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2.7
COORDINATE SYSTEM
(Cont'd)
WORK COORDINATE SYSTEM
1 SHIFT
QUANTITY
(300.. 300.)
800.
7ofl
r-
6110.
700.
-
600
600.
500.
-
300.
N3
500.
L'00.
400.
400.
800.
-
]
no.
N4 NO
1
1
1
X
x
x
WORK
*fl"-
COORDINATE
SYSTEM
(I
I
L'00.
300.
WO.
\
L'00.
400
500.
600.
700.
30U.
100.
L'OO.
N3
MACHINE
COORDINATE
SYSTEM
_________
-REFERENCE
100.
200.
snn.
4oo.
son.
eoo.
?oo.
80o.
son.
JOIHI.
liOo.
COORDINATE
SYSTEM
NI
X
X
X
1
x
100.
100.
200
200.
40(1.
50(1.
600.
700
Kill).
900.
MACHINE ORIGIN
1
X
X
x
1
x
N6
Fig. 2.7.7 Example of Machine Coordinate System
(G
53)
NOTE
O
The G53 command
must
always
be
issued
under the
following
conditions
(otherwise,
alarm
"322"
may result):
•
Not in
a
mirror
image
•
Not in
a
canned
cycle or tool
radius
compensation
C
•
The
immediately
preceding 01-group
G code
is
any
of GOO.
G01,
or
G60.
•
G53
and GOO
are not
instructed
in the same block.
O If
the G53 command
is
executed when machine lock
is ON,
the
current
value
display
moves
until
a
command value
by
which value
must
otherwise be
moved if machine
lock
is
OFF,
is
reached before completion. If machine lock
ON/OFF
is
switched
over
in the middle of
the
G53
block,
the
machine will
not
he
correctly positioned. However,
if
one
whole block
of
G
53 is executed in
a
machine
lock OFF
state,
the
machine
is correctly
positioned
as
in¬
structed regardless of whether there
was
machine
lock intervention previously.
Q
Be
sure
to
use the G53 command, in
the G90 mode. If G53 is instructed while still in the G91
mode,
the coordinate value is handled as the value of G90 mode.
®
If G53 is
instructed
in
a state
where tool length offset
or
tool
position
offset
is applied.
movement
is made
with the corrected
quantity
temporarily
canceled.
It
is generally
recom¬
mended
to
instruct
G53 after
canceling the
tool length offset
or
tool
position
offset.
-
88
-
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