<br> In your VI you have the mechanical action as switch-until-released (which may be exactly what you want), BUT this means its boolean value is false except when you click on it. And running the VI and clicking on the button precisely when it is read is almost impossible to do. So, the loop always stops after first iteration.
You're not running the VI in the 'Run Continuously' mode are you? That may give you the impression that your While Loop is running continously whereas in fact it only re-running the VI as soon as it stops. If you run the VI in execution highlight mode (click on the light bulb on the diagram toolbar), you can "debug" and see why your VI doesn't work. Hope this helps. Regards, <i>Khalid</i><br>
