Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 442)

Power-up G-code Parameters
Chapter 19
19-10
Function
This parameter selects the default work coordinate system. It determines
the work coordinate system that is activated at power-up, control reset, or
when a G92.1 is programmed. The default work coordinate system may
also be be activated when the control executes an end-of-program block
(M02/M30) if the the value of parameter Reset Coord Offsets on
M02/M30 is “yes.”
Axis Parameter Number
Single Process Process 1 Process 2
All [15] [20015] [21015]
Range
Selection Result Selection Result
(a) None (f) G58
(b) G54 (g) G59.1
(c) G55 (h) G59.2
(d) G56 (i) G59.3
(e) G57
Notes
This is a global parameter. The value set here applies to all axes.
For 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.
19.9
PTO Work Coordinate