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5.
LINKING TO AN ACPU AND AN AJ71 PT32-S3
MELSEC-A
5.5
Contents and Configuration of an AJ71PT3243 Buffer
The AJ71PT32-S3 is provided with a buffer (without battery backup) for data
communications with a PC CPU.
Use a FROM/TO instruction to read and write data from and to the buffer,
(1)
Assignment of the buffer
(Unused)
Retry count
(Unused)
Line error check
(Unused)
Batch refresh send data
(Unused)
Remote module card
information
(Unused)
Accumulated faulty station
detection
(Unused)
Faulty station detection
(Unused)
Communications error code
Error detection code
(Unused)
Batch refresh received dats
(Unused)
Line error retry counter
Retry counter
(Unused)
Remote terminal module
faulty station
Remote terminal module
error code
(Unused)
Partial refresh station set
data
(Unused)
Content
by PC CPl
Readlwritc
~
~
~
~~~~~~
-
Sets
the number of retries when a communications error has occurred.
Readhrite
enabled
Writes data to be output
to
the batch refresh-type remote 1 / 0 module.
-
I
-
Stores the type identification of each remote module being connected.
Read only
-
I
-
Stores faulty remote station numbers (Detected state is retained until
Readhrite
reset.)
enabled
-
I
-
Stores faulty remote station numbers. (The latest is retained.)
-
Stores the cause of the MINI-S3 link communications error signal going
ON.
Stores the accumulated number of times the MINI-S3 link error detection
goes ON.
I
Stores the input data from the batch refresh-type remote 1 / 0 modules.
Read only
-
Stores the number of retries when communications with all remote
modules is disabled due to a line error.
Stores the number of retries executed to faulty stations.
-
~
~
~
~~~~~
Stores the station number when a remote terminal module causes an
error.
Stores the cause of the remote terminal module error-detected signal
X(n+24) going ON.
Writes the station number
of
a partial refresh-type of remote 1 / 0 module
and the data digit designation (number of times the partial refresh
processing is done).
Readlwrite
enabled
-
5-
18
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