Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 687)

Skip, Gauge, and Probing Cycles
Chapter 27
27-13
Figure 27.4
Parameters and Motion Paths for G38.1 Probing Cycle
+Y
X I
E feedrate E feedrate
E feedrate
E feedrate
F feedrate
F feedrate
1st hit
2nd hit
Work piece or fixture
R
D
D
Y
+X
Point where
G38.1 block
is executed
J
D
D
Parameters R, D, E, and F can be entered in 3 ways:
The system installer may have entered them in AMP, in which case they
will always be available and need not be programmed in the G38.1
block. Refer to the documentation provided by your system installer.
They may be entered or changed through the probing parameters table
described in section 27.5. If entered in the table, they need not be
programmed in the G38.1 block. The table value will supersede any
values entered in AMP.
They may be programmed directly in the G38.1 block. Values entered
for these parameters in the G38.1 block supercede both AMP values and
probe parameter table values.