I'd imagine this problem has a very simple solution, but I don't seem to be able to find one. I've searched around the forums quite a bit but nothing has answered my question. I have code to calculate a pressure ramp rate inside a case structure, where the 'True' case runs the code and the 'False' case sets flow rate to zero. However, for the calculation to be correct, the software needs to know the starting pressure in order to calculate the incremental set points. Currently I have the "starting pressure" as a manual input. I'm trying to find a way to request the pressure value from the DAQ input on the Boolean button press that changes the case structure to 'True'. I know that a Local Variable will pass the information over, however it will do this once per loop iteration and I don't want to cause any race situations with LVs. Is there a way that the code in the case structure can request a single data value from the DAQ pressure input on the Boolean button press? Apologies if this is very basic. I've been trying to teach myself LabVIEW for the past couple of months and I'm struggling a little!

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@crossrulz wrote:

Did you make an event in the Event Structure for Stop Logging: Value Change? I'm thinking you did not.

Of course! Thank you. everything is working now. Thanks again. I have a long way to go, but I feel like I'm making progress.

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