YASKAWA yasnac i80m

2.12
TOOL
OFFSET
(Cont’d)
(2)
Specification
of
offset
plane
The
plane
to
which tool
radius
compensation
is
applied
is
specified
by
G17,
G18,
or
G19.
These
are
G
codes
in
group
02,
so
that
when the
power
is
turned
on,
the
XY
plane
(G17)
-is
specified
by
default.
Table
2.12.11
G
Code
of
Plane
Specification
Group
Meaning
Code
XY
plane
specified
ZX
plane
specified
YZ
plane
specified
G
17
02
G
18
02
02
•
G
19
G17
is
specified
when
the
power
is
turned
ON.
The
G
code
for
plane
specification
must
always
be
specified
in
the
same
block
as
G41
(or
G42)
or
a
block
preceding
it.
If
the
offset
plane
is
switched
in
offset
mode,
alarm
“183"
will
occur.
Tool
radius
compensation-C
cannot
be
applied
for
the
plane
that includes
a
fourth
axis
or
a
fifth
axis
(option).
(3)
Method
of
entering
the
offset
mode
(a)
There
are
two
types
which
can
be
switched
by
parameter.
pm4012
D6
=
0
Type
A
pm4012
D6
=
1
:
Type
B
<I>
Type
A
:
Does
not
move
if
move
command
is
not
provided
in
G41
(G42)
command
block.
If
a
move
command
is
not
given
in
the
G41
(G42)
command
block.
no
axes
move.
In
other
words,
offset
is
not
applied
until
a move
command
is
encountered.
If
movement
in
the
offset
plane
is
not
commanded
in
a
block
next
to
G41
(or
G42)
.offset
operation
is
initiated
for
that
block
by prereading
one
block ahead. For such
blocks
(with
no
move
commands
given),
two
continuous
blocks
can
be
programmed.
If
no
motion
in
the
offset
plane
is
contained
in
three
or
more
consecutive
blocks,
the
offset
operation
is
aborted
and
no
offset
block
is
generated.
(2)
Type
B
:
Moves
even
if
move
command
is
not
provided
in
G41
(G42)
command
block.
When
G41
(G42)
is
commanded,
the tool
moves
to
a
position
offset
only
by
radius value.
The
offset
direction is
on
the
normal
line
of
the
starting
point
of
the
block
next to
G41
or
G42,
and
on
the
left
or
right
of
the
advancing
direction
according
to
G41
(G42).
When
the coordinate
command
is
not
provided
in
the
block
of
G41
126
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