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General Mach Discussion / Home switch stopped working...

« on: February 15, 2011, 05:55:17 PM »

I've had my machine up and running for a couple of weeks now, this is the first problem I've had with the home switches. I took the motors off to re-square the gantry and when I put it back together I hit the Ref All to zero everything out for a test run and the X (I have dual driven A slaved to X, the A seems fine) kept right on going past the home switch.

I am running Mach3 (licensed). I have the switches enabled in the Homing/Limits screen. The LED on the diagnostic page shows it working on the X and A axes. I enabled the switches as limit switches as well, but that still didn't help.

I'm not sure what could be going on here? I did switch out the screens, but I switched them back to standard and that didn't help.

I can't think of anything I changed today that would have made it do this, it was working fine yesterday afternoon. The only thing I've changed about that particular switch in the past few days was that I used 1 of the 2 free wires (it is 4 wire shielded with a bare ground) as a ground to the frame. Could this be causing noise/bounce issues? I'm not sure why they wouldn't have manifested right away if that is the case...


Thanks!