7.2.3 Station configuration description file typesThe IEC 61850 standard defines SCL file types in the sequence of engineering. Thesefiles have a different definition, which is explained in IEC 61850–6. Three of the filetypes are used in the engineering process for an IED.• ICD = IED capability description• Capability description of the IED in logical nodes and their data. Noinformation about, for example, the communication configuration is included.• An IED is already extended by default data sets and report control blocks.They are predefined by ABB. Changes or additional data sets, for example,have to be done with IEC 61850 Configuration tool or IET600.• SCD = Station configuration description• A complete configuration description of all IEDs in a station and the fullengineering of process signals and communication structure is included. Thisincludes all the needed data sets and control blocks.• CID = configured IED description• The CID file contains the information needed for configuring one specificIED. The CID file contains the complete configuration description of onespecific IED. This includes the configured IED name, communication part,data sets and all control blocks.7.3 IEC 61850 engineering processThe IEC 61850 standard defines how information is communicated in a substation. Theinformation communication can be divided into different parts.• Description of the substation part, including the used logical nodes• Description of the IEDs with their logical nodes• Description of the communication network• Description of the engineering processWhen exporting a SCL file from PCM600, the tool builds a default substation structureand creates default data sets and control blocks for vertical communication between thesubstation client and IEDs. For more information, see the IEC 61850 standards.In the following example, it is assumed that PCM600 and IET600 are used as thesystem configuration tools. Another option is to use the IEC 61850 Configuration toolinside PCM600. In that case the SCL file export and import operations (steps 1 and 3)are not needed.Section 7 1MRS240044-IB AIEC 61850 communication engineering102 REF615REngineering Manual