1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationIndustrial communication networks ProfilesPart 3-18: Functional safety fieldbuses Additional specifications for CPF 18BS EN 61784-3-18:2011National forewordThis British Standard
2、is the UK implementation of EN 61784-3-18:2011. It is identical to IEC 61784-3-18:2011. It supersedes DD IEC/PAS 61784-3-18:2009,which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee AMT/7, Industrial communications: process measurement and control, includin
3、g fieldbus.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 68192 9 ICS 13.110, 25.040.4
4、0, 35.100.05 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2011.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 617
5、84-3-18:2011EUROPEAN STANDARD EN 61784-3-18 NORME EUROPENNE EUROPISCHE NORM July 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussel
6、s 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61784-3-18:2011 E ICS 13.110; 25.040.40; 35.100.05 English version Industrial communication networks - Profiles - Part 3-18: Functional safety fieldbuses - Additional specific
7、ations for CPF 18 (IEC 61784-3-18:2011) Rseaux de communication industriels - Profils - Partie 3-18: Bus de terrain scurit fonctionnelle - Spcifications supplmentaires pour le CPF 18 (CEI 61784-3-18:2011) Industrielle Kommunikationsnetze - Profile - Teil 3-18: Funktional sichere bertragung bei Feldb
8、ussen - Zustzliche Festlegungen fr die Kommunikationsprofilfamilie 18 (IEC 61784-3-18:2011) This European Standard was approved by CENELEC on 2011-05-25. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the
9、 status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, Ger
10、man). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgari
11、a, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61784-3
12、-18:2011EN 61784-3-18:2011 Foreword The text of document 65C/639/FDIS, future edition 1 of IEC 61784-3-18, prepared by SC 65C, Industrial networks, of IEC TC 65, Industrial-process measurement, control and automation, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 6
13、1784-3-18 on 2011-05-25. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates were fixed: latest date by which the EN has
14、to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-02-25 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2014-05-25 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the I
15、nternational Standard IEC 61784-3-18:2011 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60204-1 NOTE Harmonized as EN 60204-1. IEC 61131-6 NOTE Harmonized as EN
16、 61131-61). IEC 61158 series NOTE Harmonized in EN 61158 series. IEC 61326-3-1 NOTE Harmonized as EN 61326-3-1. IEC 61326-3-2 NOTE Harmonized as EN 61326-3-2. IEC 61496 series NOTE Harmonized in EN 61496 series. IEC 61508-1:2010 NOTE Harmonized as EN 61508-1:2010. IEC 61508-4:2010 NOTE Harmonized as
17、 EN 61508-4:2010. IEC 61508-5:2010 NOTE Harmonized as EN 61508-5:2010. IEC 61511 series NOTE Harmonized in EN 61511 series. IEC 61784-1 NOTE Harmonized as EN 61784-1. IEC 61784-5 series NOTE Harmonized in EN 61784-5 series. IEC 61800-5-2 NOTE Harmonized as EN 61800-5-2. IEC 62061 NOTE Harmonized as
18、EN 62061. ISO 10218-1 NOTE Harmonized as EN ISO 10218-1. ISO 12100-1 NOTE Harmonized as EN ISO 12100-1. ISO 13849-1 NOTE Harmonized as EN ISO 13849-1. 1)At draft stage. BS EN 61784-3-18:2011EN 61784-3-18:2011 ISO 13849-2 NOTE Harmonized as EN ISO 13849-2. ISO 14121 NOTE Harmonized as EN ISO 14121. _
19、 BS EN 61784-3-18:2011EN 61784-3-18:2011 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited appl
20、ies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 61158-3-22 - Industri
21、al communication networks - Fieldbus specifications - Part 3-22: Data-link layer service definition - Type 22 elements - - IEC 61158-4-22 - Industrial communication networks - Fieldbus specifications - Part 4-22: Data-link layer protocol specification - Type 22 elements - - IEC 61158-5-22 - Industri
22、al communication networks - Fieldbus specifications - Part 5-22: Application layer service definition -Type 22 elements - - IEC 61158-6-22 - Industrial communication networks - Fieldbus specifications - Part 6-22: Application layer protocol specification - Type 22 elements - - IEC 61508 Series Funct
