Quote Originally Posted by JAZZCNC View Post
If that case you have been lucky and set MS to same as old setup (you can pick my lottery numbers)
Edit: No your probably not lucky, obviously it will go to the same point because the Home switch stops it and sets the zero. If you tell it to move say 20mm does it move 20mm.?
Sorry I didn't explain that too well, after homing the machine it went to the work datum ie G55 0,0,0 (machine position X-355, Y-130 and Z-45}. I was assuing that as none of the Mach3 settings had changed all would be good.

Thanks for the explnation and I get the general idea - the "steps per" on the current setup is <Steps0>31.50619418</Steps0> guessing maybe imperial pitch lead screws.

I am hoping to have all the parts for the retro-fit by the end of next week (the toroidal transformer may be later as they say This was only ordered today! It takes 2/3 days for us to wind the order.) Anyway I can hopefully forget any serial port imitations when the new motion controller is installed. Changing the wiring on the Y and Z steppers is going to be a bitch if they are wired the same as the X axis.

Meanwhile I will set a job running tomorrow and start working out the layout of the new parts and how to get them in the control box.