YASKAWA YASNAC 3000G - Page 150

NOTES:
•
In
RAPID
and
JOG
modes,
when
the
CYCLE
START
button
is
depressed
after
writing
F,
M,
S,
T
or
B
code
by
use
of
the
same
procedure
as
that
of
MDI
operation,
the
command
be¬
comes
effective
as
soon
as
written,
and
BCD
signal
is
fed.
This
procedure
is
used
to
add
a new
data
to
an
active
buffer.
However,
MOO,
MOi,
M02,
M30
and
M9
1
to
M99
cannot
be
written.
•
Writing
data
by
MDI
cannot
be
executed
in
tool
radius
compensation
modes
(G41,
G42)
because
two
or
three
blocks
are
read
ahead.
However,
F,
M,
S,
T
or
B+
code
can
be
mod¬
ified.
The
modification
becomes
effective
in
the
next
block.
•
Writing
data
by
MDI
should
not
be
performed
in
canned
cycle
modes
(G73,
G76,
G81
to
G89).
The
machine
may
not
operate
properly.
Excepting
in
tool
radius
compensation
and
can¬
ned
cycle
modes,
MDI
operation
is
possible.
Although,
the
next
block
of
data is
usually
read
ahead
in
the
buffer
register,
additional
or
al¬
tered
data
can
be
written
into the
buffer
register
by
MDI
operation.
7.8
AUTOMATIC OPERATION
IN MDI
MODE
1.
Set
MODE
SELECT
switch
to
MDI
position.
2.
Write
one
block
data
by
MDI
operation,
and
BUFFER
lamp
on
operator's
panel
lights,
Refer
to
4.3.2
Writing
Command
Data
by
MDI.
7.10
PREPARATION
FOR
TURNING
OFF
POWER
3.
Depress
CYCLE
START
button,
and
automat¬
ic
operation
can
be
executed
in
MDI
mode.
BUFFER
lamp
will
be
off.
Make
sure
that the
machine is
at
standby
and
CYCLE START
lamp
is
extinguished.
1.
7.9
MDI
OPERATION
INTERRUPTING
AUTOMATIC
OPERATION
2.
Check
to
see
that
NC
ALARM
and
INPUT
ER¬
ROR
lamps
are
not
illuminated.
If
illumi¬
nated,
detect
the
causes
by
displaying
alarm
code
and
eliminate
them.
Refer
to
4
.
3
.
12
Alarm
and
Status
Code
Display.
To
modify
the block
data
after
interrupting
op¬
eration
in
TAPE
or
MEM
mode,
the
following
operation
should
be
done
after
interrupting
the
operation.
Inspect
the
machine
referring
to
the
machine
tool
builder's
manual.
3.
1.
Turn
on
SINGLE
BLOCK
switch,
and
the
op¬
eration
is
stopped
temporarily
after
the
com¬
pletion
of
the
block
being
executed.
At
the
same
time,
the
next
block
data
is
stored
in
the
buffer
register.
7.11
TURNING
OFF
POWER
l.
Depress
EMERGENCY
STOP
pushbutton
to
turn
off
the
servo
power
supply.
2.
Display
the data
on
UNIVERSAL
DISPLAY
according
to
4.3.
1
Display
of
Command
Data,
and
check
it.
2.
Depress
POWER
OFF
pushbutton
on
the
op¬
erator's
panel
to
turn
off
the
control
power
supply.
3.
Set
MODE
SELECT
switch
to
MDI
operation.
3.
Cut
off
the
main
power
supply
from
the
con¬
trol.
4.
Modify
the
data
referring
to
4.3.2
Writing
Command
Data
by
MDI.
5.
After
modifying
the
data,
set
back
MODE
SELECT
switch
to
the
interrupted
automatic
mode
(TAPE
or
MEM).
6.
Return
SINGLE
BLOCK
switch
to
OFF
posi¬
tion.
7.
Depress
CYCLE
START
button,
and
TAPE
or
MEM
operation
can
be
continued
by
the
modified
data.
143
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