Siemens SINUMERIK 840D sl Programming Manual page 256

Fundamentals
2.10 Tool radius compensation
Program code
N105 G96 S210 M3
N110 G0 G42 X50 Z-60 M8
N115 G1 Z-70 F0.12
N120 G2 X50 Z-80 I6.245 K-5
N125 G0 G40 X100 Z50 M9
N130 G0 G53 X280 Z380 D0 M5
N135 M30
Further information
The control requires the following information in order to calculate the tool paths:
● Tool no. (T...), cutting edge no. (D...)
● Machining direction (G41/G42)
● Working plane (G17/G18/G19)
Tool no. (T...), cutting edge no. (D...)
The distance between tool path and workpiece contour is calculated from the milling cutter radii
or cutting edge radii and the specifications of the cutting edge position.
Machining direction (G41/G42)
From this information, the control detects the direction in which the tool path is to be displaced.
Note
A negative correction value has the same significance as a change of offset side (G41 ↔ G42).
Working plane (G17/G18/G19)
256
Comment
; Select constant cutting rate.
; Set tool with tool radius compensation.
; Turn diameter 50.
; Turn radius 8.
; Retract tool and deselect tool radius
compensation.
; Approach tool change location.
; End of program.
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming