V1: Feedrates
17.4 Feedrate control
Basic Functions
1400 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
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 6 further feedrates in the block.
The numerical expansion indicates the bit number of the input that activates the feedrate when changed:
e.g. F7=1000 ; 7 corresponds to input bit 7.
Bits 2 to 7 are permissible for numerical expansion of the feedrate. The programmed values act nonmodally.
The path feedrate programmed under F applies in the next block.
Dwell (sparking out time) and retraction path are programmed under separate addresses in the block:
These addresses apply nonmodally.
Programming axial motion
The axial feedrates are programmed under address FA and remain valid until an input signal is present. They act
modally.
FMA[2,x]=... to FMA[7,x]=... can be used to program up to 6 further feedrates per axis in the block.
The first expression in square brackets indicates the bit number of the input that activates the feedrate when
changed. The second expression indicates the axis to which the feedrate applies.
Example:
Bits 2 to 7 are permissible for the numerical expansion of the axial feedrate. The values programmed under FMA
are active nonmodally. The feedrate programmed under FA applies to the next block.
Dwell (sparking out time) and retraction path can also be defined for a single axis:
The expression in square brackets indicates the axis for which the sparking out time and retraction path apply.
These addresses apply nonmodally.
If feedrates, a sparking out time (dwell) or retraction path are programmed for an axis on account of an external
input, this axis must not be programmed as a POSA axis in this block (positioning axis beyond end of block).
ST=...
dwell (for grinding sparking out time)
SR=...
Retraction path
FMA[3,Y]=1000 ;axial feedrate for Y axis,
;corresponds to input bit 3
STA[x]=...
;dwell (sparking out time), axis-specific
SRA[x]=...
;retraction path, axis-specific
STA[X]=2.5 ;sparking out time 2.5 seconds
SRA[X]=3.5 ;retraction path 3.5 (unit e.g.: mm)
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