Redundant System (Redundant Cpu) - Mitsubishi Electric Q Series Reference Manual

2 SYSTEM CONFIGURATION
MELSEC-Q

2.1.2 Redundant system (Redundant CPU)

The redundant system refers to a system where a system including a network module
is dualized by connecting another network module to another redundant CPU
(redundant system).
If failure of the control system CPU or a network module occurs, the redundant system
2
switches the control system to the standby system, allowing system control and data
linking to be continued on the standby system.
For further information, refer to Section 7.10.1.
MELSECNET/H PLC to PLC network
Control system Standby system
MELSECNET/H remote I/O network
2 - 2 2 - 2