23、ional safety of electrical/electronic/programmable electronic safety-related systems EN 61508 Series IEC 61508-2 2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 2: Requirements for electrical/electronic/programmable electronic safety-related syst
24、ems EN 61508-2 2010 IEC 61784-2 2010 Industrial communication networks - Profiles - Part 2: Additional fieldbus profiles for real-time networks based on ISO/IEC 8802-3 EN 61784-2 2010 IEC 61784-3 2010 Industrial communication networks - Profiles - Part 3: Functional safety fieldbuses - General rules
25、 and profile definitions EN 61784-3 2010 IEC 61918 - Industrial communication networks - Installation of communication networks in industrial premises EN 61918 - ISO/IEC 10731 - Information technology - Open Systems Interconnection - Basic reference model - Conventions for the definition of OSI serv
26、ices - - BS EN 61784-3-18:201161784-3-18 IEC:2011 CONTENTS 0 Introduction . . 7 0.1 General . 7 0.2 Patent declaration . 9 1 Scope 10 2 Normative references . 10 3 Terms, definitions, symbols, abbreviated terms and conventions 11 3.1 Terms and definitions . 11 3.1.1 Common terms and definitions 11 3
27、.1.2 CPF 18: Additional terms and definitions . 15 3.2 Symbols and abbreviated terms 16 3.2.1 Common symbols and abbreviated terms 16 3.2.2 CPF 18: Additional symbols and abbreviated terms . 17 3.3 Conventions . 17 4 Overview of FSCP 18/1 (SafetyNET p) . . 19 4.1 General . . 19 4.2 FSCP 18/1 . 19 5
28、General . 20 5.1 External documents providing specifications for the profile 20 5.2 Safety functional requirements . 20 5.3 Safety measures . 20 5.4 Safety communication layer structure 21 5.5 Relationships with FAL (and DLL, PhL) . . 22 5.5.1 General . 22 5.5.2 Data Types . 22 6 Safety communicatio
29、n layer services . 22 6.1 General elements 22 6.1.1 General . 22 6.1.2 Safety object dictionary 22 6.1.3 Safety process data object (SPDO) 22 6.1.4 Safety heartbeat (SHB) . 22 6.1.5 Safety delay monitoring (SDM) 23 6.2 Communication relation . 23 7 Safety communication layer protocol . 24 7.1 Safety
30、 PDU format . 24 7.1.1 General . 24 7.1.2 Safety process data objects (SPDO) . 24 7.1.3 Safety heartbeat (SHB) . 26 7.1.4 Safety PDUs embedded in a Type 22 PDU . 28 7.2 Safety communication layer management (SALMT) . . 28 7.3 Safety process data communication 30 7.4 Safety heartbeat 32 7.5 Delay mon
31、itoring . 33 8 Safety communication layer management . 34 8.1 Parameter handling . . 34 8.2 Safety object dictionary . 34 BS EN 61784-3-18:201161784-3-18 IEC:2011 8.2.1 General . 34 8.2.2 Communication profile section . 35 8.2.3 Standardized device profile section 51 9 System requirements 51 9.1 Ind
32、icators and switches . 51 9.1.1 Indicator states and flash rates 51 9.1.2 Indicators 51 9.1.3 Switches 52 9.2 Installation guidelines . 52 9.3 Safety function response time . . 52 9.3.1 General . 52 9.3.2 Determination of FSCP 18/1 time expectation behavior 53 9.3.3 Calculation of the worst case saf
33、ety function response time 53 9.4 Duration of demands 53 9.5 Constraints for calculation of system characteristics . 53 9.5.1 Safety related constraints . 53 9.5.2 Probabilistic considerations . 55 9.6 Maintenance . 55 9.7 Safety manual . 55 10 Assessment 55 Annex A (informative) Additional informat
34、ion for functional safety communication profiles of CPF 18 . . 57 Annex B (informative) Information for assessment of the functional safety communication profiles of CPF 18 . 58 Bibliography . 59 Table 1 Object definition 18 Table 2 Safety PDU element definition . . 18 Table 3 Communication errors a
35、nd detection measures . 21 Table 4 SPDO PDU structure 25 Table 5 SHB request PDU structure . 26 Table 6 SHB response PDU structure . 27 Table 7 SHB safety communication layer state encoding . 27 Table 8 SALMT commands . 28 Table 9 System states of SALMT state machine. . 29 Table 10 State transitions
36、 SALMT state machine . . 30 Table 11 System states of RxSPDO state machine . 31 Table 12 State transitions RxSPDO state machine 31 Table 13 Timeouts 32 Table 14 Safety object dictionary structure . . 34 Table 15 Objects of communication section . 35 Table 16 Device type . 36 Table 17 Safety ID 37 Ta
