Siemens SINUMERIK 840Di sl Programming Manual page 347

Example 1 turning
N20 T1 D1
N30 G0 X100 Z20
N40 G42 X20 Z1
N50 G1 Z-20 F0.2
Only tool length compensation is activated in block N20. X100 Z20 is approached without
compensation in block N30.
In block N40, the radius compensation is activated, point X20/Z1 is approached with
compensation.
Fundamentals
Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
8.8 Tool radius compensation (G40, G41, G42)
X
20
Z
20 1
Tool offsets
347