Siemens SINUMERIK 802D sl Programming And Operating Manual page 295

Note
If feedrates, dwell time or return path are programmed for an axis on account of an external
input, this axis must in this block must not be programmed as POSA axis (positioning axis
over multiple blocks).
Look Ahead is also active for multiple feedrates in one block. In this way, the current
feedrate is restricted by the Look Ahead value.
Example of programming path motion
The path feed is programmed under the address F and remains valid until an input signal is
present. The numerical expansion indicates the bit number of the input that activates the
feedrate when changed:
F3=20
F2=5
ST=1
SR=0.5
Example of programming axial motion
The axial path feed is programmed under the address FA and remains valid until an input
signal is present.
FMA[3,x]= to FMA[2,x]= can be used to program up to 2 further feeds per axis in the block.
The first expression in the square brackets indicates the bit number of the input; the second
the axis for which the feedrate is to apply
FMA[3, x]=1000
Example of axial dwell time and return path
Dwell time and return path are programmed under the following additional addresses:
STA[x]=...
SRA[x]=...
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.
Surface grinding
Programming and Operating Manual, 11/2012, 6FC5398-5CP10-3BA0
10.13 Multiple feedrate values in one block
;3 corresponds to input bit 3
;2 corresponds to input bit 2
;Dwell time (s) input bit 1
;Return path (mm) input bit 0
;Axial feedrate with the value 1000 for X axis, 3
;corresponds to input bit 3
;Axial dwell time (s) input bit 1
;Axial return path (mm) input bit 0
Programming
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