Table 632:IRF contact X319Case Terminal Description3U full 19” X319-1 Closed; no IRF, and Vaux connectedX319-2 Closed; IRF, or Vaux disconnectedX319-3 IRF, common18.4 Communication connectionsThe IED's LHMI is provided with an RJ-45 connector. The connector is intended forconfiguration and setting purposes.Rear communication via the X1/LAN1 connector uses a communication module with theoptical LC Ethernet connection.The HMI connector X0 is used for connecting an external HMI to the IED. The X0/HMIconnector must not be used for any other purpose.Rear communication via the X8/EIA-485/IRIG-B connector uses a communicationmodule with the galvanic EIA-485 serial connection.18.4.1 Ethernet RJ-45 front connectionThe IED's LHMI is provided with an RJ-45 connector designed for point-to-point use. Theconnector is intended for configuration and setting purposes. The interface on the PC hasto be configured in a way that it obtains the IP address automatically if the DHCPServeris enabled in LHMI. There is a DHCP server inside IED for the front interface only.The events and setting values and all input data such as memorized values and disturbancerecords can be read via the front communication port.Only one of the possible clients can be used for parametrization at a time.• PCM600• LHMIThe default IP address of the IED through this port is 10.1.150.3.The front port supports TCP/IP protocol. A standard Ethernet CAT 5 crossover cable isused with the front port.Section 18 1MRK 506 335-UUS AIED physical connections798Technical manual