So I have figured out that the “encoder count” refers to the length of pulse that is being sent to the stepper drivers – some boards need longer pulse lengths. Changing the encoder count for my setup has no noticable effect on the operation of the mill, so I am not too concerned with the setting.
What does have me stymied at the moment is my Z axis – I have tuned the motor, and manual movements are fine and accurate. As soon as I run a program, the Z axis seems to be moving more than it should – it is plunging too deeply into the material.
I don’t think that this has anything to do with tuning, so I will have to explore the Mach 3 menus to figure out exactly what’s happening.
In other exciting CNC news, I am working on getting my Mastercam X install up and running – this should really increase the capability of our machines.