4 axis simultaneous mill moves

[MichiganCNC]

Hi -
I have an Acorn 4.64 board and installed the Pro mill software to do simultaneous 4 axis milling (vertical knee mill).
Everything is setup and working, except I'm not getting simultaneous Z movement.
When I program for instance: G00 X1 Y1 Z1 A20 it moves X and Y and A simultaneously but only after those moves have been completed does it do the Z move.
I further noticed that even with a G00 X1 Y1 Z1, it moves the Z only after the X Y simultaneous are completed.
Is there a setting I need to change?
Thanks
Joe

[MichiganCNC]

I think I may have answered my own question.
The simultaneous X Y Z A moves do work but only in G01 not in G00.

[tblough]

G0 rapid move order depends on the direction of the Z move. If the Z component moves in a positive direction, then the Z component is executed first followed by a coordinated XY move.

If the Z move is in the negative direction, then the XY move is executed first then the Z.

[cnckeith]

g0 by definition move Z first , operator manual explains how the g codes work, latest version is here.
https://www.centroidcnc.com/centroid_di ... manual.pdf