Mitsubishi Electric MELSEC-Q Series - Redundant System

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2.1.2 Redundant system
A redundant system is a system in which a basic system including a CPU module, a power supply module, a network
module is backed up with the other system.
By mounting a CC-Link IE Controller Network module to each main base unit of a redundant CPU, two CC-Link IE
Controller Network modules can be used in a redundant system. ( Page 138, Section 4.7)
CC-Link IE Controller Network
Tracking cable
Control system Standby system
CC-Link IE Controller
Network module
Control
station No.3
Normal
station No.4
Normal
station No.1
Normal
station No.2