Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 570)

Cylindrical/Virtual C Parameters
Chapter 30
30-6
Function
This parameter specifies the cylindrical interpolation feed axis coordinate
that corresponds to the center of the cylindrical interpolation rotary axis.
This coordinate is used to align the feed axis with the center-line of the
rotary axis.
Important: The center of the cylindrical interpolation rotary axis must
coincide with the center of the cylindrical workpiece.
When cylindrical interpolation is activated, the control moves the mill tool
along the feed axis to the feed axis coordinate specified by this parameter.
This aligns the feed axis with the center-line of the rotary axis. The control
then moves the tool along the feed axis to the radius specified by the R
parameter in the G16.1 block.
Parameter Parameter Number
Single Process Process 1 Process 2
Rotary Center Feed Coordinate [235] [20235] [21235]
Range
--100000.00000 to 100000.00000 in.
or
--2540000.00000 to 2540000.00000 mm
Notes
This parameter is used for mill controls only. For dual--processing
controls, this is a per process parameter. The value set with this parameter
applies to all of the axes assigned to that process.
This feature is not available on the 9/230 control.
30.6
Rotary Center Feed
Coordinate