Siemens SINUMERIK 828D Programming Manual page 238

Motion commands
9.7 Helical interpolation (G2/G3, TURN)
Note
and
G2
The circular motion is performed in those axes that are defined by the specification of the
working plane.
Example
Program code
N10 G17 G0 X27.5 Y32.99 Z3
N20 G1 Z-5 F50
N30 G3 X20 Y5 Z-20 I=AC(20) J=AC(20) TURN=2
N40 M30
238
are modal.
G3
Comment
; Approach of the starting
position.
; Feed of the tool.
; Helix with the specifications:
Execute 2 full circles after the
starting position, then travel
to end point.
; End of program.
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
Fundamentals