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4.3.15 TV
CHECK
(VERTICAL PARITY CHECK)
Set
the
MODE
SELECT
switch
to
TAPE,
MEM
or
EDT.
1.
TV check
is
used
to
make the vertical
parity
check in
each block
during tape reading operation
in
TAPE
mode.
TV check ON or OFF can be se¬
lected
with
parameter
No,
81.
For
parameter
setting, see
4.3.9 Writing
Parameters.
Depress the
COM
key, and then the lamp
lights up.
-ÿ
P09
2.
Depress
the
RESET
key.
Then, the LABEL SKIP lamp lights
up and
the
stored part program
is
rewound.
3.
With
No.
"8 1"
at
"0"
•
•
•
TV Check OFF
With No.
"81" at"l"
•
TV Check ON
Key in an address data
(or
only
an
address)
desired
to
be searched.
4.
With TV Check ON, if the number of characters
including EOB code in
the
block
is
odd,
INPUT
ERROR lamp lights up during tape reading oper¬
ation
in
the
TAPE mode.
Alarm code
"13"
(TV
parity
error)
is
displayed. To adjust
the num¬
ber of characters in
a
block
to
be
even, use a
space code
as additional chatacter.
EXAMPLE 1: In case
that
"M."
"0,"
"l"
are
keyed
in,
"MOi"
is
to
be searched: If a
num¬
ber mis-keyed, first depress
the CAN key
and
then
key in the
correct
number again.
EXAMPLE
2:
"M.""-":
When
the
initially
detected
"M"
code is
to
be searched, regard¬
less of the number of
M.
4.3.16 CURRENT POSITION DISPLAY
UNIT+
5. Depress the AS
(address search)
key.
When
the address
search
starts
and the ad¬
dress data
concurs with
the instructed data,
the
BUFFER lamp lights up
and the
opera¬
tion stops.
The
movement of
the tool is summed up and the
current
position
of
each axis
is
displayed
on the
current
position display unit.
The display unit
is
installed separately
from
the
NC operator's
panel as external current
position
display unit
or
incorporated into the
panel as internal
current
position display unit.
To suspend the search operation, depress
the
RESET
key.
6.
1.
Depress the display
reset
pushbutton
at
each
axis
to reset
the current
position
of
the
axis.
NOTES-
A
block searched
in
the
TAPE or
MEM
mode
enters
the buffer register. If a
tool offset
is
instructed
in
the
same block,
coordinate
values
are modified with
tool
offset
values.
•
In
the
EDT
mode, the searched block will
enter
the
edit buffer register without being
modified with tool offset
value
and so
on.
But BUFFER lamp
is
on likewise
in
tape and
MEM mode.
-
Leading
zeros
may be suppressed
for
all ad¬
dress characters including N
in
address
search
operation.
For
example, N 12 means
NO 12
.
*
All commands in
the
searched blocks including
modal one are
not
recognized,
and
only update
data
enters
in
the
buffer
register.
• Operation begins
with the
searched
block, if
the CYCLE
START
key is depressed after a
search
is
operated in
the
TAPE
or
MEM mode.
•
Reset
the
control
before
Cycle
Start after ad¬
dress search in the
EDT
mode. Failure
to
do
so causes
format
error
(alarm
code: "14")
in
any operating
mode.
•
But, after address search
in
the
MEM
and
TAPE
modes.
Cycle Start can
be made
without
reset operation.
2. The display
cannot
be affected by the G50
command.
r
3. The display
can
be
updated even
in
case
of
the
MACHINE LOCK switch
on.
4.
The display
cannot
be changed in case
of the
DISPLAY LOCK
*
switch on.
5. Even
if
the
servo power
supply
is off, the
display
follows the machine movement.
RESET
I J
D
U
C Cl
i
L
J i. J
a
i
o
X
RESET
-
iJDuccn
i
L
J
l.JQ
i
O
Z
Fig. 4.3.16
-
31
-
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