Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 213)

Running a Program
Chapter 7
7-25
ATTENTION: When you perform a program recover, the
control automatically returns the program to the beginning of
the block that was originally interrupted.
The beginning of the block is probably not the point that axis
motion was interrupted.
For absolute linear moves, this causes no problem if the
wheel is still somewhere along the path of the block that
program execution was interrupted while grinding.
In incremental or circular mode, however, if the grinding
wheel is still located at the point that program execution was
interrupted, a restart can damage the part.
If you perform a program recover operation in incremental
mode, it is important that the grinding wheel be at the
location that the interrupted program block began, not the
location that the program was interrupted at.
If wheel radius compensation was active, it will require a
move to re-initialize. This results in a path different than the
originally programmed path. See page 15-17 or 15-27 for
details on entry moves into compensation.
As the control proceeds through the program searching for the entered
character, it is setting active the necessary G, M, S, T, and F words. The
control also establishes the work coordinate system that should be active
for the execution of the selected block including all offsets and rotations to
the work coordinate systems.
You can also use this feature to search into any subprogram or paramacro
that are contained in the main program.
To perform a program restore operation after automatic program execution
has been interrupted, follow these steps:
1. Press the {PRGRAM MANAGE} softkey.
(softkey level 1)
PRGRAM
MANAGE
OFFSET MACRO
PARAM
PRGRAM
CHECK
SYSTEM
SUPORT
FRONT
PANEL
ERROR
MESAGE
PASS-
WORD
SWITCH
LANG