Siemens SINUMERIK 828D Programming Manual page 115

Note
If the path lengths vary greatly from block to block, a new
block with
degrees/min.
Feedrate for synchronized axes
The feedrate programmed under address
block but not to the synchronized axes. The synchronized axes are controlled such that they
require the same time for their path as the path axes, and all axes reach their end point at
the same time.
Limit velocity for synchronized axes (FL)
The
absence of a programmed
assignment to MD (MD36200 $MA_AX_VELO_LIMIT).
Traverse path axis as synchronized axis (FGROUP)
FGROUP
synchronized axis. In helical interpolation, for example, it is possible to define that only two
geometry axes, X and Y, are to be traversed at the programmed feedrate. The infeed axis Z
is the synchronized axis in this case.
Example:
Fundamentals
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
. When machining with rotary axes, the feedrate can also be specified in
G93
command can be used to program a limit velocity for synchronized axes. In the
FL
is used to define whether a path axis should be traversed with path feedrate or as a
FGROUP(X,Y)
7.1 Feedrate (G93, G94, G95, F, FGROUP, FL, FGREF)
applies to all the path axes programmed in a
F
, the rapid traverse velocity applies.
FL
value should be specified in each
F
is deselected by
FL
Feed control
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