Originally Posted by
DAB_Design
I played around with it toady. Had everything wired up and just laying on the bench. Wired 2 switches NC as you stated. When Mach2 was started, it imediately gave a "limit switch triggered". It wouldn't clear. So I pressed and held one of the switches, and was able to clear it. As soon as I let go though, I got the same alert.
So I thought that maybe I was right the first time (one switch NC the other NO). This had no affect. When I tried to home the axis, pressing and releasing the switch did nothing.
So um....any ideas on what may be wrong? I read something in the manual about active hi and active lo, but did not see any settings in the config screen that I could change for this (on the input pins tab).
The manual says "...they need to be connected so the signal is a logic "1" if either switch is operated (i.e. the logical OR function)"...."If they have normally closed contacts and are wired in series as shown, then they will give an Active Hi signal"