I have an issue and would like to know if someone can make me an example with and explaination. In my main program i have a subvi and in that subvi i have another subvi preforming a calculation. I need to bring the values of the subvi 2 layers up to the main program. I used the link below on another program which worked but I'm having issues doing it on the program with subvis 2 and 3 layers deep. I tried creating a reference then placing the reference on the main program but the values was not propagation upward to the main program. I do not have the file available to view on this forum. http://www.ni.com/white-paper/3159/en/

@*E* wrote: Your subVI needs to have the terminals configured to accept the Control reference from Main. How do i do this? In my real program it will call the first subvi with proform calculations. That sub vi Call other subvi with in its block diagram. i need to get those values back over to the main program. If i have them open i can see the values being calculated but i dont know how to display it correctly on the main program. While working on the front panel, you need to set up the connector pane similar to how the Untitled connector pane is configured. You'll need a Reference control for the numeric as an input on your front panel. Simplest way to do this is to create a reference on Main, Copy the reference to the block diagram of subVI and then Change to Control. In the old LabVIEW 8.2 days, you'll need to right click on the icon editor and do a Show Connector Pane. Click on the terminal on the connector pane that you want to wire into and then select your Reference control. Now, just make sure you're passing the reference through to whichever VI needs to work with it. In the case you're describing, Main should pass the reference to subVI which should pass the reference to Untitled. Any updates to the reference in Untitled will be reflected in the control on Main.

LabVIEW

using control referrences in a subvi

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Thanks for your help. I will try everything you say and see if it works thanks again.

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LabVIEW

using control referrences in a subvi

Re: using control referrences in a subvi