YASKAWA yasnac i80m

2.6
REFERENCE
POINT
RETURN
(Cont’d)
©
'
Tool
length
offset
can
be
canceled
by
G28
command.
Whether
or
not
it
should
be canceled
is
specified
by
a
parameter.
This,
specification
is
only
effective
when Z-axis
command is
present
in
the
same
block
as
G2S.
Table
2.6.2
Selection
of Cancel
in
Tool
Length
Correction
Movement
Parameter
Pm4U10
D7
Tool
length
offset
is
canceled
during
reference
point
return
at reset.
The
H
code
is
cleared
to
“0."
However,
tool
length
offset
G
code
is
retained.
0
Tool
length
offset
is
not
canceled
during
reference
point
return
at reset.
The
If
code
and
tool
length
offset
G
code
are
retained.
if
an
offset
is
already
specified,
be
sure
to
cancel the
offset
before
issuing
the
G2S
command.
1
©
Reference
point
return
valid/invalid
can
be
selected
for
each
axis.
If
reference
point
restore
invalid is instructed
for
an
axis
in
the
G28
block,
alarm
“341”
results.
Refer
to
parameters
Pm4002
DO
to
D4.
©
When
a
cycle
is
started
after
power-on
without
performing
all
axis
reference
point
restore.
alarms
“0411"
to
“0415"
can
be
issued.
Whether
or
not
such
alarms
should be
issued
is
selected
by
a
parameter.
For
details,
refer
to
parameter
F’in-KXil
DH.
If
set
for
“no
alarm”
in
the
above,
whether
or
not
reference
point
restore
is
required
can
be
specified
for
each
axis
with
a
parameter.
For
details,
refer
to
parameters
I'mtOlS
DO
to
D4.
©
When
any
move
command other
than
G28
is
executed
after
power-on
without
performing
reference
point
return,
alarms
“0091"-“iXi99"
can
be issued. Whether
or
not
such
alarms
should
be issued
is
specified
by
a
parameter.
For
details,
refer
to
parameters
I’m-IOfi-l
P0-
D7
and
Fni4l)05
Du.
©
The absolute
coordinate
value
of
the
axis instructed
by
the
G28
block is
stored
in
memory
as an
intermediate
point.
For
axes
not
instructed
by
the
G28
block,
the
intermediate
point
of
the
previously.
instructed
G28
is
stored
in
memory
as
the
intermediate
point
for
that axis.
©
If
M.
S.
T
or
B
command
is
made
in
the
same
block
as
G28,
the
machine
is
moved
to
the
reference
point
regardless
of
whether
FIN
processing
is
completed
or
not.
Therefore.
DEN
output
is
made
at
the
reference
point.
©
Reference
point
return
and
machine lock
intervention
There
are
twu
types
of
machine lock
intervention
operations:
machine lock is
turned
ON
after
the machine
is
stopped
by
feed
hold
during
movement
or
the
machine
lock
is
turned
OFF
after
the
machine
is
stopped
by
feed
hold
once
again.
Table
2.
6.
3
shows
how
the
machine is
operated
by
machine
lock
intervention.
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