
PROGRAMMING
7. COORDINATE SYSTEM
B–63124EN/01
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The six workpiece coordinate systems specified with G54 to G59 can be
changed by changing an external workpiece zero point offset value or
workpiece zero point offset value.
Three methods are available to change an external workpiece zero point
offset value or workpiece zero point offset value.
(1) Inputting from the MDI panel (see III–11.4.6)
(2) Programming by G10 or G92
(3) Changing an external workpiece zero point offset value (refer to
machine tool builder’s manual)
ZOFS2
ZOFS3
ZOFS4
ZOFS5
ZOFS1
ZOFS6
EXOFS : External workpiece zero point offset value
ZOFS1AZOFS6 : Workpiece zero point offset value
EXOFS
Workpiece
coordinate
system 1 (G54)
Workpiece
coordinate
system 2 (G55)
Workpiece
coordinate
system 3 (G56)
Workpiece
coordinate
system 4 (G57)
Workpiece
coordinate
system 5 (G58)
Workpiece
coordinate
system 6 (G59)
Machine zero
Fig. 7.2.3 Changing an external workpiece zero point offset value or workpiece zero point offset value
G10 L2 Pp _;
p=0 : External workpiece zero point offset value
p=1 to 6 : Workpiece zero point offset value correspond to
workpiece coordinate system 1 to 6
: Workpiece zero point offset value of each axis
IP
IP
G92 _;
IP
With the G10 command, each workpiece coordinate system can be
changed separately.
By specifying G92 IP_;, a workpiece coordinate system (selected with
a code from G54 to G59) is shifted to set a new workpiece coordinate
system so that the current tool position matches the specified coordinates
( IP_).
Then, the amount of coordinate system shift is added to all the workpiece
zero point offset values. This means that all the workpiece coordinate
systems are shifted by the same amount.
7.2.3
Changing Workpiece
Coordinate System
Format
D Changing by G10
D Changing by G92
Explanations
D Changing by G10
D Changing by G92