
B–63523EN–1/03
1. AXIS CONTROL
120
16i/18i/160i/180i
160is/180is
OPERATOR’S MANUAL
(For Machining Center)
(B–63534EN)
II.7.1 MACHINE COORDINATE
SYSTEM
OPERATOR’S MANUAL
(For Lathe) (B–63524EN)
II.7.1 MACHINE COORDINATE
SYSTEM
21i/210i/210is
OPERATOR’S MANUAL
(For Machining Center)
(B–63614EN)
II.7.1 MACHINE COORDINATE
SYSTEM
OPERATOR’S MANUAL
(For Lathe) (B–63604EN)
II.7.1 MACHINE COORDINATE
SYSTEM
OPERATOR’S MANUAL
(For Manual Milling
Machine) (B–64204EN)
II.7.1 MACHINE COORDINATE
SYSTEM
OPERATOR’S MANUAL
(For Manual Lathes)
(B–64194EN)
II.7.1 MACHINE COORDINATE SYS-
TEM
A coordinate system used for machining a workpiece is referred to as a
workpiece coordinate system. A workpiece coordinate system is to be set
with the CNC beforehand (setting a workpiece coordinate system).
A machining program sets a workpiece coordinate system (selecting a
workpiece coordinate system).
A set workpiece coordinate system can be changed by shifting its origin
(changing a workpiece coordinate system).
A workpiece coordinate system can be set using one of four methods:
(1)Method using G92 (G50 for G code system A)
A workpiece coordinate system is set by specifying a value after G92
(G50) in the program.
(2)Automatic setting
If bit 0 (ZPR) of parameter No. 1201 is set beforehand, a workpiece
coordinate system is automatically set when manual reference
position return is performed.
This method can be used when no option is specified for the workpiece
coordinate system.
(3)Method of using G54 to G59
Six workpiece coordinate systems are set in advance, using the MDI
panel, and the workpiece coordinate system to be used is selected
using program commands G54 to G59.
Reference item
1.5.2
Workpiece Coordinate
System/Addition of
Workpiece Coordinate
System Pair
General
Setting a workpiece
coordinate system