Siemens SINUMERIK 840D sl Programming Manual page 456

Path traversing behavior
10.2 Feedrate characteristic (FNORM, FLIN, FCUB, FPO)
Supplementary 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
Feedrate characteristic FLIN and FCUB are active with
G93
FLIN
G95
Active compressor COMPON
With an active compressor
form a spline segment:
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_COMPRESS_VELO_TOL.
F=FPO(...,...,...)
These blocks are not compressed.
456
and .
G94
and is not active with
FCUB
, and
G96/G961 G97/G971
.
the following applies when several blocks are joined to
COMPON
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
or .
G90 G91
Job Planning