1、BSI Standards PublicationElectricity metering data exchangePart 4: Lower layer PLC profile using SMITP B-PSK modulationPD CLC/TS 50568-4:2015National forewordThis Published Document is the UK implementation of CLC/TS 50568-4:2015.The UK participation in its preparation was entrusted to TechnicalComm
2、ittee PEL/13, Electricity Meters.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Instituti
3、on 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 85914 4ICS 35.240.60; 91.140.50Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 31 May 2015. Amendme
4、nts/corrigenda issued since publicationDate Text affectedPUBLISHED DOCUMENTPD CLC/TS 50568-4:2015TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CLC/TS 50568-4 April 2015 ICS 35.240.60; 91.140.50 English Version Electricity metering data exchange - Part 4: Lower layer PLC pro
5、file using SMITP B-PSK modulation This Technical Specification was approved by CENELEC on 2014-11-11. CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly at national level in an appropriate form. It is permissible to ke
6、ep conflicting national standards in force. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, La
7、tvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektr
8、otechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. CLC/TS 50568-4:2015 E PD CLC/TS 50568-4:2015CLC/TS 50568-4:2015 - 2 - CONTENTS Foreword 6 Introdu
9、ction . 7 1 Scope . 8 2 Normative references . 8 3 Terms, definitions, acronyms and notations 8 3.1 Terms and definitions 8 3.2 Acronyms 8 3.3 Notations . 9 4 Overview 9 4.1 Communication characterization on LV network . 9 4.2 Communication architecture 11 4.2.1 Overview . 11 4.2.2 LLC sub-layer 11
10、4.2.3 MAC sub-layer . 11 4.2.4 Physical Layer . 12 4.2.4.1 Introduction . 12 4.2.4.2 Modulation and modes 13 4.2.5 Protocols architecture for LV nodes communication 13 4.3 Requests priority and slave nodes scanning 14 4.4 Communication disciplines 14 4.4.1 Service classes . 14 4.4.2 Timers . 15 4.4.
11、3 Discipline types . 16 4.4.3.1 Disciplines of class S 16 4.4.3.2 Disciplines of class R 17 4.4.3.3 Disciplines of class RC 19 5 LLC sub layer . 20 5.1 Primitives and services 20 5.1.1 DL_Data.request . 20 5.1.1.1 Function 20 5.1.1.2 Structure . 20 5.1.1.3 Use . 21 5.1.2 DL_Data.confirm 21 5.1.2.1 F
12、unction 21 5.1.2.2 Structure . 21 5.1.2.3 Use . 22 5.1.3 DL_DATA.indication 22 5.1.3.1 Function 22 5.1.3.2 Structure . 22 5.1.3.3 Use . 22 5.2 LLC protocol data unit structure . 22 5.2.1 LLC_PDU format . 22 5.2.2 Control field . 23 5.2.3 Address field . 23 PD CLC/TS 50568-4:2015- 3 - CLC/TS 50568-4:
13、2015 5.2.4 Invalid L_PDU . 23 5.3 LLC procedures . 23 5.3.1 Procedure for addressing 23 5.3.2 Information transmission 23 5.3.3 Information Reception . 23 5.3.4 Length of an PDU 23 6 MAC sub layer 24 6.1 Primitives and services 24 6.1.1 Primitives 24 6.1.2 Service classes . 26 6.2 Frame Structure 27
14、 6.2.1 General . 27 6.2.2 Frame length (LT) 28 6.2.3 Address (ADDR) 28 6.2.4 Control (CTL) 28 6.2.5 Repetition Parameters (RP) . 29 6.2.5.1 General . 29 6.2.5.2 RP field in RIP frames . 29 6.2.5.3 RP field in CRP frames . 30 6.2.6 Information (INF) . 30 6.2.7 Frame checking sequence (SVT) . 30 6.2.8
15、 Example of frame types . 30 6.3 Procedures 31 6.3.1 Frame filtering . 31 6.3.2 Phase detection . 32 6.3.3 Repetition 32 6.3.3.1 General . 32 6.3.3.2 Example of repetition procedures 32 6.3.3.3 Repetition control 36 7 Physical Layer 38 7.1 Overview . 38 7.2 P_frame Structure . 38 7.2.1 General . 38
16、7.2.2 Preamble (PRE) 39 7.2.3 Unique word (UW) . 39 7.2.4 Mode . 39 7.2.5 P_payload . 39 7.3 Modulation 39 7.4 Encoder 40 7.4.1 General . 40 7.4.2 Convolutional Encoder . 40 7.4.3 Convolutional Interleaver . 41 7.5 P_Data services 43 7.5.1 General . 43 7.5.2 P_Data.request . 43 7.5.3 P_Data.confirm
17、43 7.5.4 P_Data.indication 43 PD CLC/TS 50568-4:2015CLC/TS 50568-4:2015 - 4 - Annex A (informative) SCA address configuration 44 A.1 Structure of the SCA and ACA addresses 44 Annex B (informative) Disciplines . 46 B.1 Discipline timers configuration . 46 Annex C (informative) Details on message bit
18、coding . 48 C.1 Example of bit coding 48 Annex D (normative) SMITP-BPSK specific definitions . 49 D.1 Management of reserved elements 49 D.2 ECTL (Extended control) structure . 49 List of figures Figure 1 Document structure of prTS 50568-4 7 Figure 2 Communication section in a LV line 10 Figure 3 A
