1、 IEC 61158-3-7Edition 1.0 2007-12INTERNATIONAL STANDARD Industrial communication networks Fieldbus specifications Part 3-7:Data-link layer service definition Type 7 elements IEC 61158-3-7:2007(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY
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9、:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 61158-3-7Edition 1.0 2007-12INTERNATIONAL STANDARD Industrial communication networks Fieldbus specifications Part 3-7:Data-link layer service definition Type 7 eleme
10、nts INTERNATIONAL ELECTROTECHNICAL COMMISSION VICS 35.100.20;25.040.40 PRICE CODEISBN 2-8318-9413-1LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61158-3-7 IEC:2007(E)CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 1.1 Overview.7 1.2 S
11、pecifications.7 1.3 Conformance.7 2 Normative references.8 3 Terms,definitions,symbols,abbreviations and conventions.8 3.1 Reference model terms and definitions.8 3.2 Service convention terms and definitions.9 3.3 Data-link service terms and definitions.9 3.4 Symbols and abbreviations.13 3.5 Common
12、conventions.14 4 Data-link layer services and concepts.16 4.1 Field of application,object.16 4.2 General description of services.16 4.3 Sequences of primitives.21 4.4 Buffer writing.22 4.5 Buffer reading.24 4.6 Buffer transfer.25 4.7 Explicit request for buffer transfer.26 4.8 Unacknowledged message
13、 transfer.30 4.9 Acknowledged message transfer.32 Bibliography.35 Figure 1 Relationships of DLSAPs,DLSAP-addresses and group DL-addresses.11 Figure 2 General description of medium allocation.20 Figure 3 Primitives associated with the buffer writing service.23 Figure 4 Primitives associated with the
14、buffer reading service.24 Figure 5 Primitives associated with the buffer transfer service.25 Figure 6 Primitives associated with the specified explicit request for a buffer transfer.28 Figure 7 Primitives associated with the free explicit request for a buffer transfer.29 Figure 8 Primitives associat
15、ed with the unacknowledged message transfer request service.31 Figure 9 Primitives associated with the acknowledged message transfer request service.33 Table 1 Summary of DL-services and primitives for buffer transfers.22 Table 2 Summary of DL-services and primitives for message exchanges.22 Table 3
16、 DL-Put primitives and parameters.23 Table 4 DL-Get primitives and parameters.24 Table 5 DL-Buffer-Sent primitive and parameter.26 Table 6 DL-Buffer-Received primitive and parameter.26 Table 7 DL-Spec-Update primitives and parameters.28 Table 8 DL-Free-Update primitives and parameters.30 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.61158-3-7 IEC:2007(E)3 Table 9 DL-Message primitives and parameters.31 Table 10 DL-Message-Ack pri
