Assignment Of Buffer Memory; Buffer Memory List - Mitsubishi MELSEC-F FX2N-64CL-M User Manual

FX2N-64CL-M CC-Link/LT Master Block Model
10.

Assignment of Buffer Memory

Data transfer between the PLC main unit and FX
PLC.
Use the FROM instruction to read data saved in the FX
The FROM instruction reads the data saved in the buffer memory (BFM) in the FX
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
The TO instruction writes data from devices (such as D and M) in the main unit to the buffer
memory (BFM) in the FX
10.1

Buffer memory list

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