Siemens Sinumerik 840D sl Programming Manual page 198

Motion commands
10.7 Helical interpolation (G2/G3, TURN)
X Y Z :
I J K :
AR:
TURN= :
AP= :
RP= :
Note
G2 and G3 are modal.
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
198
End point in Cartesian coordinates
Circle center point in Cartesian coordinates
Opening angle
Number of additional circular passes in the range from 0 to 999
Polar angle
Polar radius
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Comment
; Approach the starting posi-
tion.
; Feed of the tool.
; Helix with the specifica-
tions: Execute two full cir-
cles after the starting posi-
tion, then travel to end
point.
; End of program
Fundamentals