Siemens SINUMERIK 840D Function Manual page 167

MD21220 $MC_MULTFEED_ASSIGN_FASTIN, bit 16 ... 31
Figure 5-10 Signal assignment for the "Multiple feedrate values in one block" function
The assignment of the digital input bytes and parameterization of the comparators are
described in:
Further information:
Function Manual Basic Functions; Digital and analog NC I/O
Programming
Path motion
The path feedrate is programmed under the address F and remains valid until an input signal
is present. This value acts modally.
F2=... to F7=... can be used in addition to the path feedrate to program up to six further
feedrates in the block. The numerical expansion indicates the bit number of the input that
activates the feedrate when changed:
Example:
F7=1000
The programmed values act non-modally. The path feedrate programmed under F applies in
the next block.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
;7 corresponds to input bit 7
V1: Feedrates
5.4 Feedrate control
167