Mitsubishi FX2N-64CL-M, Руководство пользователя

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Assignment of Buffer Memory 10
10-1
10. Assignment of Buffer Memory
Data transfer between the PLC main unit and FX
2N
-64CL-M is executed by a program in the
PLC.
Use the FROM instruction to read data saved in the FX
2N
-64CL-M to the main unit.
The FROM instruction reads the data saved in the buffer memory (BFM) in the FX
2N
-64CL-M
to devices (such as D and M) in the main unit.
Use the TO instruction to write data from the main unit to the FX
2N
-64CL-M.
The TO instruction writes data from devices (such as D and M) in the main unit to the buffer
memory (BFM) in the FX
2N
-64CL-M.
10.1 Buffer memory list
Buffer memory No.
Name Description
R: Read
W: Write
DEC HEX
0 to 3 0h to 3h
Remote station connection
information
Stores the connection status of each remote
station. (When a remote station is connected, a
corresponding bit is ON.)
R
4 to 7 4h to 7h
Link error station
information
Stores the data link status of each remote
station.
R
8 to 11 8h to Bh
Remote I/O error
information
Stores the I/O error occurrence status of each
remote station. For the contents of error, refer to
the instruction manual of each remote station.
R
12 to 15 Ch to Fh (Prohibited to use) -- --
16 to 19 10h to 13h
Reserved station
information
Stores the reserved station setting status. R
20 14h
Number of required input
blocks
Stores the number of input blocks (in the unit of
8 points) required to assign the I/O numbers.
R
21 15h
Number of required of
output blocks
Stores the number of output blocks (in the unit
of 8 points) required to assign the I/O numbers.
R
22 16h
Data link final station
information
Stores the final station number available in the
data link. (This information is set according to
the station information stored in the EEPROM.)
R
23 to 25 17h to 19h (Prohibited to use) -- --
26 1Ah External switch information Stores the DIP switch setting status. R
27 1Bh Command
Gives instructions to the FX
2N
-64CL-M for
stopping or starting up again the data link and
writing data to the EEPROM. R/W
28 1Ch Status information
Stores the status information such as RUN and
data link.
R
29 1Dh Detailed error information
Stores the detailed information on errors
detected by the FX
2N
-64CL-M.
R
30 1Eh Model code K7120 R
31 1Fh (Prohibited to use) -- --
32 20h
Detailed remote station
information (station No.1)
Stores the information (I/O type and number of
points) on the remote station No.1. The
information can be edited in the CONFIG mode.
R/W
*1
... ... ... ... ...
95 5Fh
Detailed remote station
information (station No.64)
Stores the information (I/O type and number of
points) on the remote station No.64. The
information can be edited in the CONFIG mode.
R/W
*1
96 to 143 60h to 8Fh (Prohibited to use) -- --
*1 "W" is enabled only in the CONFIG mode.
FX2N-64CL-M CC-Link/LT Master Block Model