Siemens SINUMERIK 840D sl Programming Manual page 836

Work preparation
3.14 Path traversing behavior
FLIN
The feedrate characteristic is approached linearly from the current feedrate value to the
programmed F value until the end of the block.
Example:
N30 F1400 FLIN X50
FCUB
The feedrate is approached according to a cubic characteristic from the current feedrate value
to the programmed F value until the end of the block. The control uses splines to connect all the
836
Feed
Feed
Path
Path
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming