Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 140)

Zone/Overtravel Parameters
Chapter 6
6-14
Function
Use this parameter to enter the larger machine coordinate value that
determines the location of the software overtravel. Provided that software
overtravels are active, the axis is not permitted to exceed this value.
Axis Parameter
Number
Axis Parameter
Number
(1) [1320] (7) [7320]
(2) [2320] (8) [8320]
(3) [3320] (9) [9320]
(4) [4320] (10) [10320]
(5) [5320] (11) [11320]
(6) [6320] (12) [12320]
Range
Negative Software Overtravel to 2540000.00000 mm
or
Negative Software Overtravel to 100000.00000 inch
The range of this parameter is dependent on the value set for the parameter
“Negative Software Overtravel.”
Notes
This parameter must be set independently for each axis.
6.2.2
Positive Software Overtravel