The LON Protocol M14804-32 v2The LON protocol is specified in the LonTalkProtocol Specification Version 3from Echelon Corporation. This protocol is designed for communication in controlnetworks and is a peer-to-peer protocol where all the devices connected to thenetwork can communicate with each other directly. For more information of thebay-to-bay communication, refer to the section Multiple command function.Hardware and software modules M14804-35 v4The hardware needed for applying LON communication depends on theapplication, but one very central unit needed is the LON Star Coupler and opticalfibres connecting the star coupler to the IEDs. To interface the IEDs from theMicroSCADA with Classic Monitor, application library LIB520 is required.The HV Control 670 software module is included in the LIB520 high-voltageprocess package, which is a part of the Application Software Library inMicroSCADA applications.The HV Control 670 software module is used for control functions in the IEDs.The module contains a process picture, dialogues and a tool to generate a processdatabase for the control application in MicroSCADA.When using MicroSCADA Monitor Pro instead of the Classic Monitor, SA LIB isused together with 670 series Object Type files.The HV Control 670 software module and 670 series Object Typefiles are used with both 650 and 670 series IEDs.Use the LON Network Tool (LNT) to set the LON communication. This is asoftware tool applied as one node on the LON bus. To communicate via LON, theIEDs need to know• The node addresses of the other connected IEDs.• The network variable selectors to be used.This is organized by LNT.The node address is transferred to LNT via the local HMI by setting the parameterServicePinMsg = Yes. The node address is sent to LNT via the LON bus, or LNTcan scan the network for new nodes.The communication speed of the LON bus is set to the default of 1.25 Mbit/s. Thiscan be changed by LNT.20.4.2 MULTICMDRCV and MULTICMDSND SEMOD119881-1 v3Section 20 1MRK 511 401-UEN AStation communication554 Bay control REC670 2.2 IECApplication manual
