Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 280)

Jog Parameters
Chapter 8
8-22
Function
This parameter specifies the maximum number of jog retract moves that
the control can retrace. The value set for this parameter applies to the total
number of jog retract moves that may be remembered by the control. This
number is the combined moves on all of the axes.
Refer to chapter 8 of your lathe or mill programming and operation manual
for details on using this feature.
Axis Parameter Number
Single Process Process 1 Process 2
All [331] [20331] [21331]
Range
1 to 15 moves
Notes
If the tool is jogged more than the specified number of moves, the first
move of the return from jog retract is a straight line from the final jog
position to the jog position of the last allowed jog retract.
In jog retract, consecutive jogs in the same axis are considered to be one
move; i.e., 3 or 4 jogs are equal to one jog retract move.
This is a global parameter. The value set here applies to all of the axes.
On Dual Processing controls, this is a per process parameter. The value set
in the parameters applies to all of the axes assigned to that process.
8.5.2
Max Jogs In Retracts