
B–62073E–1/042. INTERFACE BETWEEN CNC AND PMC–NA OR NB
– 220 –
(the velocity integrating control function must be invalidated) after the two spindles are me-
chanically connected to each other as described above.
(7) Sample sequences
(a) While spindle 1 is rotating, spindle 2 is accelerated to be synchronized with spindle 1. Then the
spindles are controlled to be in the same phase. The spindle speed to be detected in synchronization
is changed, and the spindles synchronously are accelerated or decelerated.
RPM
Synchronization
speed rpm A
Synchronization
speed rpm B
Spindle 1
Spindle 2
Phasing
Acceleration/Deceleration
for Synchronization
Time
Spindle Synchronization
Control Signal
Spindle Synchronization Speed
Command Signal
Spindle Phase Synchronization Control Signal
Spindle Synchronization Speed Control Complete signal
Spindle Phase Synchronization Control Complete signal
(2)
(3)
(4)
(1)
RPM A
RPM B
(1)
(1) The signal specifying the spindle speed to be detected in synchronization is specified, and the
spindle synchronization signal, SPSYC, is set high.
(2) The system waits until the spindle speed synchronization completion signal, MSPSYC, goes
high.
(3) The spindle phase synchronization signal,SPPHS, is set high.
(4) The system waits until the spindle phase synchronization completion signal, MSPPHS, goes
high.
NOTE After SPPHS is entered, MSPSYC is set low. MSPSYC goes high again when spindle phase
synchronization is completed.