What kind of motion control do you use? Parallel port, USB port or ethernet? I had that issue when I use a USB motion controller. Long runs the usb port would disconnect and my machine would stop. I have switched to a ethernet motion controller.
Hi Ron, Your math is spot on. I got the same as you. That will get you in the ball park. You will then have to calibrate or fine tune each axis using the axis calibration in mach3
Ok so what is your micro stepping value? 8,16 ? as far as the switches of the switches are at what would be the home position. you can use limit switches for both home and limit. you just have to select it in the ports and pins settings.