
5. AUTOMATIC OPERATION
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This function selects whether the movement of the tool with manual
operation (such as jog feed and manual handle feed) is counted for
calculating the current position in the workpiece coordinate system. A
check signal is also output to indicate whether the manual absolute
function in the CNC is turned on or off.
When manual operation interrupts during automatic operation:
i) At the end of the block where manual operation interrupts, the tool
position moves in parallel by the manual move amount, regardless of
the absolute or incremental command.
ii) In subsequent blocks, the parallel-moved tool position remains
unchanged until an absolute command block appears. Therefore, if all
blocks are programmed by incremental commands, the tool keeps the
parallel-moved position until machining ends.
In case of incremental commands
Manual
intervention
Programmed tool path
The tool returns to the programmed
tool path when an absolute command
block is encountered.
End
poin
Fig. 5.4 (a) Manual absolute ON
CAUTION
If the machining end position has shifted by the manual
move amount because all blocks are programmed by
incremental commands only, the present position is
displayed shifted by the manual move amount.
5.4
MANUAL ABSOLUTE
ON/OFF
General
When manual absolute
turns on (manual
absolute signal *ABSM
=0)