Thanks for reply and sorry for delayed response. I have been having computer problems.
The are stepper motors.
What I cant understand is why is mach3 moving the motors without specific instructions.
i tested the output pins on the lpt port and 1, 2, 3, 4, and 13 appear to be active when mac3 diagnostic screen indicates 4, 5, 6, 7 and 8 are active.
What does all this mean? What can I do to identify if the problem is mach3 or elsewhere?
Richard