FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

PROGRAMMING
B–62754EN/01
8. COORDINATE SYSTEM
91
The user can choose from set workpiece coordinate systems as described
below. (For information about the methods of setting, see Subsec.
II–8.2.1.)
(1)G50 or automatic workpiece coordinate system setting
Once a workpiece coordinate system is selected, 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.
When bit 2 (G50) of parameter No. 1202 is set to 1, executing the G50
command results in the issue of P/S alarm No. 10. This is designed
to prevent the user from confusing coordinate systems.
X
100.0
40.0
In this example, positioning is made to
positions (X=100.0, Z=40.0) in workpiece
coordinate system 2.
G55 G00 X100.0 Z40.0 ;
Workpiece coordinate system 2 (G55)
Z
Fig. 8.2.2 (a)
8.2.2
Selecting a Workpiece
Coordinate System
Examples

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