YASKAWA yasnac i80m Instruction Manual page 98

2.6
REFERENCE POINT RETURN (Cont'd)
(4)
If G28
or
G30 (refer to par. 2.6.4) is
instructed
a
number of
times, the
coordinate value of
point
B for G29
movement
becomes
an
intermediate
point ultimately created by the latest G28
or
G30.
(Example) Indicated by absolute command for
easy
understanding
Intermediate point
coordinate value
X Y Z
(0, 20., 10. )
(30.
.
20.
.
10.
)
N21 G90
;
N22 G28 Z10. Y20.
N23 G28 X30. :
X
N24 G29 X— 40. Y-50.
:
GOO X30. Y20. :
GUO X-40. Y-50.
:
Equivalent
to
these
two
blocks
C
Example of Programming
j
In ihe
L'.ivt-
nf '".01 command. v.ilid
l<>r
ihe command
value >pf OL'1.!
imovenieni
quantity from
ail
inter
medial*-
pmiiii
and the
intermediate puini i"
no!
affected
N31 91 :
N32 C.L's Z
.
No?. fJL-S X
JO
Y-W.
;
N
34
Mufi
.
N35 XJfi. Y--I0.
.
& L
(REFERENCE POINT)
:
INTERMEDIATE POINT
(ABSOLUTE COORDINATE VALUE)
K
\
u
7s
+
V
|J!U COMMAND
a-'
\
/
\
/
\
\
/
-1—
rf
A
+ .\
•10
Fig. 2.6.3 B-Point Coordinate Value for G29
Movement
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