
20. AXES CONTROL
B–63682EN/01
NC FUNCTION
140
The traveling command of master axis is given to two motors of master
and slave axes in a simple synchronous control. However, no
synchronous error compensation or synchronous error alarm is detected
for constantly detecting the position deviation of the master and slave
axes to compensate the deviation.
Simple synchronous operation is allowed in the automatic operation and
in the manual operation such as manual continuous feed, manual handle
feed, incremental feed, or manual reference point return.
In the manual reference point return, the master and slave axes similarly
move until the deceleration operation is performed. After that, the
detection of grid is performed independently.
The pitch error and backlash compensation are independently performed
for the master and slave axes.
An input signal from PMC can be select whether the slave axis traveling
is carried out based on the traveling command for that axis as in normal
case or whether the slave axis traveling is carried out while synchronizing
with the traveling of the master axis.
This function usually checks position deviation amount during motion.
If the amount exceeds the parameter set ”feed stop position deviation
amount”, pulse distribution and acceleration/deceleration control is
stopped for the while exceeding, and move command to the positioning
control circuit is stopped.
The overshoot at rapid feed acceleration is thus kept to a minimum.
Feed stop
Speed
Time
Specified speed
Actual speed
20.6
SIMPLE
SYNCHRONOUS
CONTROL
20.7
FEED STOP