I just spent a day fussing with my CNC, and I can't figure it out. I need some help so I can make a more logical troubleshooting effort tomorrow.
My problem STARTED with an intermittent coil on one X axis motor. The motor would travel one direction, but not the other. I traced this to the connectors at the G202 driver, but I can't tell if its the connectors, me fussing with the connectors, or something intermittent in the G202. When I press on the connector or move the wires just right, the G202 will light up and work.
BUT somehow along the line I've caused another problem- now even when I can get the G202 to the ON state, I can't move the motors connected to it. DRO indicators in Mach2 show movement, but the motors don't turn either direction. Indicator lights on the control box show step pulses, but not direction changes.
In Mach, I checked outputs ports and pins, and these are correct. Mach seems to be working OK. I can't find any settings that are changed- what should I be looking for?
If you can help me to troubleshoot this, it would be great. What I think I need to do is:
1) Check voltage at the parallel port on the X step and dir pins to make sure Mach is sending voltage to the controller
2) Check voltage at the Gecko input to verify input volts (what are these supposed to be- +5V?
3) Check power to the G202s, and compare output of the working motors to the not working one
If the Gecko has power, and input volts, it should produce output, right? If not, I have another Gecko on the way to swap. But my past experience is tht its not likely to be the Gecko. Probably some wiring or Mach 3 SNAFU.
I'm not clear on what to look for in Mach if I don't have output Step/Dir voltage. Other than ports and pins, what controls this?
Thanks for any suggestions. I'm methodical, but I'm running out of what things to check here.
Wayne C
WhiteSalmon, WA