19、sub-net . 10 Figure 4 B sub-net . 11 Figure 5 Data transfer on power line 12 Figure 6 Protocols architecture in the A sub-net 13 Figure 7 Protocols architecture in the B sub-net 13 Figure 8 Messages exchange in the SAx discipline 17 Figure 9 Messages exchange in the RAx discipline 17 Figure 10 Messa
20、ges exchange in the RBx discipline 18 Figure 11 Messages exchange in the RCx discipline without repeaters 19 Figure 12 Messages exchange in the RCx discipline with repeaters . 20 Figure 13 LLC frame structure . 23 Figure 14 Control Field format . 23 Figure 15 Messages exchange in the Sxx service cla
21、ss . 26 Figure 16 Messages exchange in the Rxx service class with (b) or without (a) timeout expiration along the chain, 27 Figure 17 MAC frame structure 27 Figure 18 RP field in MAC frame (ACA addresses) 29 Figure 19 RP field in MAC frame (short form SCA addresses) 30 Figure 20 RIP MAC frame 31 Fig
22、ure 21 NOR1 MAC frame 31 Figure 22 NOR2 MAC frame 31 Figure 23 CRP MAC frame . 31 Figure 24 Example of repetition procedure using ACA address 33 Figure 25 Example of repetition procedure using SCA address 34 Figure 26 Example of CRP repetition control procedure . 37 Figure 27 Data transfer in Physic
23、al Layer . 38 Figure 28 Physical frame (P_frame) structure 39 Figure 29 Convolutional encoding of the P_payload . 40 Figure 30 Convolutional Encoder . 40 PD CLC/TS 50568-4:2015- 5 - CLC/TS 50568-4:2015 Figure 31 Convolutional Interleaver . 41 Figure 32 P_Data services . 43 Figure A.1 SCA address str
24、ucture 44 Figure A.2 ACA address structure 44 Figure C.1 Frames encapsulation example 48 List of tables Table 1 Service classes in communication disciplines 15 Table 2 MA_EVENT.indication parameters . 26 Table 3 CTL field coding in MAC frame 28 Table 4 Example of interleaving . 42 Table 5 Shift regi
25、sters initial condition 43 Table B.1 Subfield dddd and maximum number of received bytes in A and B subnets for disciplines S, RA and RB. . 46 Table B.2 Subfield ddd and number of time slots for RC disciplines. 46 PD CLC/TS 50568-4:2015CLC/TS 50568-4:2015 - 6 - Foreword This document (CLC/TS 50568-4:
26、2015) has been prepared by CLC/TC 13, “Electrical energy measurement and control“. The following date is fixed: latest date by which the existence of this document has to be announced at national level (doa) 2015-07-24 Attention is drawn to the possibility that some of the elements of this document
27、may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association. The European Committee for Electro
28、technical Standardization (CENELEC) draws attention to the fact that it is claimed that compliance with this International Standard may involve the use of a maintenance service concerning the stack of protocols on which the present Technical Specification CLC/TS 50568 is based. The CENELEC takes no
29、position concerning the evidence, validity and scope of this maintenance service. The provider of the maintenance service has assured the CENELEC that he is willing to provide services under reasonable and non-discriminatory terms and conditions for applicants throughout the world. In this respect,
30、the statement of the provider of the maintenance service is registered with the CENELEC. Information may be obtained from: Meters and More Open Technologies Brussels/Belgium www.metersandmore.eu PD CLC/TS 50568-4:2015- 7 - CLC/TS 50568-4:2015 Introduction This Technical Specification is based on the
31、 results of the European OPEN Meter project, Topic Energy 2008.7.1.1, Project no.: 226369, . According to the structure of the CLC/TS 50568 documentation, this document is positioned as highlighted in the following figure: Figure 1 Document structure of CLC/TS 50568-4 PD CLC/TS 50568-4:2015CLC/TS 50
32、568-4:2015 - 8 - 1 Scope This Technical Specification specifies the characteristics of the profile related to Physical and Data Link Layers for communications on LV distribution network between a Concentrator (master node) and one or more slave nodes. The following prescriptions are applied to group
33、s of devices that communicate using low voltage network. Each section of the network is composed by one Concentrator (acting as the master of the section), and one or more primary nodes (A-Nodes). Every A-Node can optionally be associated to one secondary node (B-Node). 2 Normative references The fo
34、llowing documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50065-1, S
35、ignalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz Part 1: General requirements, frequency band and electromagnetic disturbances 3 Terms, definitions, acronyms and notations 3.1 Terms and definitions For the purpose of this document, the following terms and d
