How to add indicators from subVIs to main VI

Hi,
I have a similar problem as well as a question or two about running subVI's. Basically, I am trying to create a project that will use both syringe pump injections and the opening and closing of valves to transport a fluid. As of now, I have a program written for the syringe pump that I was able to modify from an instrument driver from the manufactuer of the syringe. The goal is to just have the operator press a single run button, as all volume and flow rate conditions will stay the same from trial to trial. I created two separate syringe pump suvbVI's, one injects 1mL of fluid at 1mL/min and the second injects 2mL of fluid at 1mL/min.
I want to use the flat sequence structure to run these two subVI's sequentially, which I am having some difficulty with. I set this up so that the operator must press an "OK" button in order for the case structre to read "true" and begin the operations in the flat sequence. Both subVI's work correctly if operated on their own. However, when I use the highlight data flow function (lightbulb on block diagram) I can see that pressing the OK button causes the case structure to read true, and the program to engage the first subVI. Upon opening the block diagram of the first subVI and using the same lightbulb tool, I noticed that the information is getting stuck in the first while loop and repeating itself endlessly. Any suggestions as to why this may be the case? (I did go into each subVI and changed the VISA resource name to the correct COM port)
Also, once I figure out how to get the information to flow correctly, I do want my main VI front panel to display some of the front panel indicators on the syringe pump VI's, such as the volume dispense and tank. I would like to know more information about how to reference a wire to the subVI as previously mentioned in this thread.
Sorry this was such a long post! I attached the main VI with the embedded syringe pump subVI's as well as both individual subVI's. Any suggestions would be greatly appreciated!
Thanks
Attachments:
Test Project_Pumps.vi ‏9 KB
NE-50X Push Button Example-tester_1mL_3_30_1013.vi ‏289 KB
NE-50X Push Button Example-tester_2mL_3_30_1016.vi ‏289 KB

galXE1,
From my example you can use the invoke node method of "get all" and it will retrieve all the indicator names and values and then you can get the values you want.
Sorry for not posting this originally but without modifying your code a bunch your quickest option is to use shared variables. If you have important vital tasks they aren't the best but if you're just looking to pass data between vi's then they are you're easiest option.
Creating a Shared Variable - look at single process shared variable section.
http://zone.ni.com/devzone/cda/tut/p/id/4679
So you basically call your subvi every time the loop iterates to perform some execution and then you can update your main front panel with the newest values. Calling the subvi with a loop in it. Nothing special but it gets the job done. Its not very good practice if you have a bunch of values you want to pass.
See subvi calculations.jpg
A better approach to passing data between vi's is detailed in the document. Its called a Functional Global Variable.
https://decibel.ni.com/content/docs/DOC-12876
Kyle Hartley
RIO Product Support Engineer
National Instruments
Attachments:
Subvi calculations.JPG ‏42 KB

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I will have nearly 8-10 events in my final program and I find it easier to shift them to sub vi.
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How to add indicators from subVIs to main VI

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