4. AUTOMATIC OPERATION
Procedure for program restart by specifying a block (laser specification)
1 Retract the nozzle and perform required operations (such as
replacement of the nozzle).
1 Select EDIT mode, then move the cursor to the block from which the
program is to be restarted.
2 Select MEM mode, then press the laser specification program restart
switch (for the actual switch name, refer to the manual provided by
the machine tool builder).
3 Press the cycle start button. A search is made for the block from the
top of the program.
When the block before the block from which the program is to be
restarted is read, the nozzle is positioned to that point and enters the
feed hold state.
4 Press the laser specification program restart switch again, then press
the cycle start button again. Automatic operation starts from the target
Under any of the following conditions, P–type restart cannot be
⋅ When automatic operation has not been performed since the power
was turned on
⋅ When automatic operation has not been performed since an
emergency stop was released
⋅ When automatic operation has not been performed since the
coordinate system was changed or shifted (change to an external
workpiece origin offset value)
The block from which the program is to be restarted need not be that block
executed when operation was interrupted. The program can be restarted
from any block. When P–type restart is performed, the restart block must
use the same coordinate system as the block executed when operation was
When single–block mode is set during movement to the restart position,
operation stops every time the nozzle completes movement along an axis.
When operation is stopped in single–block mode, MDI intervention
cannot be performed.
During movement to the restart position, manual intervention can be used to
perform a return operation for an axis for which it has not yet been performed.
A return operation cannot be performed again on axes for which a return has
already been completed.
Never perform reset during the period between the start of a search for
restart and the restart of processing. Otherwise, restart must be performed
again from the first step.
D P–type restart
D Restart block
D Single block
D Manual intervention