cnc 3040 and mach3 problems

[EddyCurrent]

native units inches....steps per 12800...velocity 1999.8....acceleration 200....steps pulse10...dr pulse 3....3 axis all in one board hope this helps..john..

From a similar machine manual they have it set to 400 steps per (that's for a metric machine)
It had 1404 trapezoidal screws, microstepping likely set to 8, motors were 1.8deg.

step per = "The number of steps Mach3 must send for one unit of movement"

So for a metric machine one unit of movement = 1 mm;

a 1.8 deg motor has 360 / 1.8 = 200 steps per rev.
with microstepping set to 8, 200 x 8 = 1600 steps per rev
with a screw pitch of 4mm, 1mm movement = 1/4 turn
1600 x 0.25 = 400 steps per

So for an imperial machine one unit of movement = 1 inch;

a 1.8 deg motor has 360 / 1.8 = 200 steps per rev.
with microstepping set to 8, 200 x 8 = 1600 steps per rev
with a screw pitch of 4mm, one inch movement = 25.4/4 = 6.35 turns
1600 x 6.35 = 10160 steps per

All of that assumes a 1:1 ratio between motor and leadscrew