7. COORDINATE SYSTEM
If an absolute command is is-
sued, the base point moves to
the commanded position. In
order to move the nozzle tip to
the commanded position, the
difference from the nozzle tip
to the base point is compen-
sated by tool length offset.
Setting the coordinate system by the
(The nozzle tip is the start point for the pro-
Setting the coordinate system by the G92X600.0Z1200.0; command
(The base point on the nozzle holder is the start point for the pro-
The user can choose from set workpiece coordinate systems as described
below. (For information about the methods of setting, see II– 7.2.1.)
(1)Once a workpiece coordinate system is selected by G92 or automatic
workpiece coordinate system setting, absolute commands work with
the workpiece coordinate system.
(2)Choosing from six workpiece coordinate systems set using the MDI
By specifying a G code from G54 to G59, one of the workpiece
coordinate systems 1 to 6 can be selected.
G54 Workpiece coordinate system 1
G55 Workpiece coordinate system 2
G56 Workpiece coordinate system 3
G57 Workpiece coordinate system 4
G58 Workpiece coordinate system 5
G59 Workpiece coordinate system 6
Workpiece coordinate system 1 to 6 are established after reference
position return after the power is turned on. When the power is turned
on, G54 coordinate system is selected.
In this example, positioning is made to
positions (X=40.0, Y=100.0) in workpiece
coordinate system 2.
G90 G55 G00 X40.0 Y100.0 ;
Workpiece coordinate system 2 (G55)
Selecting a Workpiece