
B–64113EN–1/01
9. SPINDLE SPEED FUNCTION
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[Classification] Output signal
[Function] Informs absence or presence of spindle output command.
[Output condition] The ENB signal becomes logical 0 when the command output to the
spindle becomes logical 0. Otherwise, the signal is logical 1.
During analog spindle control, S0 may not be able to stop the spindle from
rotating at low speed because of an offset voltage in the spindle motor
speed control amplifier. In such a case, the ENB signal can be used to
provide a condition to determine whether to stop the motor.
The analog spindle interface (JA40) has electric signals (ENB1 and
ENB2) similar to the ENB. These signals work under the same conditions
as with the ENB signal.
The ENB signal can be used also for serial spindle control.
[Classification] Output signal
[Function] The gear select signal specifies a gear stage to the PMC.
[Output condition] For details of this signal, see descriptions on the M type gear selection
method in General.
[Classification] Input signal
[Function] This signal informs the CNC of the gear stage currently selected.
[Output condition] For details of this signal, see descriptions on the T type gear selection
method in General.
Spindle enable signal
ENB <F001#4>
Gear selection signal
GR1O, GR2O, GR3O
<F034#0 to #2>
Gear selection signal
GR1, GR2 <G028#1, #2>