Mitsubishi Electric MELSEC iQ-R Series User Manual page 46

Single line
In single line, all the stations are connected to a single network line. Two types of single line are available: redundant master
station and redundant slave station.
For the redundant master station, refer to the following.
 MELSEC iQ-R CC-Link IE Field Network User's Manual (Application)
■Redundant slave station
For the redundant slave station, the two remote head modules are connected as redundant remote head module. When an
error occurs in the remote head module of the control system, the control switches to the remote head module of the standby
system to control the slave station and continue the data link.
(2)
(1) Master station
(2) Local station (control system)
(3) Local station (standby system)
(4) Intelligent device station (The remote head module is redundant with remote head No.1 being the control system and remote head No.2 being the standby
system.)
Redundant line
In redundant line, two network lines are prepared and the remote head module is connected to each network line.
When an error occurs in the network of the control system, the control switches to the network of the standby system to
control the redundant system and continue the data link.
Ensure that the configuration of the network of both systems is the same. For details, refer to the following.
 MELSEC iQ-R CC-Link IE Field Network User's Manual (Application)
1 FUNCTIONS
44
1.8 Redundant Function
(1)
(3) (4)