B--63003EN--1/02
1. AXIS CONTROL
81
WARNING
1 Before u sing 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
clearinganalarm.
NOTE
If the synchronization error check function is not used, set
parameter 8314 to 0.
If the agreement 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 d iagnostic 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 more than one 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 erro r for
the slave axis remains even after the alarm is cleared,
however, the positions must be adjusted.
D Synchronization
compensation function