20. AXIS CONTROL FUNCTION
The simple synchronization control function allows synchronous and
normal operations on two specified axes to be switched, according to an
input signal from the machine.
For a machine with two tool posts that can be independently driven with
different controlled axes, this function enables the operations described
This section describes the operations of a machine having two tool posts,
both of which can be independently operated along the X–axis and
Y–axis. If your machine uses other axes for the same purpose, substitute
the corresponding axis names for X and Y.
Fig. 20.3 (a) Sample Axis Configuration of a Machine on which
the Simple Synchronization Control Function is Executed
Synchronous operation is possible on a machine having two tool posts.
In synchronous operation mode, movement on one axis can be
synchronized with movement specified for another axis. The move
command can be specified for one of the two axes, which is referred to
as the master axis. The other axis, for referred synchronization with the
master axis is maintained, is referred to as the slave axis. If the master axis
is X and the slave axis is Y, synchronous operation on the X–axis (master
axis) and Y–axis (slave axis) are performed according to Xxxxx
commands issued for the master axis.
In synchronous operation mode, a move command specified for the
master axis results in simultaneous operation of the servo motors of the
master and slave axes.
In this mode, synchronization error compensation is not performed. That
is, any positioning error between the two servo motors is not monitored,
nor is the servo motor of the slave axis adjusted to minimize any error.
No synchronization error alarm is output. Automatic operations can be
synchronized, but manual operations cannot.
Normal operation is performed when different workpieces are machined
on different tables. As with normal CNC control, move commands for
the master and slave axes are specified with the addresses of those axes
(X and Y). Move commands for the two axes can be specified in an
1 According to the Xxxxx command programmed for the master axis,
movement is performed along the X–axis, as in normal mode.
D Synchronous operation
D Normal operation