NX Controllers & IR
Interesting observation today which I can't say I've seen on NI controllers, maybe they do this too and I've just never noticed. If your trigger a channel on an IR port with out a connected flasher the LED for that port flashes for about 5 seconds and with a flasher connected it acts normal. I wast testing some code and just wanted to observe the front LED on the controller to observe its action but didn't have a flasher connected since I didn't have the device to be controlled on hand and didn't think it mattered. Low and behold I was dumb founded to see the way it acted, trying everything I could think of, TO, CH, SP, changing CTON/CTOF times, etc so I would observe just a single pulse of the LED and nothing worked. Finally I thought maybe it's an error message since there was no connected flasher, no load or voltage returned and sure enough that's what it was. For a while I was feeling pretty dumb, thinking this IR was kicking my a$$ which I guess it was but for different reasons.