Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 652)

Miscellaneous Parameters
Chapter 37
37-12
Function
Use this parameter to determine if the control cancels the active tool length
offsets when an M02 or M30 end of program block is executed.
Yes -- Selecting a value of Yes for this parameter causes the control to
cancel all tool length offsets that are active when an M02 or M30 block is
executed.
No -- Setting a value of No for this parameter causes the control to keep the
currently active tool length offsets active even after an M02 or M30 code.
ATTENTION: If this parameter is set as Yes, tool length
offsets are cancelled when an M02 or M30 is executed. At that
point, any active programmable zones will restrict axis motion
based on the position of the tool gauge point rather than the tool
tip. This may cause an undesired machine “crash” with some
fixture that would normally have been protected by a
programmable zone.
Axis Parameter
Number
All [85]
Range
Selection Result
(a) Yes
(b) No
Notes
This is a global parameter; the value set here applies to all axes
and processes.
This parameter has no effect on the cutter compensation and TTRC
features. Cutter compensation and TTRC are always canceled when a M02
or M30 code is read by the control.
37.12
Cancel Tool Offsets on
M02/M30