36、efinitions apply: 3.1.1 concentrator section identification code of the network managed by the concentrator 3.1.2 node subsection identification code of the sub network within the network identified by concentrator section 3.1.3 node progressive unique node ID within the node sub section 3.1.4 upper
37、 layers every communication stack layer except PHY, MAC and LLC 3.2 Acronyms For the purpose of this document, the following acronyms apply: ACA: Absolute Communication Address B-PSK: Binary Phase Shift Keying CRC: Cyclic Redundancy Check D-L: Data-Link ECC: Encryption Coding Control ECTL: Extended
38、Control HDLC: High-level data link control procedures LLC: Logical Link Control LSb: Least Significant bit LSB: Least Significant Byte LSDU: LLC Service Data Unit LV: Low Voltage PD CLC/TS 50568-4:2015- 9 - CLC/TS 50568-4:2015 MAC: Medium Access Control MAU: Mains Attachment Unit MSb: Most Significa
39、nt bit MSB: Most Significant Byte NDM: Normal disconnect mode, one of the non-operational data link mode of HDLC NM: Network Management Ph: Physical PLS: Physical Signalling PRE: Preamble PSK: Phase Shift Keying SAP: Service Access Point SCA: Section Communication Address UL: Upper Layer UW: Unique
40、Word 3.3 Notations For the purpose of this document, the following notations apply: 1 byte = 8 bits (or octet); byte/field name representation: capital letters; bit name representation: small letters; bits transmission sequence related to their representation: first bit on the left = first transmitt
41、ed bit; bit transmission order related to their weight: least significant bit = first transmitted bit; bytes transmission sequence related to their representation: first byte on the left = first transmitted byte; bytes transmission order related to their weight: least significant byte = first transm
42、itted byte; fields transmission sequence related to their representation: first field on the left = first transmitted field; fields transmission order related to their weight: least significant field= first transmitted field; a frame/message is “upstream” if it is logically sent from centre to perip
43、hery; a frame/message is “downstream” if it is logically sent from periphery to centre. 4 Overview 4.1 Communication characterization on LV network The Physical Layer configuration on LV network is considered as a multi-point connection of nodes operating in half-duplex mode. So, access rules are re
44、quired in order to avoid nodes transmission collisions. Furthermore, it has to be considered that LV network cannot be treated as a normal broadcast medium, because standing-waves phenomena and most of all signal attenuation may make direct communication between couple of nodes impossible. PD CLC/TS
45、 50568-4:2015CLC/TS 50568-4:2015 - 10 - In order to obtain a virtually direct communication, between any couple of nodes, the protocol functionalities shall foresee the repetition technique. Figure 2 shows the reference scheme of a LV line portion, which is identified as communication section. A LV
46、network controlled by a Concentrator is composed by a set of branch-connected sections of this kind: Figure 2 Communication section in a LV line where: information exchanging is required either between Concentrator and any node, or between an A-Node and the associated B-Node; message transferring sh
47、all always happen on the A-Node electric connection phase. In case of polyphase meter, communication shall always happen through one of the three phases, the same one for all communications; each A-Node and B-Node has its own unique address. There are the following two types of sub-nets. Each one is
48、 unbalanced (the initiation of transmission procedure is limited to a master or a sub-net master station), with one or more slave nodes. A sub-net Figure 3 A sub-net Within A sub-net, communications between Concentrator (master station for this sub-net) and any node (slave), with single or group add
49、ressing, are defined. This sub-net can use repetition. PD CLC/TS 50568-4:2015- 11 - CLC/TS 50568-4:2015 B sub-net Figure 4 B sub-net Within B sub-net, communications between A-Node (master station for this sub-net) and the associated B-Node (slave) are defined. This sub-net does not foresee repetition. The profile of protocols to be used has to reach the following objectives: to satisfy application requirements in terms of effic
