Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 488)

Angled-Wheel Grinding
Chapter 14
14-20
If you last entered W axis values, those values are transformed over to the
X axis for angled wheel mode. If you last entered X axis values those
values are transformed over to the W axis for non-angled wheel mode.
ATTENTION: Changing the wheel axis angle results in a
change to the programmable zone area. As the wheel axis
approaches 90 degrees, the protected area of the programmable
zone approaches zero. Areas once protected by the
programmable zone can become unprotected when the wheel
angle changes. Additionally areas once accessible can become
unaccessible as the wheel axis angle changes. You must
recalculate and reenter your programmable zones limits any
time the wheel axis angle is changed.
END OF CHAPTER