Hello, all,
I realize this may be too large of a topic to handle on the forum, but please bear with it; any and all advice and suggestions are greatly appreciated.
I was introduced to LabVIEW about two months ago and, after some tutorials and self-teaching, inherited this program for the lab I work in. Basically, as far as I can tell it runs a GC (gas chromatograph) that takes samples from four pre-run analog inputs and a run analog input, graphing the latter. Originally, the program consisted of a timed loop (following the defining of variables, which is the same) with two frames, one before a GC run in which the four analog inputs were taken, and a second one which contains all the GC programming and other analog input reading. My goal is to get the analog readings (and operation of certain valves, which are all in the same loop) to run constantly, taking readings or adjusting for a varied valve value every thirty seconds, while keeping the GC programming such that it waits a given time in between runs (as before) and then executes. I separated the analog inputs into their own while loop and placed it evenly with the timed loop that has the wait time followed by the GC programming, and though the analog readings now work all the time, not just before a run, after the wait time is up, the GC programming fails to engage – when I run it and highlight steps, the second frame in the timed loop lights up, but the Detector V (other analog input) doesn’t take readings and there is no graph. If I disable or delete the While Loop, the Timed Loop works, but obviously I don't get the four analog inputs or valve adjustment abilities. Is this a timing issue? Is the while loop altering things? I’m still new to this, but again, any and all help would be great. Thanks!
