YASKAWA YASNAC 3000G

2.14.17
ABSOLUTE/INCREMENTAL
DESIGNATION
(G90,
G9
1
)
Initial
state
Parameter
No.
78
These
G
codes
are
for
designating
whether the
movement
data
following
the axis address
are
in
absolute
value
or
incremental
value.
"0"
G90
u
jii
G91
•
G9
0
•
•
.
Absolute
designation
2.14.18
PROGRAMMING
OF
ABSOLUTE
ZERO
POINT
(G92 )
In
the
block
including
G90
and
in
the
subsequent
blocks,
the
movement
data which
follow
addresses
X, Y,
Z,
a"*-
are
regarded
as
absolute values.
It
is
necessary
to
program
the
absolute
zero
point
before
programming
movement
command.
When
an
absolute
zero
point
is
programmed,
one
abso¬
lute
coordinate
system
is
determined,
and
all
absolute
movement
commands
programmed
there¬
after
will
move
the
tool
on
the
programmed
coor¬
dinate.
G90
GOO
X.
. .
Y-.
•
Z-
• •
*
•
.
.
Absolute
designation
.
G9
1
• •
•
Incremental
designation
In
the
block
including
G91
and
in
the
subsequent
blocks,
said data
area
is
regarded
as
incremen¬
tal
values.
.
G92
X-
•
•
Y-
.
.
Z-
•
.
(a+
•
-
)
*
With
this
command,
the
current
position
of
the
tool is
programmed
in
the
control
as
absolute
coordinate
point
(X,
Y,
Z,
a"*").
That
is,
pro¬
gram
the distance
(with
sign)
from
the
desired
absolute
coordinate
zero
position
(0,
0, 0,
0+
)
to
the
current
position.
In
other
words,
G92
command is
for
designating
the
position
of
the
"absolute
zero
point."
G91 G01
X-
• •
Y-
• •
F-
••
*
•
-
Incremental
designation
+Y
EXAMPLE
*6
Y3
G92
X50000
Y30000
Z40000
*
*5
Y2
*1*4
+Y
X5
*4
7
X1
G91
:
Incremental
G90-
Ahsolute
_
_X_2.
300,
__
Xl
~~P\
s
s
i
t
f
500
_+X
/
i
i
I
I
i
Fig.
2.
14.
17
i
x
400
•
G90,
G91
are
modal
G
codes
of
E
group.
+Z
•
If
both
G90
and
G91
are
programmed
in
the
same
block,
the
G
code
which
was
programmed
last
is
valid.
Fig.
2.
14.
18
•
G92
is
a
G
code
of
non-
modal
group
which is
valid
only
in
the
programmed
block.
It
is
not
possible
to
program
other
G
codes.
F,
M,
S,
T,
B
+
codes
in
the
same
block.
NOTE:
•
The
initial
state
of
these
G
codes
when
the
pow¬
er
is
turned
on
can
be
designated
by
parameter
No.
"78."
-
77
-