I have just fitted mach3 to a engraver now I am having problems getting the homing set up. I have omron sensors controlling a relay for each axis. I have programed it as inputs 10 - 12. When I switch to the diagnostic screen I can see the limits operating correctly, but the steppers won't stop.
If I set up a zero position I can get it to go back to zero, but if I go to home everything moves in the right direction but just won't stop.

The other issue I have is that z axis moves last not first, can this be changed? Or is the only way to change the drive connection?
They must be correct because when I tune the motors they all are in correct order and move in the correct direction?

Bse

Sounds like you only have the Home switch settings set in Mach and not the Limits.
If you set a safe Z then when you do a Go to Zero the  Z wll move up  first then X and Y then Z will move back down.
Hood