Siemens SINUMERIK 840D sl Programming Manual page 404

Path traversing behavior
9.5 Feedrate response (FNORM, FLIN, FCUB, FPO)
Example of various feed profiles
This example shows you the programming and graphic representation of various feed
profiles.
N1 F1000 FNORM G1 X8 G91 G64
N2 F2000 X7
N3 F=FPO(4000, 6000, -4000)
N4 X6
N5 F3000 FLIN X5
N6 F2000 X8
N7 X5
N8 F1000 FNORM X5
N9 F1400 FCUB X8
N10 F2200 X6
N11 F3900 X7
N12 F4600 X7
N13 F4900 X5
N14 FNORM X5
N15 X20
FNORM
The feed address F defines the path feed as a constant value according to DIN 66025.
Please refer to Programming Manual "Fundamentals" for more detailed information on this
subject.
9-38
;Constant feed profile, incremental dimensioning
;Step change in setpoint velocity
;Feed profile via polynomial with feed 4000 at
;block end
;Polynomial feed 4000 applies as modal value
;Linear feed profile
;Linear feed profile
;Linear feed applies as modal value
;Constant feed profile with abrupt change in
;acceleration rate
;All subsequent, non-modally programmed F values
;are connected via splines
;Deactivate spline profile
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
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