I have a hurco bmc 20 1992 (and im very green).
Here is my problem.
If i put an indicator in the head and zero it on an edge in Y. Then jog the Y axis with the wheel in tenths say in the positive direction, the indicator will read what the screen says. Now when i change direction (turn the wheel the other way) the indicator jumps .002" and the readout does not. as you continue turning both the indicator and the readout show the same amount of movement. Now you stop, as you just turn the wheel in the oposite direction it will do it again. then continue on reading the same distance change as the screen. (you can feel the table jerk if you rest your hand on it when you change the wheel direction) Of course the total distance moved is not close because of the jump at the direction change. The X axis does not do it, and the Z does not either. The problem just started today. Rebooted and no luck the problem is here for good. Has anyone seen this before, or have an idea of what direction i should be looking at for this issue?
thanks
Darren