Hey Woodspinner,
Nope, the shafts are only vibrating as much as the motor housing.
So here is what I know:
The correct port address is in place
The port is outputting pulses
The motors are being driven by pulses
The pulse train may not be large enough to do the work - Caution - only using a DMM! Pulses reaches 3.38V on DC and about 6V on AC
The pulse train is always positive on A+ to A- and on B+ to B-
Lower Slow Jog Rate causes about the same effect as dropping the Steps per or Velocity, the motors whine or grind
When whining, no shaft movement occurs and I can make the whining go so high pitch that I can't hear it
When grinding, the shafts move in large jumps but not in a coordinated manor
The DC supply outputs 24.08V
The X axis output is connected to the X motor, Y to Y and Z to Z per Mach 3 setup. This checks out with the motors.
Hood and Tweakie have been trying to help and now WoodSpinner has joined the group of helpers.