Problems with Toggle Control

[bonnerupc]

Please see the attached snippet.

Control is for a Thorlabs shutter which opens and closes with the same command (ens).  (ens?) queries the state of the shutter.  In order to use in a loop as shown, the user must manually switch the (latch when released) boolean rather than a switch-and-remain boolean.  Otherwise the shutter opens/closes on each loop iteration.

Is there a way program a front panel control standard boolean control so that I can control programmatically.  What is needed is a simple control which remains true when shutter is open and closes shutter when false?

Thanks for the suggestions!

Chris

[aputman · Accepted solution]

Use an event structure with a Value Change event registered for your boolean button (switch when released).  This way, the command is only sent when a change in the boolean is detected.

[bonnerupc]

Thanks!

Don't know why I didn't see that solution - duh?  I used the Pt-by-Pt "Data Change?" vi instead; works great.

Appreciate your kick start for my programming..