1、INTERNATIONALSTANDARDIEC61850-9-1First edition2003-05Communication networks andsystems in substations Part 9-1:Specific Communication ServiceMapping(SCSM)Sampled values over serial unidirectionalmultidrop point to point linkReference numberIEC 61850-9-1:2003(E)Copyright International Electrotechnica
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9、without license from IHS-,-INTERNATIONALSTANDARDIEC61850-9-1First edition2003-05Communication networks andsystems in substations Part 9-1:Specific Communication ServiceMapping(SCSM)Sampled values over serial unidirectionalmultidrop point to point link IEC 2003 Copyright-all rights reservedNo part of
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12、No reproduction or networking permitted without license from IHS-,-2 61850-9-1 IEC:2003(E)CONTENTSFOREWORD.4INTRODUCTION.61Scope.72Normative references.83Terms and definitions.84Abbreviations.85Principle of mapping to the serial unidirectional multidrop point to point link.95.1Communication stack.95
13、.1.1Physical layer.105.1.2Link layer.115.1.3Network layer.125.1.4Transport layer.125.1.5Session layer.125.1.6Presentation layer.125.1.7Application layer.125.2Restrictions.126Mapping of common types.126.1Object name.126.2Object reference.127Mapping of the model for transmission of sampled values usin
14、g multicast.137.1Mapping of the multicast sampled values services.137.2Mapping of the update of the sampled value buffer.147.3Additional definitions for the transmission of sampled analogue values.147.3.1Application layer functionality.147.3.2Presentation layer functionality.157.3.3Transport layer f
15、unctionality.158Mapping of the common data classes.168.1Overview.168.2Additional definitions for the mapping of the common data classes.16Annex A(normative)Definition of data set instances and related multicast sampledvalue control instances.19Annex B(informative)Calculation of required bandwidth.22
16、Annex C(informative)Definitions of logical node instance names and data namesrelated to the data sets.24Annex D(informative)Electronic transformers block diagram and configuration example.28Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-61850-9-1 IEC:2003(E)3 Figure 1 Example for the use of the serial unidirectional multidrop point to point link.7Figure 2 Communication stac