Mitsubishi Electric MELSEC iQ-R Series User Manual page 151

Automatic update buffer
This area stores data automatically updated when transient transmission (communications using the automatic update buffer)
is performed with an intelligent device station. The automatic update buffer size of intelligent device stations is set in "Network
Configuration Settings" under "Basic Settings". ( Page 60 Network Configuration Settings)
The following figure shows an example of communications using the automatic update buffer.
Master station
CPU module
Automatic
update buffer
1.
RIFR
for the first
station
2.
D
1.
The automatic update buffer for the first station is accessed.
2.
The data specified in the control data is stored in the device of the CPU module.
*1 For timing of the automatic update, refer to the manual for the AJ65BT-R2N. ( CC-Link System RS-232 Interface Module User's
Manual (Nonprocedural Protocol Mode))
Ver.2-compatible remote input (RX) and Ver.2-compatible remote output (RY)
This buffer memory area is used when the remote net Ver.2 mode or remote device net Ver.2 mode is selected.
In the remote net Ver.2 mode, data are stored in the remote input (RX) and remote output (RY) in all slave stations (including
Ver.1-compatible slave stations).
Page 20 Remote net Ver.2 mode
Page 24 Remote device net Ver.2 mode
For the master station, data input from slave stations are stored.
For local stations, data input from the master station are stored.
■Storage location for each station
The storage locations change depending on the number of occupied stations and extended cyclic settings in slave stations.
The storage locations for each station can be checked using Slave station offset, size information (Un\G992 to Un\G1503).
( Page 146 Slave station offset, size information)
Remote I/O station
(station No.: 1, number of
occupied stations: 1,
number of remote I/O station
Master station points: 16 points)
Address Remote input (RX)
Station
4000H
RX F to RX 0
No.1
Station 4001H
RX 1F to RX 10
No.2
4002H
RX 2F to RX 20
4003H
RX 3F to RX 30
4004H
RX 4F to RX 40
Station
· ·
No.3
400FH
RX FF to RX F0
4010H
RX 10D to RX 100
4011H
RX 11F to RX 110
4012H
RX 12F to RX 120
Station
· ·
No.7
400DH
RX 1DF to RX 1D0
400EH
RX 1EF to RX 1E0
· ·
41FCH RX1FCF to RX1FC0
41FDH RX1FDF to RX1FD0
41FEH RX1FEF to RX1FE0
41FFH RX1FFF to RX1FF0
*1
Automatic update
The last two bits of RX/RY cannot be used for communications between the master station and a local station.
(In the example below, RYEE and RYEF cannot be used.)
Remote I/O station
(station No.: 2, number of
occupied stations: 1,
number of remote I/O
station points: 32 points)
X0F to X00
X1F to X10
X2F to X20
AJ65BT-R2N (first station)
Buffer memory
Automatic
update
buffer
memory
Local station
(station No.: 3, number of
occupied stations: 4,
extended cyclic setting: double)
Remote output (RY) Address
Station
4200H
RY F to RY 0
No.1
4201H Station
RY 1F to RY 10
No.2
4202H
RY 2F to RY 20
4203H
RY 3F to RY 30
4204H
RY 4F to RY 40
Station
· ·
No.3
420FH
RY FF to RY F0
4210H
RY 10D to RY 100
4211H
RY 11F to RY 110
4212H
RY 12F to RY 120
Station
· ·
No.7
421DH
RY 1DF to RY 1D0
421EH
RY 1EF to RY 1E0
· ·
RY1FCF to RY1FC0 43FCH
RY1FDF to RY1FD0 43FDH
RY1FEF to RY1FE0 43FEH
RY1FFF to RY1FF0 43FFH
Appendix 3 Buffer Memory
Local station
(station No.: 7, number of
occupied stations: 4,
extended cyclic setting: double)
Remote output (RY) Address
Station
4200H
RY F to RY 0
No.1
4201H Station
RY 1F to RY 10
No.2
4202H
RY 2F to RY 20
4203H
RY 3F to RY 30
4204H
RY 4F to RY 40
Station
· ·
No.3
420FH
RY FF to RY F0
4210H
RY 10D to RY 100
4211H
RY 11F to RY 110
4212H
RY 12F to RY 120
Station
· ·
No.7
421DH
RY 1DF to RY 1D0
421EH
RY 1EF to RY 1E0
· ·
RY1FCF to RY1FC0 43FCH
RY1FDF to RY1FD0 43FDH
RY1FEF to RY1FE0 43FEH
RY1FFF to RY1FF0 43FFH
APPX
149
A