Siemens SIMATIC TeleControl DNP3 Configuration Manual page 14

Functions and requirements
1.2 Configuration examples
Path redundancy using the serial interface
In the following example, the Ethernet interface and the serial interface are used with the
TIM 1531 IRC to set up redundant transmission paths.
● Ethernet interface for communication via Ethernet / Internet
● Serial interface for communication via a WAN network (dedicated line or dialup network)
Figure 1-2
Path redundancy is also possible over two Ethernet networks.
14
Communication via redundant paths
Configuration Manual, 11/2018, C79000-G8976-C508-01
Configuration - DNP3