Having trouble figuring out how to use trigger inputs as a general purpose input.

Question

I'm trying to use "Trigger 1" as a general purpose input to indicate the status of external circuitry. I can't seem to get the "Read High-Speed Capture Status" to indicate anything. I'm using the "Configure High-Speed Capture" VI with the capture mode set to Inverting Digital Input, and that VI feeds into a Do-While loop which contains the "Read High-Speed Capture Status" VI, which has the Ret Vect set to 0. I see from the online help that the High-Speed Capture function is available on Servo and Closed-Loop stepper systems, which I suppose is to enable the ability to read the position of the encoders. I'm using an open loop stepper system, so are these High-Speed Capture fun
ctions unavailable even though I'm looking only for status (Trigger 1), and not concerned with reading position? Thanks in advance, Rob.

Answer 1

Thanks for the answer Ken. I'm going to try a different workaround. The global was too slow, and I think I'll break my subVI into two parts. I'll create a sub that has all the setup stuff in it, then embed the actual "check trigger status" loop in the main VI. The loop contains only 2 or 3 nodes. Too bad LabView works this way. I can see one reason it should, but another larger reason it shouldn't. Wishlist.... Oh, speaking of wishlist, I like the improvements that 6.0 has brought, but one thing still bugs me. There's no way to have LabView remember the place to look for files when it's first started. It defaults to "My Documents", which should be, as all LabView programers know "LabVIEW6\user.lib" (or whatever). Of course, once th
ere, LabView remembers for that session. Next time it's started, back to "My Documents" again. How 'bout fixing the "Options", "Path" settings so that it will actually remember the path set? Am I missing something here, or does it have anything to do with the fact that we're using Windows 98? My buddy's using NT, and his works the same. Is there a way around this? TIA, Rob.