Mitsubishi Electric MELSEC iQ-R Series User Manual page 149

The following figure shows an example of connecting the local station with the extended cyclic settings and remote I/O
stations with the remote I/O station points setting.
Local station
(station No.: 1, number of
occupied stations: 2, extended
Master station cyclic setting: octuple)
Buffer memory area Value
Station No.1 RX offset 4000H
Station No.1 RX size 24 (18H)
Station No.2 RX offset 4000H
Station No.2 RX size 0 (Default)
Station No.3 RX offset 4018H
Station No.3 RX size 1 (1H)
Station No.4 RX offset 4018H
Station No.4 RX size 1 (1H)
Station No.1 RY offset 4200H
Station No.1 RY size 24 (18H)
Station No.2 RY offset 4200H
Station No.2 RY size 0 (Default)
Station No.3 RY offset 4218H
Station No.3 RY size 1 (1H)
Station No.4 RY offset 4218H
Station No.4 RY size 1 (1H)
Station No.1 RWw offset 4400H
Station No.1 RWw size 64 (40H)
Station No.2 RWw offset 4400H
Station No.2 RWw size 0 (Default)
Station No.3 RWw offset 4400H
Station No.3 RWw size 0 (Default)
Station No.4 RWw offset 4400H
Station No.4 RWw size 0 (Default)
Station No.1 RWr offset 4C00H
Station No.1 RWr size 64 (40H)
Station No.2 RWr offset 4C00H
Station No.2 RWr size 0 (Default)
Station No.3 RWr offset 4C40H
Station No.3 RWr size 0 (Default)
Station No.4 RWr offset 4C40H
Station No.4 RWr size 0 (Default)
Remote I/O station
(station No.: 3, number of
occupied stations: 1, number of
remote I/O station points: 8 points)
Description
Start buffer memory address of RX in the station number 1
384 (number of points of RX)  16 = 24 words
Because the station occupies two stations, check the area in the station number 1.
Because the station occupies two stations, check the area in the station number 1.
Start buffer memory address of RX in the station number 3
The lower eight bits of the area (buffer memory address: 4018H) are the corresponding size of
RX in the station number 3; however, 1 is stored, because a value less than one word is rounded
up.
Start buffer memory address of RX in the station number 4
The upper eight bits of the area (buffer memory address: 4018H) are the corresponding size of
RX in the station number 4; however, 1 is stored, because a value less than one word is rounded
up.
Start buffer memory address of RY in the station number 1
384 (number of points of RY)  16 = 24 words
Because the station occupies two stations, check the area in the station number 1.
Because the station occupies two stations, check the area in the station number 1.
Start buffer memory address of RY in the station number 3
The lower eight bits of the area (buffer memory address: 4018H) are the corresponding size of
RY in the station number 3; however, 1 is stored, because a value less than one word is rounded
up.
Start buffer memory address of RY in the station number 4
The upper eight bits of the area (buffer memory address: 4018H) are the corresponding size of
RY in the station number 4; however, 1 is stored, because a value less than one word is rounded
up.
Start buffer memory address of RWw in the station number 1
2 (number of occupied stations)  32 (extended cyclic settings) = 64
Because the station occupies two stations, check the area in the station number 1.
Because the station occupies two stations, check the area in the station number 1.
Start buffer memory address of RWw in the station number 3
Buffer memory area size of RWw in the station number 3
Start buffer memory address of RWw in the station number 4
Buffer memory area size of RWw in the station number 4
Start buffer memory address of RWr in the station number 1
2 (number of occupied stations)  32 (extended cyclic settings) = 64
Because the station occupies two stations, check the area in the station number 1.
Because the station occupies two stations, check the area in the station number 1.
Start buffer memory address of RWr in the station number 3
Buffer memory area size of RWr in the station number 3
Start buffer memory address of RWr in the station number 4
Buffer memory area size of RWr in the station number 4
Remote I/O station
(station No.: 4, number of
occupied stations: 1, number of
remote I/O station points: 8 points)
Appendix 3 Buffer Memory
A
APPX
147