Siemens SINUMERIK 828D Programming Manual page 150

Feed control
7.10 Several feedrate values in one block (F, ST, SR, FMA, STA, SRA)
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 (
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.
150
:
:
:
or value) or path feedrate (
FA FMA
The axial feedrate is programmed under the
address and remains valid during the
FA
absence of an input signal.
In addition to the axial feedrate
further feedrates per axis can be
programmed in the block with
parameter indicates the bit number of the
input and the second the axis for which the
feedrate is to apply.
Effective: non-modal
Axial dwell time in s (for grinding technology:
sparking-out time)
Input bit: 1
Effective: non-modal
Axial retraction path
Input bit: 0
Effective: non-modal
value) corresponds to 100% feedrate.
F
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
up to 6
FA
. The first
FMA
Fundamentals