Mitsubishi Electric MELSEC iQ-R Series User Manual page 148

Slave station offset, size information
In the remote net Ver.2 mode and remote device net Ver.2 mode, the assignment of RX, RY, RWw, and RWr for each station
differs depending on the extended cyclic settings and the remote I/O station points setting.
■Offset
This area stores the start buffer memory addresses of RX, RY, RWw, and RWr assigned for each station.
When two or more stations are occupied, a value is stored only in the start buffer memory address of the first station. For
example, when the station number 1 occupies two stations, values are stored only in the RX, RY, RWw, RWr offset, and size
information of the station number 1 and those for the station number 2 remain the default.
■Size
This area stores the sizes of RX, RY, RWw, and RWr assigned for each station (unit: word).
When the size is less than one word, the storage value is rounded up; therefore, 1 is stored.
When eight points are set in the remote I/O station points setting, 1 is stored. For the remote I/O station points setting, refer to
the following.
• Page 39 Remote I/O station points setting
If the target station is a reserved station, 0000H is stored.
The following table lists the relationship between RX/RY/RWw/RWr offset/size information and buffer memory addresses for
each station.
Buffer memory address
Hexadecimal
3E0H
3E1H

45EH
45FH
460H
461H

4DEH
4DFH
4E0H
4E1H

55EH
55FH
560H
561H

5DEH
5DFH
APPX
146
Appendix 3 Buffer Memory
Decimal
992
993

1118
1119
1120
1121

1246
1247
1248
1249

1347
1375
1376
1377

1502
1503
Item
Station No.1 RX offset
Station No.1 RX size

Station No.64 RX offset
Station No.64 RX size
Station No.1 RY offset
Station No.1 RY size

Station No.64 RY offset
Station No.64 RY size
Station No.1 RWw offset
Station No.1 RWw size

Station No.64 RWw offset
Station No.64 RWw size
Station No.1 RWr offset
Station No.1 RWr size

Station No.64 RWr offset
Station No.64 RWr size
Default (hexadecimal)
0000H
0000H

0000H
0000H
0000H
0000H

0000H
0000H
0000H
0000H

0000H
0000H
0000H
0000H

0000H
0000H