Appendix 3 Buffer Memory; List Of Buffer Memory Addresses - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

Appendix 3
The buffer memory is used to exchange data between the master/local module and the CPU module. Buffer memory values
are defaulted when the CPU module is reset or the system is powered off.
For the RJ71EN71 and RnENCPU, add the following value to the buffer memory addresses when setting
"Port 1 Network Type" to "Ethernet" and "Port 2 Network Type" to "CC-Link IE Field".
• Address (decimal): 2000000
• Address (hexadecimal): 1E8480H

List of buffer memory addresses

Address Address
(decimal) (hexadecimal)
0 to 1023 0H to 3FFH
1024 to 2047 400H to 7FFH
2048 to 10239 800H to 27FFH
10240 to 18431 2800H to 47FFH
18432 to 18463 4800H to 481FH
18464 to 18975 4820H to 4A1FH
18976 to 19455 4A20H to 4BFFH
19456 4C00H
19457 4C01H

19694 4CEEH
19695 4CEFH
19696 4CF0H
19697 4CF1H
19698 to 19711 4CF2H to 4CFFH
19712 4D00H
19713 4D01H

19950 4DEEH
19951 4DEFH
19952 4DF0H
19953 4DF1H
19954 to 19967 4DF2H to 4DFFH
19968 4E00H
19969 4E01H

20206 4EEEH
20207 4EEFH
20208 4EF0H
20209 4EF1H
20210 to 20223 4EF2H to 4EFFH
Buffer Memory
Name
Link device area
System area
RX offset/size information
System area
RY offset/size information
System area
RWw offset/size information
System area
Remote input (RX)
Remote output (RY)
Remote register (RWw)
Remote register (RWr)
Link special relay (SB)
Link special register (SW)
Station No.1 RX offset
Station No.1 RX size

Station No.120 RX offset
Station No.120 RX size
Station No.0 RX offset
Station No.0 RX size
Station No.1 RY offset
Station No.1 RY size

Station No.120 RY offset
Station No.120 RY size
Station No.0 RY offset
Station No.0 RY size
Station No.1 RWw offset
Station No.1 RWw size

Station No.120 RWw offset
Station No.120 RWw size
Station No.0 RWw offset
Station No.0 RWw size

Appendix 3 Buffer Memory

Initial Read, write
value
0 Read
Read, write
Read
• 18432 to 18433
for read and
write
• 18434 to 18463
for read only
• 18464 to 18495
for read and
write
• 18496 to 18975
for read only
0 Read
0 Read
0 Read
APPX
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A