
B-63943EN-1/02 11.SPINDLE SPEED FUNCTION
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Spindle stop complete signal SPSTPA<Gn028#6> : First spindle
SPSTPB<Gn402#1> : Second spindle
SPSTPC<Gn402#2> : Third spindle
SPSTPD<Gn402#3> : Fourth spindle
[Classification] Input signal
[Function] After checking that these signals are set to 1, the CNC performs
spindle orientation, spindle positioning, and spindle positioning
cancellation.
- Signals related to gear change
Gear selection signals GR1O,GR2O,GR3O<Fn034#0 to #2>
[Classification] Output signal
[Function] These signals inform the PMC of the selected gear stage.
[Output condition] For information about these signals, see "SPINDLE SPEED
CONTROL".
Gear selection signals GR1, GR2<Gn028#1,#2>
[Classification] Input signal
[Function] These signals inform the CNC of the gear stage currently selected.
[Operation] For information about these signals, see "SPINDLE SPEED
CONTROL".
Clutch/gear signals (series spindle) CTH1A,CTH2A<Gn070#3,Gn070#2> : First spindle
CTH1B,CTH2B<Gn074#3,Gn074#2> : Second spindle
CTH1C,CTH2C<Gn204#3,Gn204#2> : Third spindle
CTH1D,CTH2D<Gn266#3,Gn266#2> : Fourth spindle
See the relevant manual of the serial spindle.
These signals determine the gear parameters (such as the loop gain) to
be used.
Although the gear selection signals for a serial spindle are CTH1 and
CTH2, also input GR1 and GR2. Avoid changing the states of these
signals in the spindle positioning mode.
Relationship between selected gear and spindle gear selection signals
CNC side
Lathe system and machining center
system (with CSST)
Machining center system (with CSST)
Serial spindle side
GR2 GR1 Selected gear GR3O GR2O GR1O Selected gear CTH1 CTH2
0 0 1st gear 0 0 0 1st gear 0 0
0 1 2nd gear 0 1 1 2nd gear 0 1
1 0 3rd gear 1 0 0 3rd gear 1 0
1 1 4th gear 1 1
CSST : Constant Surface Speed Control