Redundant System - Mitsubishi Electric MELSEC Q Series Reference Manual

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. (
36
CC-Link IE Controller
Network module
Control
station No.3
CC-Link IE Controller Network
Normal
Control system
station No.1
Tracking cable
Page 138, Section 4.7)
Normal
station No.4
Normal
Standby system
station No.2