Setting a string value from a Sub-VI

[Roadrunna]

Hi,

I am new at labview and wanted to find an example of changing a string value on the top level by using a Sub-VI to make the change.

Thanks

[aputman]

Pass a reference to the string control to the subVI.  Then use a property node with the reference to write back to the control.

[aputman]

Actually that is one way.  There are multiple ways to accomplish it.  Another is to generate your string data and pass it back thru the connector pane.

[Roadrunna]

not sure how to use a connector pane but if there many strings, not sure if this works easily?

[RTSLVU]

Sub VI 

Top level VI

I dont recommend references for beginners because they break the data flow paradigm.

[aputman]

If you don't know how to use connector panes, then I suggest learning the basics.  Watch some videos.  Get acquainted with LabView before building an app.  It will make your life easier in the long run.

http://www.ni.com/gettingstarted/labviewbasics/

[crossrulz]

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@Roadrunna wrote:

not sure how to use a connector pane but if there many strings, not sure if this works easily?

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Don't be afraid of arrays and clusters to make passing data around easier.  But passing the value out of the subVI is definately the easiest way to go.

[Roadrunna]

ok, since i am new, is it possible to get an example on passing the data and reference from a sub-vi?