
1.AXIS CONTROL B-63783EN-1/01
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(2) Absolute command
- Rapid traverse and linear interpolation
The absolute coordinates of the end point are identical for all
parallel axes. In other words, if the start points differ, the
amounts of travel on the parallel axes differ.
- Circular interpolation and helical interpolation
Interpolation is performed using the data for the axis that has
the lowest number among the controlled axes and for which
parking is not specified. The same data as the interpolated
data is output for the other parallel axes.
In other words, even for an absolute command, if an axis
starts operating at a position different from that of the axis to
which interpolation is to be applied, the tool moves to a
position other than the specified end point.
- Feedrate calculation
In linear interpolation, a feedrate in parallel operation is calculated for
an axis along which the amount of travel is the longest among all the
parallel axes. The feedrate calculation does not reflect the data for the
other parallel axes.
Limitation
- Synchronization control and twin-table control
Among those parallel axes having the same axis name, that axis having
the lowest controlled-axis number is called the master axis of the
parallel axes.
Those axes other than the master axis are called slave axes.
When parallel axis control and synchronization control are used at the
same time, the following limitations apply.
(1) Synchronization control or twin-table control cannot be applied to
the slave axes of parallel axes.
(2) A slave axis to which synchronization control and twin-table
control are applied cannot serve as the master axis of the parallel
axes.
- Manual operation
In manual operation, even a parallel axis operates independently.
In a manual numeric command, parallel operation is performed in the
same way as in automatic operation.
- Cutter compensation
Cutter compensation cannot independently be applied to each parallel
axis. The same compensation is applied to all parallel axes.