Hi Hood
this is a stepper system and using Mach 3 turn.
I'll swap the plugs round and see what happens.
It's odd though that the problem only seems to occur on G1 moves but not G0.
For example:-
Z=3
G1Z4 stops short
G1Z3 returns to Z=3
G0Z4 goes to Z=4
G0Z3 returns to Z=3
I'll post again with the result of swapping the axies.