I realize this post has been inactive for a while but I am having the same issue as Picengraver was having. I have had my machine up and running on a Compac with XP and worked great. computer quit working so I aquired a Dell with XP and have issues with the parallel port so I have added a port and still no luck. Now I have bought a UC100 and it seems to be working with Mach3 but no motion out of motors. I have tried a new motor driver, no change, New BOB now change. any suggestions?

Same here today.

I ran Mach3 with a Smoothstepper. Worked fine, but did not compensate for backlash.

So I bought an UC100.
No movement of the axis, just the DRO's on screen were moving up and down.

Set the UC100 to 50 got the X and Y  axis moving. The Z-axis won't move, just the DRO responds.

Did anyone find a solution?

Jos
Holland

UPDATE:

The UC100 works now.
Settings are; Max step rate @ 50kHz

Ports and pins;
No parallel port selected.
I had to change the Z-axis Dir & Step both to Low Active
(before only the Dir was selected)

Also the Y-axis change to Dir Low active, to change the direction of movement.
(before it was not selected)

Now all axis run normal.
Why I had the play with the Dir & Step settings I do not know.