I understand what are u talking about, but unfortunately that's not the problem in my case. Imagin 4 independent axis. 2 are moving wire in X plane, and the other 2 in the Y plane. The home switches are used to home each axis so the wire is set parallel to the X and Y plane (the front edge of the table) But the home switches of the each axis are not quite at proper position, and after homing the wire is a little out of the parallel position to the edge of the table. I was thinking to measure these offsets and enter the values in the home off boxes, so when I hit GO TO Z after homing, wire takes desired position. But there's the problem. I set offsets for example -2, 1, 1 and 3 mm to the X, Y, A & B, and after homing and GO TO Z, X and A move 2mm each and Y and B move -1 mm, but A and B should move 1 and -3 mm. So after this routine, wire moves by X and Y plane but again doesn't take the parallel position...
Regards,
Dejan