Siemens SINUMERIK 802D sl Programming And Operating Manual page 260

Programming
10.5 Special functions
Chamfer CHF or CHR
A linear contour element is inserted between linear and circle contours in any combination.
The edge is broken.
Figure 10-29 Inserting a chamfer with CHF using the example "Between two straight lines"
Figure 10-30 Inserting a chamfer with CHR using the example "Between two straight lines"
Programming examples of chamfer
N5 F...
N10 G1 X... CHF=5
N20 X... Z...
...
N100 G1 X... CHR=2
N110 X... Z...
...
N200 G1 FRC=200 X... CHR=4
N210 X... Z...
260
; Insert chamfer with chamfer length of 5 mm
; Insert chamfer with leg length of 2 mm
; Insert chamfer with feedrate FRC
Programming and Operating Manual, 11/2012, 6FC5398-5CP10-3BA0
Surface grinding