37、ble 18 Safety consumer heartbeat entry . 37 Table 19 Safety consumer heartbeat 38 BS EN 61784-3-18:201161784-3-18 IEC:2011 Table 20 Safety producer heartbeat parameter . 39 Table 21 Safety bus cycle times . 42 Table 22 SPDO timeout tolerance 43 Table 23 Receive SPDO communication parameter 43 Table
38、24 Transmit SPDO communication parameter . 46 Table 25 Mapping format . 49 Table 26 Receive SPDO mapping parameter . 49 Table 27 Transmit SPDO mapping parameter 50 Table 28 Indicator states definiton . 51 Table 29 STATUS indicator states . 51 Figure 1 Relationships of IEC 61784-3 with other standard
39、s (machinery) 7 Figure 2 Relationships of IEC 61784-3 with other standards (process) . . 8 Figure 3 FSCP 18/1 system . . 19 Figure 4 FSCP 18/1 software architecture . 21 Figure 5 SPDO interaction model . 23 Figure 6 SHB interaction model . 23 Figure 7 Safety process data object structure 24 Figure 8
40、 Safety heartbeat request structure . 26 Figure 9 Safety heartbeat response structure . 26 Figure 10 Safety PDU for FSCP 18/1 embedded in a Type 22 CDC data section . 28 Figure 11 SALMT state machine . . 29 Figure 12 RxSPDO state machine . . 31 Figure 13 Heartbeat procedure . 32 Figure 14 Delay meas
41、urement principle 33 Figure 15 Parameter handling . 34 Figure 16 Safety response time components 52 Figure 17 Considered data fields for message size calculation 54 Figure 18 Residual error rate 55 BS EN 61784-3-18:201161784-3-18 IEC:2011 7 0 Introduction 0.1 General The IEC 61158 fieldbus standard
42、together with its companion standards IEC 61784-1 and IEC 61784-2 defines a set of communication protocols that enable distributed control of automation applications. Fieldbus technology is now considered well accepted and well proven. Thus many fieldbus enhancements are emerging, addressing not yet
43、 standardized areas such as real time, safety-related and security-related applications. This standard explains the relevant principles for functional safety communications with reference to IEC 61508 series and specifies several safety communication layers (profiles and corresponding protocols) bas
44、ed on the communication profiles and protocol layers of IEC 61784-1, IEC 61784-2 and the IEC 61158 series. It does not cover electrical safety and intrinsic safety aspects. Figure 1 shows the relationships between this standard and relevant safety and fieldbus standards in a machinery environment. I
45、EC 61000-1-2Methodology EMC otherwise IEC 61326-3-1. bEN ratified. Figure 2 Relationships of IEC 61784-3 with other standards (process) Safety communication layers which are implemented as parts of safety-related systems according to IEC 61508 series provide the necessary confidence in the transport
46、ation of messages (information) between two or more participants on a fieldbus in a safety-related system, or sufficient confidence of safe behaviour in the event of fieldbus errors or failures. Safety communication layers specified in this standard do this in such a way that a fieldbus can be used
47、for applications requiring functional safety up to the Safety Integrity Level (SIL) specified by its corresponding functional safety communication profile. The resulting SIL claim of a system depends on the implementation of the selected functional safety communication profile within this system imp
48、lementation of a functional safety communication profile in a standard device is not sufficient to qualify it as a safety device. IEC 769/11 BS EN 61784-3-18:201161784-3-18 IEC:2011 9 This standard describes: basic principles for implementing the requirements of IEC 61508 series for safety-related d
49、ata communications, including possible transmission faults, remedial measures and considerations affecting data integrity; individual description of functional safety profiles for several communication profile families in IEC 61784-1 and IEC 61784-2; safety layer extensions to the communication service and protocols sections of the IEC 61158 series. 0.2 Patent declaration The International
