Fanuc Series 15i/150i-MA (Programming) Operators Manual

19.AXIS CONTROL FUNCTIONS PROGRAMMING B-63324EN/03
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19.6 PARALLEL AXIS CONTROL
When a machine having two or more heads or tables is used to
simultaneously machine two or more identical workpieces, parallel
operation is executed. In parallel operation, the move command
specified for a programmed axis simultaneously controls two or more
control axes having the same name.
Either the move command specified for one programmed axis or the
command of one address simultaneously controls multiple axes in
parallel. These axes are called parallel axes.
This function can be used when the automatic or MDI operation is
executed or when the manual numerical command is specified. This
function cannot be used in normal manual operation. If this function is
attempted in normal manual operation, the control axes are operated
independently.
In parallel operation, the control axes represented by a single
programmed axis are generally operated in a specified manner. When
an external signal is used, one or more of the parallel axes can be
selected and operated in a different manner (parking).
Z
2
Z
1
Y
1
Y
2
X
Fig.19.6 (a)
In the figure shown above, Y1 and Y2 are parallel axes and are operated
in parallel by the command of a single address, address Y.
Z1 and Z2 are also parallel axes and are operated in parallel by the
command of a single address, address Z.
There are two types of travel on each parallel axis. The desired type can
be selected with the switches on the machine operator’s panel. Refer to
the manual provided by the machine tool builder for an explanation of
using the panel.
- Normal (parking off): The axis is operated as specified by the
command.
- Parking (parking on): The command is ignored and the axis is not
operated.

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