
B–64113EN–1/01
1. AXIS CONTROL
98
WARNING
1 Before using the synchronization error check function, set
identical values for the reference positions of the master
and slave axes.
2 To clear the alarm, first increase the maximum
synchronization error set in parameter 8314, then press the
reset key. Next, perform handle operations or other manual
operations so that the machine coordinates agree. Then,
restore the original value in parameter 8314.
3 If an alarm is detected during a synchronous operation, set
the signals indicating that a synchronous operation is in
progress (G138, G140) to off, then follow the procedure for
clearing an alarm.
NOTE
If the synchronization error check function is not used, set
parameter 8314 to 0.
If the synchronization between the positions of the master and slave axes
is lost when the system power is turned off, the function compensates for
the difference between them. After performing a follow–up at power on,
the function sends compensation pulses to the slave axis to adjust its
position such that it agrees with that of the master axis. This function is
enabled only when the slave axis of synchronization control supports the
absolute–position detection function.
This function, however, cannot be used for rotation axes.
WARNING
1 The synchronization compensation function is enabled
after reference position returns have been performed. The
function is not executed if the parameter is set before
reference position returns are performed.
2 The synchronization compensation function is not executed
when the servo alarm is eliminated.
CAUTION
The synchronization deviation is processed as a position
error on the slave axis while at rest. The position error is
displayed as diagnostic data 300, in the same units as used
to detect the error. If the error exceeds the value set in
parameter 8315 (if only one master/slave axis pair is in
sync) or 8325 (if two master/slave axis pair is in sync), servo
alarm 410 is triggered. The alarm can be cleared by
pressing the reset key. As the position error for the slave
axis remains even after the alarm is cleared, however, the
positions must be adjusted.
D Synchronization
compensation function
(M series)