The second I plug the cable in, the relay triggers. That's cool. It could be a brake release or whatever That is possibly a function of the active Hi/LO levels around the place, inc on the BoB.
I made all my outputs Active HI so that the effect of a disconnected cable etc was just the same power-down.
This does not cover the motor output signals.
You should also check any use of the Enable outputs from Mach3. Under normal conditions you can happily avoid using any of them.
Tested X and it works for about 5 cycles or less.??
Use the LEDS and see exactly what is happening here.
Tested Y and it works perfectlyGood. You can/should also use this axis to check the drivers and motors for the other axes.
Tested Z and have zero movementIf the Z axis driver and motor check out OK when driven by the functioning Y axis, then the problem may be in the BoB or the Mach config. Guess what? LED time!
Tested A and no matter which direction it's supposed to move, it moves clockwise.OK, Step pulses getting through but not the DIR signal. LED time and check Mach config.
No worries. You are on your way to having a good understanding of the Mach3 signalling, which will ALWAYS be an advantage. You also now have a functioning LED diagnostic tool.
PROGRESS!
Cheers
Roger