The CNC machining tool and the industrial machine usually has a
position used to determine the machine position.
This position is called the reference position, where the attachment 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
position return (See