself into a deeper hole again.

[Sman29]

Kyle,

I think a Feedback Node is exactly what I was looking for! Now I just got to figure out how to implement it for my "Curr. TestPlan Row" number properly...

[Sman29]

Matt,

Could you elaborate on the config file? Such as the name of the function so I can look it up or something?

Thanks,
SM