First call is always true

I want to set the value of a numeric slider every time a sertain mode is set. I would suspect the "first call' would be the obvius solution. But for some reson it is always
'true"
Is there a nother good way of solving this problem, or am I doing somthing wrong?
/REO
Attachments:
Rhino interface.vi ‏290 KB

Hai,
The first call function will always return TRUE in your case the reason is as follows: When a VI runs for the first time this fuction returns TRUE and this VI should remain in memory (in execution mode) so that when it is called the next time it will give FALSE. But the vi does not stay in memory i.e. when you press run button it executes and unloads from memory when execution completes.
One Workaround is keep the VI in memory or put a while loop with unintialized shift register and should run only once! Look at the VI that i have attached.
Hope this helps.
With regards,
JK
(Certified LabVIEW Developer)
Give Kudos for Good Answers, and Mark it a solution if your problem is solved.
Attachments:
Rhino interface1.vi ‏129 KB

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Go to Solution.

First things first:
I am not a LVOOP expert but I am trying!
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Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

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forum.vi ‏467 KB

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