Siemens SINUMERIK 840DE SL - Page 224

SF=... : 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
Examples
Example 1: Double cylinder thread with 180° starting point offset
6WDUWLQJSRLQWr
6WDUWLQJSRLQWr
=
;



Program code Comment
N10 G1 G54 X99 Z10 S500 F100 M3 ; Work offset, approach starting point, ac-
tivate spindle.
N20 G33 Z-100 K4 ; Cylinder thread: End point in Z.
N30 G0 X102 ; Retraction to starting position.
N40 G0 Z10
N50 G1 X99
N60 G33 Z-100 K4 SF=180 ; 2nd cut: Starting point offset 180°.
N70 G0 X110 ; Retract tool.
N80 G0 Z10
N90 M30 ; End of program
Fundamentals
2.9 Motion commands
NC programming
224 Programming Manual, 12/2019, 6FC5398-2EP40-0BA0