32 | Part 2
4.4 Manual REF. point return.
(1) Abstract of reference point
Reference point is used for setting the coordinate system or for traversing to specific
position in order to change tools during machining. The position of each reference
points is set in parameter for each axis. The returning to the reference point is operated
at a time by automatic command, and especially the 1st reference point can be
operated by manual.
The 1st reference point
1) Reference point return can be operated at a time manually and automatically.
2) At the first time to ON the machine power, once reference point return in manual
should be operated. By this, coordinate system of machine will be set and automatic
operation can be operated normally. In case of not operating reference point return
in manual after power ON, automatic operation cannot be executed.
3) When the servo of machine is absolute type, the coordinate system of machine is
memorized in NC without power supply, the machine can be operated correctly
without executing reference point return.
(2) Direction of manual REF. point return
1) In manual reference point return, the reference point return is executed in the
direction of each axes reference point regardless of (+) and (-) direction
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