Smart 1-LineTM Instruction Manual Rev 1.01 www.utilityrelay.comPage 15Figure 14: Modbus Settings - Example for RS-485 Direct ConnectionSelect “Modbus TCP” if your trip unit R-485 network connects to an external Ethernet gateway.(See Figure 3) See example setting window below.Enter either the Server name or the IP address of the external Ethernet gateway device.Enter the Modbus port of the external Ethernet gateway device.Figure 15: Modbus Settings - Example for External Gateway connection