Non-Modal Feedrate Fb - Siemens SINUMERIK 840D Function Manual

Program code
N120 X50 G95 F3 FRC=1
...
M02
Example 2: MD20201 bit 0 = 1; take feedrate 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
N130 Y50
N140 X60
...
M02
5.4.9

Non-modal feedrate FB

Function
The "Non-modal feedrate" function can be used to define a separate feedrate for a single part
program block. After this block, the previous modal path feedrate is active again.
Programming
Syntax:
... FB=<value>
Meaning:
FB:
<value>:
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
Separate feedrate for the current block
The feedrate is interpreted according to the active feedrate type:
● G94, G961, G971:
● G95, G96, G97:
Comment
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
; Modal rounding N130-N140 with F=3 mm/rev
Feedrate in mm/min or inch/min or
Revolutional feedrate in mm/rev or inch/rev
V1: Feedrates
5.4 Feedrate control
/min
o
175