Typedef not indicating properly

[JeffOverton]

Hey everybody,

  I'm running LabVIEW 8.2 Full DS, and I'm having some trouble with something that I think is very specific.  I'm using a strict typedef as a control/indicator, and the problem comes when I programmatically read 9 FieldPoint targets and try to update the display.  I'm using the Control Value:Set [Variant] method to force disabled numeric controls to update on a timeout event (the other events actually control the rig), but the controls don't visibly update.  I can probe all of them and they show proper data, and I can force the displays in quick test vis using the exact same methodology, so I am kind of at a loss.

  I have the control set inside a while loop to keep it updated, which is the only thing different than my little test cases.  The FieldPoint addresses are passed as an array, and indexed through a for loop, with a case statement updating the proper control.

Thanks,

  Jeff

[altenbach]

Can you attach a simplified VI that shows the problem using simulated data?

[JeffOverton]

Sure thing, although I apologize because it's a rush job.  The actual code is on a non-internet capable machine.  Also, I noticed that my data loss happens on the edge of the case statement.

 - Jeff

Message Edited by JeffCWRU on 01-02-2008 01:55 PM

[altenbach]

You need to keep your cluster in a shift register or for each new ieration you start out with the original data.

It is also probably sufficient to write the value after the loop (A local variable might be sufficient to replace the control property write. It is much less overhead).

[JeffOverton]

I actually had shift registers, I just forgot to put them in the sample code

Anyway, I have a workaround that's sufficient for now.  I just randomly update them individually, which gives me about a quarter second refresh on a ten millisecond timeout.