YASKAWA yasnac i80m

2.12
TOOL
OFFSET
(Cont’d)
Tool
Length
Offset
(G43/G44/G49)
Tool
length
offset
adds
or
subtracts
the
contents
of
tool
offset
value
memory
for
the
coordinate
command
value
of
Z-axis,
and
is used
to
correct
the too!
length.
ID
G
codes
for
tool
length
correction
Table
2.12.6
2.12.2
Meaning
i
C.ide
<ir>
nip
fugitive
(+)
direction
*
;
IW
Negative
(-)
direction
OS
•
1
44
Cancel
c;
JW
US
(2)
G43
and
G44
are
modal
commands
so
that
once
commanded,
they
remain
effective
until
they
are
canceled
by
G49.
(3)
The
G49
command
cancels tool
length
offset.
(4)
The
HOU
command
also
has the
function
to
cancel tool
length
offset.
(5)
Tool
length
offset
is commanded
in
the
following
format:
‘I’
(GOD
G43
(G44)
Z H
With
this
command,
the
tool,
position
is
moved
by
the
tool
offset
amount
specified
by
the
H
code
in
the
add
or
subtract
direction
toward
the
Z-axis command
position.
In
other
words,
the
position
is
compensated
for
by
the
tool
offset
amount
relative
to
the
Z-axis
command
target
point.
<2-
(GOD
Z
G43
(G44)
H
.
With
this
command,
the
position
is
moved
by
the
tool
offset
amount
specified
by
the
H
code.
G43IG44)
Z
H
;
H
With
this
command,
the
position
is
moved
by
the
difference
between
the
previous
tool
offset
amount
and
the
new
tool
offset
amount.
The
G
codes
in
group
01
must
be
GOO,
GOl.orGGO
when
G43.
G44.
orG49
is
commanded.
Command
in
G02
or
GlU
modes results
in
error.
112
-