Siemens SINUMERIK 840D sl Programming Manual page 275

Example 4: Modal rounding to deburr sharp workpiece edges
Program code
...
N30 G1 X... Z... RNDM=2 FRCM=50
N40...
N120 RNDM=0
...
Example 5: Apply technology from following block or previous block
• MD20201 Bit 0 = 0: Derived from following block (default setting!)
Program code
N10 G0 X0 Y0 G17 F100 G94
N20 G1 X10 CHF=2
N30 Y10 CHF=4
N40 X20 CHF=3 FRC=200
N50 RNDM=2 FRCM=50
N60 Y20
N70 X30
N80 Y30 CHF=3 FRC=100
N90 X40
N100 Y40 FRCM=0
N110 S1000 M3
N120 X50 G95 F3 FRC=1
...
M02
• MD20201 Bit 0 = 1: Derived from previous block (recommended setting!)
Program code
N10 G0 X0 Y0 G17 F100 G94
N20 G1 X10 CHF=2
N30 Y10 CHF=4 FRC=120
N40 X20 CHF=3 FRC=200
N50 RNDM=2 FRCM=50
N60 Y20
N70 X30
N80 Y30 CHF=3 FRC=100
N90 X40
N100 Y40 FRCM=0
N110 S1000 M3
N120 X50 CHF=4 G95 F3 FRC=1
Fundamentals
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
9.15 Chamfer, rounding (CHF, CHR, RND, RNDM, FRC, FRCM)
Comment
; Activate modal rounding.
Radius of rounding: 2 mm
Feedrate for rounding: 50 mm/min
; Deactivate modal rounding.
Comment
; Chamfer N20-N30 with F=100 mm/min
; Chamfer N30-N40 with FRC=200 mm/min
; Chamfer N40-N60 with FRCM=50 mm/min
; Modal rounding N60-N70 with FRCM=50 mm/min
; Modal rounding N70-N80 with FRCM=50 mm/min
; Chamfer N80-N90 with FRC=100 mm/min
; Modal rounding N90-N100 with F=100 mm/min
(deselection of FRCM)
; Modal rounding N100-N120 with G95 FRC=1 mm/rev
Comment
; Chamfer N20-N30 with F=100 mm/min
; Chamfer N30-N40 with FRC=120 mm/min
; Chamfer N40-N60 with FRC=200 mm/min
; Modal rounding N60-N70 with FRCM=50 mm/min
; Modal rounding N70-N80 with FRCM=50 mm/min
; Chamfer N80-N90 with FRC=100 mm/min
; Modal rounding N90-N100 with FRCM=50 mm/min
; Modal rounding N100-N120 with F=100 mm/min
; Chamfer N120-N130 with G95 FRC=1 mm/rev
Motion commands
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