14. Coordinates System Setting Functions
14.4 Basic Machine Coordinate System Selection
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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 X__ Y__ Z__
α
__ ;
α
:Additional
axis
Detailed description
(1) When the power is switched on, the basic machine coordinate system is automatically set as
referenced to the reference (zero) position return position, which is determined by the
automatic or manual reference (zero) position 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 radius compensation amount for the commanded axis will
not be canceled.
(6) The 1st reference position coordinate value indicates the distance from the basic machine
coordinate system 0 point to the reference position (zero point) return position.
(7) The G53 command will move with cutting feedrate or rapid traverse following command
modal.
(8) If the G53 command and G28 command (reference position return) are issued in the same
block, the command issued last will be valid.
Basic machine coordinate system
zero point
(500,500)
1st reference position coordinates
X = +500 Y = +500
Reference (zero) position
return position (#1)
-Y
-X
R#1
M