Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 316)

Introduction to Programming
Chapter 10
10-38
From Table 10.G, you can see you cannot program a T word without
inadvertently programming both a length offset and a radius/orientation
offset. By not programming one of the offsets, the control assumes an
offset of 00 is programmed and cancels any active offset value. We
recommend always programming a T word followed by all 4 digits thus
making sure you are not inadvertently canceling one offset while trying to
activate another.
Important: Your system installer determines in AMP if all wheel length or
radius/orientation offsets are canceled when the control is reset or an M02,
M30, or M99 end of program block is executed.
Your system installer can also write PAL to automatically select and
activate a wheel length and radius/orientation offset number. See your
system installer’s documentation and the PAL reference manual for details.
END OF CHAPTER