Hi

I am having a few issues with the direction that the 4th axis rotates in. The same issues happens with the CAM post as well as manual programming a part.

Say I start from X0.0 Y0.0 A10.0
If I program:
G1 A35.0 F200
G1X10.0
G1A10.0

The 4 axis will rotate to 35 degrees going clockwise, the X axis will move 10mm and then the 4 axis will continue to rotate a further 335 degrees clockwise to get to A10.0, I need it to rotate anti clockwise as I don't want the pocket to extend all the way around the part.

If I program A-10.0 Then the 4 axis will rotate anti clockwise but will rotate to an absolute position of 350.0 degress, so over shooting where I want it to stop by 20 degrees.

If programmed in incremental then all works well.
G1
G91
A25.0 F200
G1 X10.0
A-25.0
G90

The program is a simultaneous pocket on the 4 axis.

The control is a Meldas M3 on a Leadwell MCV760

Thanks

Will