The CNC machine tool has a position used to determine the machine
This position is called the reference position, where the tool is replaced
or the coordinate are set. Ordinarily, after the power is turned on, the tool
is moved to the reference position.
Manual reference position return is to move the tool to the reference
position using switches and pushbuttons located on the operator’s panel.
Machine operator’s panel
Fig.1.1 (a) Manual reference position return
The tool can be moved to the reference position also with program
This operation is called automatic reference position return (See Section
D Manual reference
position return (See