Basic Machine Coordinate System Selection ; G53 - Mitsubishi Electric MELDAS C6 Programming Manual

14. Coordinates System Setting Functions

14.4 Basic machine coordinate system selection ; G53

Function and purpose
The basic machine coordinate system is the coordinate system that expresses the position (tool
change position, stroke end position, etc.) that is characteristic to the machine.
The tool is moved to the position commanded on the basic machine coordinate system with the
G53 command and the coordinate command that follows.
Command format
Basic machine coordinate system selection
(G90) G53 Xx Yy Zz αα ;
αα
Detailed description
(1) When the power is switched on, the basic machine coordinate system is automatically set as
referenced to the reference (zero) point return position, which is determined by the automatic
or manual reference (zero) point return.
(2) The basic machine coordinate system is not changed by the G92 command.
(3) The G53 command is valid only in the block in which it has been designated.
(4) In the incremental value command mode (G91), the G53 command provides movement with
the incremental value in the coordinate system being selected.
(5) Even if G53 is commanded, the tool diameter offset amount for the commanded axis will not
be canceled.
(6) The 1st reference point coordinate value indicates the distance from the basic machine
coordinate system 0 point to the reference point (zero point) return position.
(7) The G53 commands will all move with rapid traverse.
(8) If the G53 command and G28 command (reference point return) are issued in the same block,
the command issued last will be valid.
14.4 Basic machine coordinate system selection
:Additional axis
M
-X
(500,500)
Reference (zero) point
R#1
return position (#1)
Basic machine coordinate system
zero point
1st reference point coordinates
X = +500
-Y
281
Y = +500