Siemens SINUMERIK 840DE Programming Manual page 253

N230 X10
N240 DO $R6=$AC_TIME
N250 X10 A10
N260 DO $R7=$AC_TIME
N270 A10
N280 DO $R8=$AC_TIME
N290 X0.001 A10
N300 FGREF[A]=360/(2*$PI)
N310 DO $R9=$AC_TIME
N320 X0.001 A10
N330 M30
Example of traversing synchronized axes with limit speed FL
The path velocity of the path axes is reduced if the synchronized axis reaches the limit
speed.
Example, Z is a synchronized axis:
N10 G0 X0 Y0
N20 FGROUP(X)
N30 G1 X1000 Y1000 G94 F1000 FL[Y]=500
N40 Z-50
One FL value can be programmed per axis. The axis identifiers of the basic coordinate
system must be used (channel axes or geometry axes).
Example of helical interpolation
Path axes X and Y traverse with the programmed feedrate, the infeed axis Z is a
synchronized axis.
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Feedrate Control and Spindle Motion
7.1 Feedrate (G93, G94, G95 or F..., FGROUP, FGREF)
;Feedrate=2540 mm/min, path dist.=254 mm, R5=approx.
6 s
;Feedrate=2540 mm/min, path dist.=254.2 mm,
R6=approx. 6 s
;Feedrate=100 degrees/min, path dist.=10 degrees,
R7=approx. 6 s
;Feedrate=2540 mm/min, path dist.=10 mm, R8=approx.
0.288 s
;1 degree=1 inch above the effective radius
;Feedrate=2540 mm/min, path dist.=254 mm, R9=approx.
6 s
7-3