Redundant DNP3 Communication Using a Siemens S7 PLC DNP3 Visual Overview Summary DMC provided software to be loaded onto a network of S7-300 PLCs to send and recieve data to and from train system substations. This data was transmitted using DNP3, a robust and redundant TCP/IP communication protocol. Customer Benefits Prevented expensive hardware upgrades to communicate using DNP3 Provided multiple connections and message handshakes that guaranteed delivery of information Able to install on both future stations and all existing stations TechnologiesDNP3 Communication Protocol Siemens S7-300 PLC Siemens CP343 Ethernet Module Simantic Manager and Step 7 (Ladder, SCL, STL) SCADA Newtork Solution The customer needed to communicate important substation information using DNP3. All of the substati

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