Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 189)

Running a Program
Chapter 7
7-13
Important: Incremental moves that occur during a program search with
recall operation, are always referenced from the last known absolute
position in the part program. If no absolute position is specified in the
searched part program blocks, the control will use the current axis position
as the start point for incremental moves.
When a search with recall is performed, the control finds a character string
or sequence number in a specific block for execution to begin from. Note
that execution always begins from the beginning of the block, regardless of
the location in the block of the searched string or sequence number. This
searched block must be a block that would normally be executed during the
full programs execution (a block that would be skipped by some means
such as a jump, etc., cannot be searched for).
The program search with recall feature maybe used to search into any
subprograms or paramacros that may be contained in the main program.
This is provided of course, that the searched block is in the path of normal
program execution.
Important: The search with recall feature will not:
send PAL nonmodal M--codes including user--defined groups 0 -- 3,
group 4, group 5, and group 6 M--codes.
on dual process systems, halt execution for synchronization codes.
read from or write paramacro variables to PAL
on dual process systems, shared paramacro variables between processes
may not be evaluated as desired depending on the status of the other
process.
Important: This feature will not search into any cycle that calls a set of
profile blocks (typically specified with the P-- and Q--word in the cycle).
Refer to the description of your cycle for details on profile blocks.
send to PAL gear change requests based on spindle speed