Several Feedrate Values In One Block (F, St, Sr, Fma, Sta, Sra) - Siemens SINUMERIK 840D sl Programming Manual

Feed control

7.10 Several feedrate values in one block (F, ST, SR, FMA, STA, SRA)

7.10 Several feedrate values in one block (F, ST, SR, FMA, STA, SRA)
Function
The "Multiple feedrates in one block" function can be used to activate different feedrate
values for an NC block, a dwell time or a retraction motion-synchronously, dependent on
external digital and/or analog inputs.
The HW input signals are combined in one input byte.
Syntax
F2=... to F7=...
ST=...
SR=...
FMA[2,<axis>]=... to FMA[7,<axis>]=...
STA[<axis>]=...
SRA[<axis>]=...
Significance
F2=... to F7=... :
ST=... :
SR=... :
148
The path feedrate is programmed under the
address F and remains valid during the absence
of an input signal.
In addition to the path feedrate, up to 6 further
feedrates can be programmed in the block. The
numerical expansion indicates the bit number of
the input that activates the feedrate when
changed:
Effective: non-modal
Dwell time in s (for grinding technology: sparking-
out time)
Input bit: 1
Effective: non-modal
Retraction path
The unit for the retraction path refers to the
current valid unit of measurement (mm or inch).
Input bit: 0
Effective: non-modal
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
Fundamentals