1、BSI Standards Publication Electricity metering data exchange Part 4: Lower layer PLC profile using SMITP B-PSK modulation PD CLC/TS 50568-4:2015National foreword This Published Document is the UK implementation of CLC/TS 50568-4:2015. The UK participation in its preparation was entrusted to Technica
2、l Committee PEL/13, Electricity Meters. 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. The British Standards
3、 Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 85914 4 ICS 35.240.60; 91.140.50 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31
4、May 2015. Amendments/corrigenda issued since publication Date Text affected PUBLISHED DOCUMENT PD CLC/TS 50568-4:2015 TECHNICAL 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
5、: Lower layer PLC profile 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
6、 is permissible to keep 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, Icelan
7、d, Ireland, Italy, Latvia, 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 Europisc
8、hes Komitee fr Elektrotechnische 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 - CONTEN
9、TS Foreword 6 Introduction . 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.
10、2.2 LLC sub-layer 11 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
11、.4.2 Timers . 15 4.4.3 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
12、.confirm 21 5.1.2.1 Function 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
13、 - 3 - CLC/TS 50568-4:2015 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
14、6.2 Frame Structure 27 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 seq
15、uence (SVT) . 30 6.2.8 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 .
16、38 7.2.1 General . 38 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
17、 7.5.3 P_Data.confirm 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) D
18、etails on message bit 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
19、LV line 10 Figure 3 A 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 discipl
20、ine 17 Figure 10 Messages 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
21、in the Sxx service class . 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 2
22、0 RIP MAC frame 31 Figure 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 D
23、ata transfer in Physical 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 Fig
24、ure A.1 SCA address structure 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
25、. 42 Table 5 Shift registers 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 do
26、cument (CLC/TS 50568-4:2015) 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 ele
27、ments of this document 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 Europea
28、n Committee for Electrotechnical 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
29、. The CENELEC takes no 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 w
30、orld. In this respect, 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 Speci
31、fication is based on the 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/
32、TS 50568-4:2015CLC/TS 50568-4:2015 - 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 prescripti
33、ons are applied to groups 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 Nor
34、mative references The following 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
35、) applies. EN 50065-1, Signalling 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, t
36、he following terms and definitions 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
37、 sub section 3.1.4 upper 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
38、 Control ECTL: Extended 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
39、 Unit MSb: Most Significant 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
40、: Upper Layer UW: Unique 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 t
41、he left = first transmitted 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 signif
42、icant byte = first transmitted 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
43、sent from centre to periphery; 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
44、. So, access rules are required 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 no
45、des impossible. PD CLC/TS 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 com
46、munication section. A LV 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-Nod
47、e; message transferring shall 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 type
48、s of sub-nets. Each one is 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)
49、, with single or group addressing, 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 requirem
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