wait(ms) functionality

[oldpan]

Hi all,

if one wires a numerical constant A [ms] to the timer Wait(ms) does it mean that the current VI runs for A ms, or for A ms the VI passes the control to the processor to control other programs?

Thanks,
Dana

[vt92]

Yes, for A ms, the VI passes the control to the processor to control other programs.  This assumes your LabVIEW app. only has one thread (no parallel loops, etc.)

[tst]

Actually, it means neither. The exact usage of the processor is determined by all kinds of things, not just wait functions. You should regard the wait function as simply that - it finishes executing X ms after it was called. What it does in those X ms is irrelevant, although it does serve to minimize CPU usage, because without it, LV will try to run a loop as fast as possible. You should note that during those X ms LabVIEW might still use the processor (e.g. if you have other code which needs to execute).