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4.
LINKING TO THE AnACPU (WITH DEDICATED INSTRUCTIONS)
AND THE AJ71 PT32-S3
MELSEC-A
4.5
Contents and Configuration of a n
AJ71 PT32-S3
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)
Address
1
(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
data
(Unused)
Line error retry counter
Retry counter
(Unused)
Remote terminal module
faulty station
Remote terminal module
error code
(Unused)
data
Partial refresh station set
(Unused)
Assignment of the buffer
Content
by
P C CPLJ
Readlwrits
Sets the number of retries when a communications error has occurred.
I
-
Checks the location of the line error.
Readlwrite
enabled
-
Writes data to be output to the batch refresh-type remote I/O module.
-
-
Stores the type identification of each remote module being connected. Read
only
-
-
Stores faulty remote station numbers. (Detected state is retained until
enabled
reset.)
Read/write
-
-
Stores faulty remote station numbers. (The latest state is retained.)
Stores the cause of the M I N I 4 3 link communications error signal
going ON.
Stores the accumulated number of times the MINI-S3 link error
detection goes ON.
Stores the input data from the batch refresh-type remote I/O modules.
Read only
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.
-
I
-
Writes the station number of a partial refresh-type of remote I/O
module and the data digit designation (number of times the partial
enabled
refresh processing is done).
Read/write
. . . . .
-
-
4 - 19
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