Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 402)

Axis Motion
Chapter 14
14-26
It is possible to change from incremental to absolute or absolute to
incremental modes during polar programming if desired. The axis word is
interpreted by the control in the mode that it was specified in. Mixed
combinations such as angles designated in absolute and radii designated in
incremental are possible.
Example 14.10 is used to illustrate this.
Example 14.10
Changing Between Incremental and Absolute During Polar Moves
N10G01X0Y0Z0F100;
N20G16;
G90X10.Y0.;
G81G91Y30.Z10.R5.L12;
G15;
M30;
Figure 14.14
Bolt Hole Pattern, Results of Example 14.10
10
30
•
+
When programming an arc using polar programming the angle and radius
values still define the end point of the next move. The center point of the
arc must still be designated in the circular block using either the I, J, or K
words or by designating a radius value (see the section 14.1.3 on
circular interpolation).