Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 242

6.
Set the network configuration as follows. The redundant system control system IP address is specified for the send
destination IP address.
[Navigation window]  [Parameter]  [Module Information]  [RJ71EN71]  [Port 1 Module Parameter (Ethernet)] 
[Basic Settings]  [External Device Configuration]
7.
Write the set parameters to the CPU module. Then reset the CPU module or power off and on the system.
[Online]  [Write to PLC]
In this setting example, default settings are used for the parameters other than those described. For the
parameter setting, refer to the chapter explaining the parameters in this manual. ( Page 241
PARAMETER SETTINGS)
1 FUNCTIONS
240
1.17 Redundant System Function