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PCI-1220U User Manual 4
Constant Vector Speed Control
This function performs a constant vector speed. During the interpolation
driving, MCX312 can set a 1.414 times pulse cycle for 2-axis simultane-
ous pulse output that keeps constant speed during driving.
Compare Register and Software Limit
Each axis has two 32-bit compare registers for logical position counter
and real position counter. The comparison result can be read from the sta-
tus registers. The comparison result can be notified by an interrupt signal.
These registers can be also functioned as software limits.
Driving by External Signal
It is possible to control each axis by external signals. The +/- direction
fixed pulse driving and continuous driving can be also performed through
the external signals. This function is used for JOG or teaching modes, and
will share the CPU load.
Input/ Output Signal
Each axis has 2 points of general input signals. Besides, there are ORG
and EZ signals for high-speed near-by home search, home search and z-
phase search during the home returning. Each axis is with 4 output points
for general output.
Servo Motor Feedback Signals
Each axis includes input pins for servo feedback signals such as in-posi-
tioning, close loop positioning control and servo alarm.
Interrupt Signals
Interrupt signals can be generated when: (1) the start/finish of a constant
speed drive during the trapezoidal driving, (2) the end of driving, and (3)
the compare result higher/lower the border-lines of the position counter.
An interrupt signal can be also generated during the interpolation driving.