Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 198)

Section 4B
Connecting the 3-axis Servo Module
4B-52
In AMP the adaptive depth probe is assigned an axis name. Using the axis
monitor page for that axis (see page 15A-35) you can view the current
following error on the adaptive depth probe and the adaptive depth probe
position relative to zero. The probe is zeroed automatically at power up or
through PAL.
END OF SECTION