
20.AXIS CONTROL FUNCTIONS PROGRAMMING B-63944EN/02
- 592 -
NOTE
1 During axis synchronous control, a movement based
on the reference position return check (G27), automatic
reference position return (G28), 2nd/3rd/4th reference
position return (G30), or machine coordinate system
selection (G53) command is made as described below
according to the setting of bit 7 (SRF) of parameter No.
8304.
<1> When SRF = 0, the same movement as made
along the master axis is made along the slave
axis.
<2> When SRF = 1, a movement is made along the
slave axis to the specified position independently
of a movement made along the master axis to the
specified position.
2 A command not involving a movement along an axis
such as the workpiece coordinate system setting
command (G92) and local coordinate system setting
command (G52) is set with the master axis according
to the master axis programming.
3 During synchronous operation, the axis-by-axis signals
such as for external deceleration, interlock, and
machine lock are enabled for the master axis only.
During synchronous operation, those signals for the
slave axis are ignored.
4 When switching the synchronization state in a program,
be sure to specify M codes (parameter No. 8337 and
No. 8338) for turning synchronization on and off. By
switching between the input signals SYNCx (G138) and
SYNCJx (G140) from the PMC with the M codes, the
synchronization state can be switched in the program.
5 When controlled axis removal is performed, the
synchronization state is cancelled. When performing
controlled axis removal, perform removal for the master
axis and slave axis at the same time.
6 If a programmed command is specified for the slave
axis during synchronous operation, an alarm (PS0213)
is issued.
A programmed command can be specified for the slave
axis when switching between synchronous operation
and normal operation is set to 0 (with bit 5 (SCA) of
parameter No. 8304 set to 0) to select normal
operation.
7 Axis synchronous control and PMC axis control cannot
be used at the same time.
8 Axis synchronous control cannot be used with an axis
for which three-dimensional coordinate conversion is
enabled.