Siemens SINUMERIK 840D sl Programming Manual

Feed
Path
Boundary conditions
● The functions for programming the path traversing characteristics apply regardless of the
programmed feedrate characteristic.
● The programmed feedrate characteristic is always absolute regardless of G90 or G91.
● The feed characteristics FLIN and FCUB are active with G93 and G94, however, not with
G95, G96/G961 and G97/G971.
● For active compressor COMP..., and combining several blocks to create a spline segment,
the following applies:
FNORM: The F word of the last block in the group applies to the spline segment.
FLIN: The F word of the last block in the group applies to the spline segment.
The programmed F value applies until the end of the segment and is then
approached linearly.
FCUB: The generated feedrate spline deviates from the programmed end points by an
amount not exceeding the value set in machine data MD20172 $MC_COM‐
PRESS_VELO_TOL.
F=FPO(…,…,…): These blocks are not compressed.
Work preparation
3.14 Path traversing behavior
NC programming
838 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