
B–63503EN–1/01
9. SPINDLE SPEED FUNCTION
464
Reference information: The table below indicates the relationship
between the output signals and gear selection.
GR3O GR2O GR1O
1st (low) speed gear × × f
2nd (medium) speed gear × f ×
3rd (high) speed gear f × ×
[Classification] Input signal
[Operation] When T–type gear selection is being used, these signals are used in a PMC
sequence for rigid tapping.
The signals post, to the CNC, information about a spindle gear to be used.
Reference information: The table below shows the relationship
between the output signals and spindle gear
selection.
GR2 GR1
1st (low) speed gear × ×
2nd (medium)
speed gear
× f
3rd (high) speed
gear
f ×
4th (high) speed
gear
f f
[Classification] Input signal
[Operation] When rigid tapping with the second spindle is being performed, the signal
is used in a PMC sequence.
The signal notifies the CNC of spindle gear information when the second
spindle has been selected.
The input signal is related to gear selection as described below.
GR21 1 : The second stage is currently selected as the second spindle gear.
0 : The first stage is currently selected as the second spindle gear.
GR21
1st speed gear ×
2nd speed gear f
Gear selection signals
(input)
GR2, GR1<G028#2, #1>
← In M series rigid tapping, the specifi-
cation of the 4th (high) speed gear
is invalid. If specified, the system
assumes that the 3rd (high) speed
gear has been specified.
Gear selection signal
(input)
GR21<G029#0>
(T series only)