I recently got a DoAll mill with an older Centroid M40 3-axis control. When I try to home it, I get a 411 message _axis full power without motion. If I turn off the bottom Z (-) limit switch via the DIP switch, then everything works fine. It will home, run programs and do everything I ask. I ohmed the switch, and it seems to be fine and working. I then checked wiring, and there does not seem to be any shorts or opens. It had the right voltage (+5VDC). If I turn it back on (via the DIP switch), the above mentioned problems come back.
Any ideas on a fix?