Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 520)

Dresser/Wheel Radius Compensation
Chapter 15
15-32
If the number of non-motion blocks in the compensation mode has not
exceeded a value selected by your system installer in AMP, all of the
program blocks in Example 15.7 produce the same exit move.
The exit of the dresser/wheel for type B radius compensation takes the
shortest possible path to the end-point of the exit move for inside corners
only. For outside corners, the dresser/wheel always remains at least the
radius of the dresser/wheel away from the end-point of the last move in
compensation. You can redefine the start-point using an I and/or K word
as described in this section later. The end-point of the exit move is no
longer offset to the left or right.
Figure 15.25 and Figure 15.26 show examples of typical exit moves using
type B radius compensation. All examples assume the number of
non-motion blocks before the designation of the G40 command has not
exceeded the number allowed as determined by your system installer in
AMP.