Feed Control - Siemens SINUMERIK 828D Programming Manual

Feed control

7.1 Feedrate (G93, G94, G95, F, FGROUP, FL, FGREF)
Examples
Example 1: Mode of operation of FGROUP
The following example is intended to demonstrate the effect of
feedrate. The variable
used in synchronized actions.
Program code
N100 G0 X0 A0
N110 FGROUP(X,A)
N120 G91 G1 G710 F100
N130 DO $R1=$AC_TIME
N140 X10
N150 DO $R2=$AC_TIME
N160 X10 A10
N170 DO $R3=$AC_TIME
N180 A10
N190 DO $R4=$AC_TIME
N200 X0.001 A10
N210 G700 F100
N220 DO $R5=$AC_TIME
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
112
contains the time of the block start in seconds. It can only be
$AC_TIME
Comment
; Feedrate = 100 mm/min or 100 degrees/min
; Feedrate = 100 mm/min, path = 10 mm, R1
= approx. 6 s
; Feedrate = 100 mm/min, path = 14.14 mm, R2
= approx. 8 s
; Feedrate = 100 degrees/min, path = 10 degrees, R3
= approx. 6 s
; Feedrate = 100 mm/min, path = 10 mm, R4
= approx. 6 s
; Feedrate = 2540 mm/min or 100 degrees/min
; Feedrate = 2540 mm/min, path = 254 mm, R5
= approx. 6 s
; Feedrate = 2540 mm/min, path = 254.2 mm, R6
= approx. 6 s
; Feedrate = 100 degrees/min, path = 10 degrees, R7
= approx. 6 s
; Feedrate = 2540 mm/min, path = 10 mm, R8
= approx. 0.288 s
; Set 1 degree = 1 inch via the effective radius.
; Feedrate = 2540 mm/min, path = 254 mm, R9
= approx. 6 s
on the path and path
FGROUP
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
Fundamentals