
4.AUTOMATIC OPERATION OPERATION B-63324EN-1/03
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4.12 ACTIVE BLOCK CANCEL
Part programs can be halted, and the remaining amount of tool movement
in the currently executing block can be canceled by pressing the active
block cancel switch on the machine operator’s panel. Though this halts
automatic operation, modal information is still maintained. Operation is
restarted from the block following the block where operation was canceled
by cycle start.
Operation is as follows when the active block cancel switch on the
machine operator’s panel is pressed during automatic operation:
1 When the machine tool is moving, tool feed decelerates and comes to
a stop, and the remaining amount of tool movement is canceled.
2 Dwell is canceled during dwell execution.
3 Refer to the relevant manual published by the machine tool builder
for operations during execution of miscellaneous functions, spindle
functions, tool functions and second auxiliary functions.
If the Cycle Start button is pressed with machine operation halted,
automatic operation is restarted from the block following the block where
operation was canceled.
Refer to the relevant manual published by the machine tool builder for the
active block cancel switch.
Explanation
- Operation at restart of operation (G90)/(G91)
When operation is restarted, operation at restart of operation is determined
by the command programmed to the block following the block where
operation was canceled. If the following block is programmed using
absolute commands, operation is restarted after the tool moves towards the
end point of the following block from the position where it stopped. If
incremental commands are programmed in the following block, operation
is restarted in the incremental mode from the position where the tool
stopped.