
B-63783EN-1/01 9.SPINDLE FUNCTION
- 847 -
CAUTION
The CNC performs servo-on/off control in position
control for an analog spindle by using the ENB1 and
ENB2 signals. Therefore, to perform the servo-
on/off control in spindle position control as shown in
the timing chart, the spindle control unit must turn
motor excitation on and off according to the ENB1
and ENB2 signals.
ENB2
ENB enable
signal output
Spindle speed analog
voltage output
SVC
ES
ES
SVC
ENB1
Control unit
+10 V max
2mA
Output
impedance
100
Ω
Name Connector/pin
SVC JA8A/7
ES JA8A/5
ENB1 JA8A/8
ENB2 JA8A/9
The ENB1/2 signal is set to 1 when spindle position control is in the
servo-on state, and it is set to 0 when spindle position control is in the
servo-off state.
Timing chart for canceling positioning (sequence patterns 4)
M command
Mzz
Strobe signal
MF
Spindle stop confirmation
signal SPSTPs
Spindle position control
Spindle position control
servo-on
Miscellaneous function
completion signal FIN