
B–62073E–1/042. INTERFACE BETWEEN CNC AND PMC–NA OR NB
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(6) DI/DO signals
(a) Spindle synchronization signal: SPSYC
[Classification]
Input signal
[Function] Selects the spindle synchronization mode for the serial interface spindle.
[Operation] When the signal is high, the system enters the spindle synchronization mode. When the sig-
nal is low, the system exits the spindle synchronization mode.
(b) Spindle phase synchronization signal: SPPHS
[Classification]
Input signal
[Function] Selects the spindle phase synchronization mode for the serial interface spindle. This signal
is valid when SPSYC is high. SPPHS must be specified after the spindle speed synchroniza-
tion completion signal, MSPSYC is set high. SPPHS is valid only once in the spindle synchro-
nization mode. In the spindle synchronization mode, SPPHS can be validly set on or off only
once. If the system exits the spindle synchronization mode and returns to the mode again,
the signal can be set on or off again.
[Operation] When the signal is high, the system enters the spindle phase synchronization mode. When
the signal is low, the system exits the spindle phase synchronization mode.
(c) Signals for specifying the voltage of the spindle motor: RISGN [#1], RI0 to RI12 [#1]
[Classification]
Input signals
[Function] (1) The signal is used as a conventional signal specifying the voltage of the spindle motor.
(2) The signal is used as the signal specifying the spindle speed for the serial interface
spindle in the spindle synchronization mode. The correspondence between each signal
and the data output to the spindle motor is the same as that when the signal is used as
the conventional signal specifying the voltage of the spindle motor.
(d) Spindle speed synchronization completion signal: MSPSYC
[Classification]
Output signal
[Function] Informs that spindle synchronization (speed) is completed in the serial interface spindle.
[Output Condition]
The signal goes high when:
⋅ The system is in the spindle synchronization mode, the spindles achieve the spindle
speed corresponding to the signal specifying the spindle speed to be detected in syn-
chronization, and the difference between the speeds of the two spindles is less than or
equal to the value specified in parameter 3033.
The signal goes low when:
⋅ The system is in the spindle synchronization mode, but the two spindles do not achieve
the spindle speed corresponding to the signal specifying the spindle speed to be de-
tected in synchronization.
⋅ The system is in the spindle synchronization mode, but the difference between the
speeds of the two spindles is larger than the value specified in parameter 3033.
⋅ The system is not in the spindle synchronization mode.
NOTE The signal is switched from high to low if the value specified in parameter 3033 is exceeded
due to a change in cutting load or other reasons.