Communications Using Rx, Ry, Rwr, And Rww - Mitsubishi Electric MELSEC iQ-R Series User Manual

Communications using RX, RY, RWr, and RWw

This allows data to be exchanged in units of bits and in units of words between the master station and slave station.
Master station and remote stations
■Unicast mode
1:1 communications between the master station and each remote station. Remote stations do not communicate with each
other.
Class B
RCPU
X
0000H 0000H
Ø
001FH
0020H
003FH
Y
0000H
Ó
001FH
0020H
003FH
Ò
W
0000H
Ø
0003H
0004H
0007H
0000H
Ó
0003H
0004H
007FH
No.0, No.1, No.2: Station No.0 (master station), station No.1, station No.2
No.1, No.2: Send range: to station No.1, send range: to station No.2
No.1, No.2: Send range: from station No.1, send range: from station No.2
Class A: CC-Link IE TSN Class A device
Class B: CC-Link IE TSN Class B device
• Output from the master station
 The device of the CPU module turns on.
 The device status of the CPU module is stored in the link devices (RY, RWw) of the master station by link refresh.
 The status of the link devices (RY, RWw) of the master station is stored in the link devices (RY, RWw) of each remote station by cyclic data transfer
processing.
 The status of the link devices (RY, RWw) of the remote station is output to the external device.
• Input from the remote station
 The status of the external device is stored in the link devices (RX, RWr) of the remote station.
 The status of the link devices (RX, RWr) of the remote station is stored in the link devices (RX, RWr) of the master station by cyclic data transfer processing.
 The status of the link devices (RX, RWr) of the master station is stored in the devices of the CPU module by link refresh.
■Multicast mode
• The master station and remote station send data on the line in multicast mode in each send range.
• The master station receives all data, but the remote station discards the data of another remote station. Therefore,
communication at each station is performed in the same manner as unicast mode. ( Page 19 Unicast mode)
No.0
RX
0000H
No.1
001FH
No.2
RY
0000H
oNo.1
001FH
oNo.2
×
Ô
RWr
0000H
No.1
0003H
No.2
RWw
0000H
oNo.1
0003H
oNo.2
Class B Class A
No.1
RX
0000H
mNo.1
001FH
RY
0000H
No.1
001FH
RWr
0000H
mNo.1
0003H
RWw
0000H
No.1
0003H
No.2
RX
mNo.2
Ö
RY
No.2
RWr
mNo.2
Õ
RWw
No.2
1 FUNCTIONS
1.1 Cyclic Transmission
1
19