Siemens SINUMERIK 840D sl Programming Manual

Example 2: Axial motion
Program code Comment
POS[A]=300 FA[A]=800 FMA[7,A]=720 FMA[6,A]=640
FMA[5,A]=560 STA[A]=1.5 SRA[A]=0.5
; Feedrate for axis A = 800
; Additional feedrate values for axis A: 720
(input bit 7)
; 640 (input bit 6)
; 560 (input bit 5)
; Axial dwell time: 1.5 s
; Axial retraction: 0.5 mm
Example 3: Multiple operations in one block
Program code Comment
N20 T1 D1 F500 G0 X100 Initial setting
N25 G1 X105 F=20 F7=5 F3=2.5 F2=0.5 ST=1.5 SR=0.5 ; Normal feedrate with F,
; roughing with F7,
; finishing with F3,
; smooth-finishing with F2,
; dwell time 1.5 s,
; retraction path 0.5 mm
...
2.7.11 Non-modal feedrate (FB)
The "Non-modal feedrate" function can be used to define a separate feedrate for a single block.
After this block, the previous modal feedrate is active again.
Syntax
FB=<value>
Meaning
FB: Feedrate for current block only
<VALUE>: The programmed value must be greater than zero.
Values are interpreted based on the active feedrate type:
● G94: feedrate in mm/min or degrees/min
● G95: feedrate in mm/rev or inch/rev
● G96: constant cutting rate
Fundamentals
2.7 Feed control
NC programming
136 Programming Manual, 12/2019, 6FC5398-2EP40-0BA0

Siemens SINUMERIK 840D sl Specifications

General

Control Type	CNC
Number of Axes	Up to 31
Max Number of Channels	10
Interfaces	Ethernet, PROFIBUS, PROFINET, USB
Interpolation	5-axis interpolation
Operating Temperature	0°C to 45°C
Relative Humidity	Up to 95% (non-condensing)
Display	TFT color display, various sizes
Programming Languages	DIN/ISO
Safety Features	Safety Integrated
PLC	Integrated PLC S7-300
Drive Interface	SINAMICS S120
Data Storage	CF card, USB
Operating System	Windows-based