Hi Guys,
I'm having the same problem except I'm moving 2.5 times more than I should be! I have just started fiddling about with Mach4 & CNC in general. What I have done so far is connect Mach 4 to a CSMIO/IP-M to a Z axis lifter so I have something physical to put a tape measure against. Some rough measurements 1.8 deg/step, lifter moves approx 7mm per full revolution and driver is set to 2000 steps/rev .... 2000/7 = ~285 steps per unit(mm)?
No matter what I set the counts per unit to in Mach, the physical machine will move 2.5 (exactly) times further than the readout in Mach. i.e if I tell mach to move 50mm the machine moves 125mm, tell it to move 20mm the machine moves 50mm. Cannot get my head around it!
Any help greatly received.
Cheers
Dan