Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 558)

Roughing Cycle Parameters
Chapter 28
28-2
Function
This parameter only applies to the O.D and I.D Roughing routine and the
Rough Facing routine. This parameter sets the default value of “R” for the
roughing cycles. “R” is the distance that the cutting tool is retracted after
each rough cut is made across the parts contour.
The value set here with this parameter is used only when no R word is
programmed in the block that defines the parameters for the
roughing/facing routines. If an R word is programmed in the program
block, then the value set with this parameter is ignored.
Axis Parameter
Number
All [21]
Range
0.00000 in to 393.69685 in
or
0.00000 mm to 9999.90000 mm
Notes
This parameter is a global parameter. The value set here applies to all axes
and processes.
Function
This parameter only applies to the O.D and I.D Roughing Cycle and the
Rough Facing cycle (G71 and G72 lathe G code system C). This
parameter is used as an override for a programmed depth of cut. Typically
the programmer determines the depth of each cut for each pass with these
cycles by programming a “D” word in the calling block. Setting this
parameter at 100% allows the full depth of cut as programmed with a D
word to be made.
When a value other than 100% is entered for this parameter, then that
percentage, times the programmed “D” word, is used as the depth of cut
for each pass of these cycles. Typically this is done when the material
being cut is changed or if a different quality finish is desired, and it is not
convenient to go into the program and alter the value of “D.”
28.2
Roughing Cycles Retract
Amount
28.3
Percent of Cutting Depth