
B-63662EN/01 11.CONTROL FUNCTIONS
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11.2 MACHINING RESTART FUNCTION
Burning may occur during laser machining, preventing machining
from continuing. In such a case, machining may be resumed by
putting the machine back in the state in which it was before burning.
This is done by a machining restart function.
If a machining error is detected, the machining restart function moves
the machine back to a specified position through the same path it had
taken before the error occurred, while the laser beam is kept turned
off. When the machine
gets back to the specified position, the machining restart function
again places the machine in an operable state and causes it to move
forward to the position where it started going back. At this point, the
machine restarts machining according to the programmed commands.
This function cannot be used together with the three-dimensional
machining function. It is necessary to specify the retrace function also.
The machining restart function conforms to the specifications of the
retrace function.
The machining restart function behaves as described below.
A PMC ladder program can be created to restart machining
automatically.
Z
Restart completion distance
Retract distance
Retrace signal = off
Automatic operation
start signal = on
Retrace distance
Retry processing
Skip
processing
Automatic operation pause signal = on
Retrace signal = on
Automatic operation start signal = on
XY
<3>
<4>
<5>
<8>
<2>
<6>
<9>
<10>
<11>
<12>
<13>
<1>
<1> When the program is running with the machining restart mode
signal selected, if a machining error is detected on the machine
side, automatic operation should be made to pause.
<2> When automatic operation starts with the retrace signal selected,
the point where automatic operation starts is recorded as a
retrace start point, and the machine retracts in the +Z direction
through a specified distance.