Siemens SINUMERIK 840D sl Programming Manual page 149

FMA[2,<axis>]=... to
FMA[7,<axis>]=... :
STA[<axis>]=... :
SRA[<axis>]=... :
Note
If input bit 1 is activated for the dwell time or bit 0 for the return path, the distance to go for the
path axes or the relevant single axes is deleted and the dwell time or return started.
Note
The axial feedrate (FA or FMA value) or path feedrate (F value) corresponds to 100%
feedrate. The "Multiple feedrate values in one block" function can be used to achieve
feedrates smaller than or equal to the axial feedrate or path feedrate.
Note
If feedrates, dwell time or return path are programmed for an axis on account of an external
input, this axis must not be programmed as POSA axis (positioning axis over multiple blocks)
in this block.
Note
Look Ahead is also active for multiple feedrates in one block. In this way, the current feedrate
is restricted by the Look Ahead value.
Fundamentals
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
7.10 Several feedrate values in one block (F, ST, SR, FMA, STA, SRA)
The axial feedrate is programmed under the
address FA and remains valid during the absence
of an input signal.
In addition to the axial feedrate FA up to 6 further
feedrates per axis can be programmed in the
block with FMA. The first parameter indicates the
bit number of the input and the second the axis for
which the feedrate is to apply.
Effective:
Axial dwell time in s (for grinding technology:
sparking-out time)
Input bit:
Effective:
Axial retraction path
Input bit:
Effective:
Feed control
non-modal
1
non-modal
0
non-modal
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