1、 IEC 62439-4Edition 1.0 2010-02INTERNATIONAL STANDARD Industrial communication networks High availability automation networks Part 4:Cross-network Redundancy Protocol(CRP)IEC 62439-4:2010(E)LICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BURE
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9、22 919 03 00 LICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 62439-4Edition 1.0 2010-02INTERNATIONAL STANDARD Industrial communication networks High availability automation networks Part 4:Cross-network Redundancy Protocol(CRP)INTE
10、RNATIONAL ELECTROTECHNICAL COMMISSION XICS 25.040,35.040 PRICE CODEISBN 2-8318-1081-4 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62439-4 IEC:2010(E)CONTENTS F
11、OREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references.7 3 Terms,definitions,abbreviations,acronyms,and conventions.7 3.1 Terms and definitions.7 3.2 Abbreviations and acronyms.7 3.3 Conventions.7 4 CRP overview.8 5 CRP nodes.8 6 CRP LAN topology.8 7 CRP key components.10 7.1 CRP general protocol
12、 operation.10 7.1.1 Doubly-attached nodes(DANCs).10 7.1.2 Singly attached nodes.11 7.2 CRP statistics.11 7.3 CRP Network_Status_Table.12 7.4 CRP recovery time.15 7.4.1 Recovery time calculation.15 7.4.2 Maximum repair time.16 7.5 CRP multicast messages.16 7.5.1 Sending.16 7.5.2 Receiving.16 7.6 CRP
13、unicast messages.16 7.6.1 Sending a frame.16 7.6.2 Receiving a frame.17 7.7 CRP redundancy information.17 7.8 CRP redundancy statistics.17 8 CRP protocol.17 8.1 CRP singly attached node.17 8.2 CRP doubly attached node.17 8.3 CRP Installation,configuration and repair.17 8.4 CRP LRE model attributes.1
14、8 8.4.1 Attribute specification.18 8.4.2 Impact of LRE configuration attributes.22 8.5 CRP encoding of the DiagnosticFrame.23 8.6 CRP Encoding of the AnnunciationFrame.24 8.7 CRP common protocol.26 8.7.1 AnnunciationFrames.26 8.7.2 DiagnosticFrames.26 8.7.3 Detection of duplicate Node_Index.27 8.7.4
15、 Detection of duplicate Node_Name.27 8.7.5 Failure detection based on arrival of DiagnosticFrames.27 8.7.6 Status array entries.28 8.7.7 Other failure detection.28 8.8 CRP operational messages.28 LICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPL
16、Y BUREAU.62439-4 IEC:2010(E)3 8.8.1 Load balancing.28 8.8.2 LAN and port maintenance.28 8.8.3 Selecting transmission path.29 8.8.4 Selecting reception adapter.30 8.8.5 Crossed_cable_status.30 8.8.6 Configured parameters.30 8.9 CRP services.31 8.9.1 Configuration options and services.31 8.9.2 LAN redundancy service specification.31 9 CRP Management Information Base(MIB).38 Bibliography.41 Figure 1 CRP stack architecture.8 Figure 2 CRP single LAN topography.9 Figure 3 CRP double LAN topology.9 Fig
