Siemens SINUMERIK 840D sl Programming Manual page 223

Note
CIP is modal.
Input in absolute and incremental dimensions
The G90/G91 defaults for absolute or incremental dimensions are valid for the intermediate
and circle end points.
With G91, the circle starting point is used as the reference for the intermediate point and end
point.
Examples
Example 1: Milling
Program code
N10 G0 G90 X130 Y60 S800 M3
N20 G17 G1 Z-2
N30 CIP X80 Y120 Z-10
I1= IC(-85.35)J1=IC(-35.35) K1=-6
N40 M30
Fundamentals
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
F100
9.6 Circular interpolation
In order to machine an inclined circular
groove, a circle is described by specifying
the intermediate point with three
interpolation parameters, and the end point
with 3 coordinates.
Comment
; Approach starting point.
; Feed of the tool.
; Circle end point and intermediate
point.
; Coordinates for all 3 geometry axes.
; End of program.
Motion commands
223