Siemens sinumerik 840d Programming Manual page 329

08.97
9
840D 840D
NCU 571 NCU 572
NCU 573
Programming example
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
 Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
9.5 Feed characteristic, FNORM, FLIN, FCUB, FPO
840Di
Path Traversing Behavior
Feedrate
5000
4000
3000
2000
1000
N N N N N N N
1 2 3 4 5 6 7
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
9
Path
N N N N N N N N
8 9 10 11 12 13 15
14
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