
1.AXIS CONTROL B-63323EN-1/03
- 186 -
1.9.1 Configuration of Synchronous Control Axes
Master axis and slave axis for synchronous control
An axis used as the reference for synchronous control is referred to as a
master axis (M-axis). An axis along which movement is made in
synchronization with the master axis is referred to as a slave axis.
A synchronous control axis configuration is determined by setting the
axis number of a master axis in parameter No. 7702 for a slave axis.
Synchronous operation and normal operation
Operation that involves a movement along a slave axis in
synchronization with the master axis with synchronous control turned
on is referred to as synchronous operation. Operation that involves
independent movement along the master axis and slave axis
respectively with synchronous control turned off is referred to as
normal operation.
Two methods of operation are supported. One method switches
between synchronous operation and normal operation by using an input
signal. The other method uses synchronous operation at all times. The
method to use is determined by bit 1 (SYN) of parameter No. 1817.
- Switching between synchronous operation and normal operation with an input
signal
When bit 1 (SYN) of parameter No. 1817 is set to 0 for the slave axis,
the SYNCx signal (with x representing a slave axis number) is used to
switch between synchronous operation and normal operation. When
SYNCx = 1, synchronous operation is selected. When SYNCx = 0,
normal operation is selected.
When this switching capability is used, synchronous error
compensation is disabled.
- Using synchronous operation at all times
When bit 1 (SYN) of parameter No. 1817 is set to 1 for the slave axis,
synchronous operation is selected at all times, regardless of the state of
the SYNCx signal.
Axis names of synchronous control axes
The same name or different names may be assigned to the master axis
and slave axis.
- Restrictions imposed when the same axis name is used for the master axis and
slave axis
If the same name is assigned to both the master axis and slave axis,
manual operation alone is possible in normal operation. Automatic
operation and the use of manual numeric commands are disabled.