Siemens SINUMERIK 840D sl Programming Manual page 224

Fundamentals
2.9 Motion commands
SF=... :
Examples
Example 1: Double cylinder thread with 180° starting point offset
Program code
N10 G1 G54 X99 Z10 S500 F100 M3
N20 G33 Z-100 K4
N30 G0 X102
N40 G0 Z10
N50 G1 X99
N60 G33 Z-100 K4 SF=180
N70 G0 X110
N80 G0 Z10
N90 M30
224
Starting point offset (only required for multiple threads)
The starting point offset is specified as an absolute angle position.
Range of values: 0.0000 to 359.999 degrees
Comment
; Work offset, approach starting point, ac-
tivate spindle.
; Cylinder thread: End point in Z.
; Retraction to starting position.
; 2nd cut: Starting point offset 180°.
; Retract tool.
; End of program
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming