updated control values automatically

[fikadu]

Dear all ,  I am trying to update a Numeric Control from GUI manually and  from VI automatically in labview.  While changing the setting of  a device I am trying to operate,  a parameter   controlled by the Numeric Control is changed internally. This has to be updated to the GUI.  I couldn't  find a way to implement this. would you help me please?  I would like to  thank in advance.

[Bob_Schor]

It would really help us to help you if you attached your VI so we could better understand what you are trying to do.

Bob Schor

[GerdW]

Hi fikadu,

in the simplest case you would use a local variable of this control…

But I agree with Bob: attach your VI when you have problems with this VI!

[fikadu]

Thank you a lot  for you  response.  

My program is not complete enough to run. Thus, I just simply attached the VI and the Controls I used. My intention is to feed back the two outputs of the VI to  'LoadPreset' and 'TunePreset' Controls(update to the GUI).  By the way, I was trying by creating a local variable.  The problem here is, while  changing the value manually from the front panel, it couldn't be effective.  Thank you once again for your help.

[crossrulz]

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fikadu wrote:  The problem here is, while  changing the value manually from the front panel, it couldn't be effective. 

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1. Your controls need to be inside of the loop in order to be read.

2. Constantly updating a control just makes for a horrible user experience.  The occasional update due to the user doing something is generally fine.  But the control should be a user set point.  Use an indicator to show the actual value and let the user change things as needed.  You could also add a button to let the user decide when the control should be synchronized.