Mitsubishi Electric MELSEC iQ-R Series Configuration Manual page 35

Redundant system for CC-Link IE Field Network
With a redundant configuration of CC-Link IE Field Network master/local modules or remote head modules, the new control
system can continue data link if an error occurs in the control system.
The following table lists the redundant system configurations for CC-Link IE Field Network.
System configuration
Redundant Redundant master
specified station station
Redundant slave station
Redundant Redundant line
configuration of
entire network
There are no restrictions on network topologies for redundant systems. However, the ring topology is recommended to
configure a redundant system because the loopback function avoids system switching when a cable disconnection or a faulty
station is generated in a system other than the redundant system.
■ Redundant master station
Mount a CC-Link IE Field Network master/local module on each of the base units of the control system and standby system. If
an error occurs in the master station of the control system, the submaster station of the standby system performs control.
(1)
(2) (3)
(5)
For details, refer to "Redundant System Function" of the following manual.
 MELSEC iQ-R CC-Link IE Field Network User's Manual (Application)
Overview
A redundant configuration of the master station is available.
When the redundant master station is used as the own station, the station can be connected to the following.
• Slave station
• Redundant slave station
A redundant configuration of the slave station is available.
When the redundant slave station is used as the own station, the station can be connected to the following.
• Master station or redundant master station
• Slave station
• Redundant slave station
A redundant configuration of the entire network including the master station, slave station, and transmission
path is available.
The redundant line is configured in combination with the redundant master station and redundant slave
station with the remote head module. When a communication error occurs in the master station or slave
station, the control is continued by the system switching of the whole network instead of the faulty station.
For the redundant line, the time required for system switching is shorter than the redundant master station or
redundant slave station.
(1)
(4)
(4)
(2) (3)
(1) CC-Link IE Field Network master/local module
(2) Process CPU
(3) Redundant function module
(4) Tracking cable
(5) Remote head module
1 SYSTEM CONFIGURATION
1.1 Overall Configuration
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