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APPENDICES
/MELSEC-A
D9174
-
09176
WlBo
to
W193
D91W
to
D9199
-
Retry counl
setting
Line error re.
try
counter
Remote ter.
mlnal mod.
ule
error
code number
Faulty sta-
tion detec-
tion
Stormd
Data
Number of retries
Number
of
retries
0:
Normal
Set the number of retries to be executed with an
UO
module or remote
Default:
5
Setting range:
0
to
32
If
communication with any
UO
modules or remote terminal modules
cannot be executed correctly within the preset number of times of retry,
a
communication error
occurs.
When the line has returned to normal and communication with
UO
The number of retries is stored when line error (time over) has occurred.
modules and remote terminal modules has resumed, the count number
is
res&
to
0.
terminal module if communication is faulty.
~
The error code number of faulty remote terminal module is stored when
The storage areas for remote terminal module error code numbers are
M9060
is switched on.
as shown below.
Station numben
for
remote
ter-
with
D9021
to
09034.
minal modules
No.1 to 14
are
wt
,
:
j
D9192
Remote terminal
module
No.13
D9193
Remote terminal module
No.14
Error code is cleared in the following cases.
When the RUN key switch is moved from
STOP
to RUN.
(D9180
to
09183
are all cleared.)
When Yn4 of each remote terminal module is switched from
OFF
to
ON.
Set the bit which corresponds to the faulty station at
‘1
”.
(The bit which
corresponds with the faulty station becomes
“1’
when normal com-
munication cannot be restored within preset number of retries set with
D9174.)
With automatic return enabled, such corresponding bit is reset to
“0”
Data structure
when normal communication is restored.
DBtS7
mtm
~~
At
the remote
110
module fuse blow detection, its corresponding bit is
0:
Normal
1:
Communication
fault
Table
3.1
List
of
Special Registers
-
RJl(d
sgrw
e!
D9175
M196
D919
to
D917
-
D902
to
D905
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