Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 204)

Running a Program
Chapter 7
7-28
CAUTION: When you exit a program restart operation (search
with memory), M- and S-codes are sent to PAL. If, during
normal execution, that program activated a spindle,
mid-program start may also start it.
4. Press the
{EXIT}
softkey if the block selected is the block to begin
program execution from. If it not the desired block, it will be
necessary to disable the program or perform a search with memory
operation to locate the desired block manually.
(softkey level 3)
EXEC QUIT EXIT
When the
{CYCLE START}
button is pressed the control resumes program
execution from the block selected with the program re-start feature.
Use the jog retract feature to allow for inspection or change of the cutting
tool during automatic program execution. It allows the cutting tool to be
jogged from the workpiece in multiple steps, and then returned to the
workpiece automatically by having the control retrace the jogging steps
that were used.
The control remembers up to 15 jog retract moves. The actual number of
moves retained can vary from 0 to 15 as determined by an AMP parameter
set by your system installer. The control returns the tool along the jog
retract path at a feedrate specified in AMP.
Important: If the same axis is used in succession during a jog retract
operation, the control assumes that only one jog retract move has been
executed on that axis.
Only simple single axes jog moves can be performed during the jog retract
function. You cannot perform multiple axis jogs, arbitrary angle jogs and
jogging offset.
Tool offsets can be changed at any time during jog retract. See page
NO TAG. The control does not make these offsets active until the
execution of the first block after the tool has been returned from jog
retract.
7.9
Jog Retract