from the control center and also from other IEDs via bay-to-bay horizontalcommunication. For LON communication an SLM card should be ordered for theIEDs.The fibre optic LON bus is implemented using either glass core or plastic core fibreoptic cables.Table 13:Specification of the fibre optic connectorsGlass fibre Plastic fibreCable connector ST-connector snap-in connectorCable diameter 62.5/125 m 1 mmMax. cable length 1000 m 10 mWavelength 820-900 nm 660 nmTransmitted power -13 dBm (HFBR-1414) -13 dBm (HFBR-1521)Receiver sensitivity -24 dBm (HFBR-2412) -20 dBm (HFBR-2521)9.1.2 The LON Protocol M14804-32 v2The LON protocol is specified in the LonTalkProtocol Specification Version 3 fromEchelon Corporation. This protocol is designed for communication in control networksand is a peer-to-peer protocol where all the devices connected to the network cancommunicate with each other directly. For more information of the bay-to-baycommunication, refer to the section Multiple command function.9.1.3 Hardware and software modules M14804-35 v4The hardware needed for applying LON communication depends on the application,but one very central unit needed is the LON Star Coupler and optical fibres connectingthe star coupler to the IEDs. To interface the IEDs from the MicroSCADA with ClassicMonitor, application library LIB520 is required.The HV Control 670 software module is included in the LIB520 high-voltage processpackage, which is a part of the Application Software Library in MicroSCADAapplications.The HV Control 670 software module is used for control functions in the IEDs. Themodule contains a process picture, dialogues and a tool to generate a process databasefor the control application in MicroSCADA.When using MicroSCADA Monitor Pro instead of the Classic Monitor, SA LIB is usedtogether with 670 series Object Type files.Section 9 1MRK 502 073-UUS AEstablishing connection and verifying the LON communication102 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062Commissioning manual
