
4.AUTOMATIC OPERATION OPERATION B-63324EN-1/03
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- Block restart interference check
The block restart interference check is made based on the value (d:
permissible block restart interference check value) set in parameter No.
7651. The interference check issues an alarm unless the distance
between the normal path and the block restart point is within d.
Fig. 4.9 (d)
The block restart interference check function can be enabled and
disabled using bit 7 of parameter No. 7605. However, the interference
check is not performed in the following cases even if it has been
enabled:
- When the tool is moved manually to the start point of the
interrupted block while the block return switch is on.
- When the interrupted automatic operation is restarted with the
cutter compensation mode canceled.
- When no vector is available for cutter compensation at the start
point of the block in which the tool movement was interrupted.
(Start up of cutter compensation)
Limitation
- Automatic reference position return
The command for automatic reference point return (G28 and G30) in
the cutter compensation mode does not return the tool to the correct
position even when the restart operation is performed within the block.
-Dwell
The restart operation cannot be performed in the block for which a
dwell (G04) has been specified.
- Setting a compensation value
The compensation value must be set prior to turning on the block return
switch.
End point of
interrupted
block
Normal path
Point at which automatic
operation is interrupted
Manual operation
Point at which
automatic operation
is to be restarted.
The workpiece may be cut when
automatic operation is restarted.
Tool center path
Programmed path