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APPENDICES
Table 3.1 List of Special RegIsters (ContInued)
MELSEC·A
Related
Related
-
Name
Stored
Explanation
Special
S_1al
Data
Relaya
Reglalers
Mode aettlng
Proce••lng
0 : With
Faulty stations (1/0 modules and
automatic
remote terminal modules) are
0:
online
disconnected from the link.
With
return
Communication with normal
automatic
stations continues.
online
• When faulty stations have returned
return
to normal,communication restarts
1:
automatically.
Without
automatic
1
:
Without
Faulty stations (110 modules and
09173
Mode
online
automatic
remote terminal modules) are
return
-
-
setting
2:
online
disconnected from the link.
cem-
return
Communication with normal
stations continues.
munica-
• When faulty stations have returned
tion stop
to normal,communication can be
at online
resumed by rebooting.
error
2
:
Communication
• When one of the I/O modules and
stop at online
remote terminal modules has
error
become faulty, communication with
all stations stops.
• When the faulty station has
returned to normal, communication
can be resumed by rebooting.
• Set the number of retries to be executed with an I/O
module or remote terminal module if communication Is
faulty
Retry
Default
: 5
09175
09174
Number of
Setting range: 0 to 32
09196
count
-
setting
retries
If communication with any I/O modules or remote
to
terminal modules cannot be executed correctly within the
09199
preset number of times of retry, a communication error
occurs.
Line
• The number of retries is stored when line error (time
09175
error
Number of
over) has occurred.
retry
retries
• When the line has returned to normal and
M9061
09174
counter
communication with I/O modules and remote terminal
modules has resumed, the count number is reset to
O.
APP-18

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