en05000830.vsdIED 3SendData-setReceiveReceiveLNLNLNLNLNIED 2SendData-setReceiveReceiveLNLNLN LNIED 1SendData-setReceiveReceiveLNLNLNLNLNLNIEC 61850 SubnetworkIEC05000830 V1 ENFigure 53: IEC 61850: Horizontal communication principleFigure 53 shows an example with three IEDs where each one communicates withall the others.When a GOOSE message is to be sent is defined by configuring the data set withthe defined trigger option and the GOOSE control block (GoCB). This engineeringprocess is done in the IET600 station configuration tool. The task involvesconfiguring lists with the signal, value and quality (data attributes) that belong tothe GOOSE message dataset.In the opposite direction the standard only defines the IED as a receiver of theGOOSE message. How the GOOSE input signals are handled must be defined inthe IED application configuration. The SCD file generated by the IET600 (or anyother station configuration tool) contains these GOOSE data sets as input data. Theinput data must be connected to a GOOSE receive function block(GOOSEBINRCV and GOOSEINTLKRCV) in SMT.7.1.3 Station configuration description file typesThe IEC 61850 standard defines SCL-file types in the sequence of engineering.These files have a different definition, which is explained in IEC 61850–6. Threeof these file types are used in the engineering process for an IED.• ICD = IED Capability DescriptionThe IED name in an exported .icd file is always namedTEMPLATE.1MRK511240-UEN B Section 7IEC 61850 communication engineering670 series 71Engineering Manual