1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Communication systems for metersPart 2: Wired M-Bus communicationBS EN 13757-2:2018National forewordThis British Standard is the UK implementation of EN 13757-2:2018. It supersedes BS EN 13757-2:2004, which is withdrawn
2、.The UK participation in its preparation was entrusted to Technical Committee PEL/894, Remote Meter Reading.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
3、 are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 93563 3ICS 35.100.10; 33.200; 91.140.50; 35.240.99Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was publ
4、ished under the authority of the Standards Policy and Strategy Committee on 30 April 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 13757-2:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 137572April 2018ICS 33.200; 35.100.10; 35.240.99; 91.140.50 Su
5、persedes EN 13757-2:2004EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCENCENELEC Management Centre: Avenue Marnix 17, B1000 Brussels 2018 CEN Ref. No. EN 13757-2:2018: EAll rights of exploitation in any form and by any means reserved worldwide for
6、CEN national MembersCommunication systems for meters - Part 2: Wired M-Bus communicationSystmes de communication pour compteurs - Partie 2 : Communication M-Bus filaireKommunikationssysteme fr Zhler - Teil 2: Drahtgebundene M-Bus-KommunikationThis European Standard was approved by CEN on 8 February
7、2018.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained
8、 on application to the CEN-CENELEC Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CEN
9、ELEC Management Centre has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Ital
10、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN 137572:2018 (E)European foreword 4Introduction . 51 Scope . 62 Normative references 63 Terms and definitions .
11、64 Physical layer specifications. 64.1 General . 64.2 Electrical requirements slave . 74.2.1 Master to slave bus voltages 74.2.2 Slave bus current and multiple unit loads . 84.2.3 Dynamic requirements . 94.3 Electrical requirements master 94.3.1 Parameters 94.3.2 Function types .104.3.3 Requirements
12、 104.4 Electrical requirements mini-master . 124.4.1 Definition of a mini-master 124.4.2 Requirements 124.5 Repeaters 124.5.1 General requirements .124.5.2 Additional requirements 124.6 Burst and surge requirements 134.6.1 General. 134.6.2 Requirements for devices intended for domestic use 134.6.3 R
13、equirements for devices intended for industrial use .135 Link Layer (master and slave) .135.1 General 135.2 Baud rate . 135.2.1 Required baud rate .135.2.2 Recommended additional baud rates .135.2.3 Special baud rates 135.2.4 Baud rate after reset 135.2.5 Baud rate set .135.2.6 Auto speed mode 145.2
14、.7 Transmit baud rate accuracy 145.3 Bit position 145.3.1 Synchronous transmit bit distortion .145.3.2 Gross transmit bit distortion and minimum signal element .145.3.3 Character interval requirement . 145.3.4 Practical receive margin and character interval requirement.145.3.5 Minimum signal element
15、 . 145.4 Byte format 145.5 Block format . 155.5.1 Transmission interbyte gaps 155.5.2 Reception interbyte gaps . 155.5.3 Idle time between datagrams 155.6 Datagram abort on collision . 155.7 Datagram description 155.7.1 General. 155.7.2 Data integrity .155.7.3 Datagram structure 155.7.4 Datagram cod
16、ing .162Contents PageBS EN 13757-2:2018EN 137572:2018 (E)5.7.5 Addressing 165.7.6 Link layer time schedule 175.7.7 Datagram sequencing .176 Tables and figures 17Annex A (informative) Schematic implementation of slave 22Annex B (informative) Protection against mains voltages23Annex C (informative) Sl
17、ave powering options.24Annex D (informative) Slave collision detect 25Annex E (informative) Wire installation 26Annex F (informative) Protocol examples 28Bibliography .29 ISO ISO pub-date year All rights reserved 3BS EN 13757-2:2018EN 137572:2018 (E)European forewordThis document (EN 13757-2:2018) h
18、as been prepared by Technical Committee CEN/TC 294 “Communication systems for meters”, the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2018, and con
19、flicting national standards shall be withdrawn at the latest by October 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This document supersedes
20、EN 13757-2:2004.This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association.The following significant technical changes have been incorporated in the new edition of this European Standard:a) more precise definition of collision stat
21、e under 4.3.3.8;b) modification of application under 5.7.3.4 from “required” to “optional”;c) additional explanations for usage of REQ-SKE under 5.7.3.4;d) addition of new datagram SND-UD2 under 5.7.3.5;e) alignment of Annex D with revised definition of collision state under 4.3.3.8 andf) editorial
22、alignments with other parts of this standard, e.g. replacement of $E5 with ACK.EN 13757 is currently composed with the following parts: Communication systems for meters Part 1: Data exchange; Communication systems for meters Part 2: Wired M-Bus communication; Communication systems for meters Part 3:
23、 Application protocols; Communication systems for meters and remote reading of meters Part 4: Wireless meter readout (Radio meter reading for operation in SRD bands); Communication systems for meters Part 5: Wireless M-Bus relaying; Communication systems for meters Part 6: Local Bus; Communication s
24、ystems for meters Part 7: Transport and security services; CEN/TR 17167, Communication systems for meters Accompanying TR to EN 13757-2,-3 and -7, Examples and supplementary information.According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries
25、 are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
26、 Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.4BS EN 13757-2:2018EN 137572:2018 (E)IntroductionThis European Standard belongs to the EN 13757 series, which covers communication systems for meters. EN 13757-1 contains generic descriptions an
27、d a communication protocol. EN 13757-3 contains detailed description of the application protocols especially the M-Bus Protocol. EN 13757-4 describes wireless communication (often called wireless M-Bus or wM-Bus). EN 13757-5 describes the wireless network used for repeating, relaying and routing for
28、 the different modes of EN 13757-4. EN 13757-6 describes a twisted pair local bus for short distance (Lo-Bus). EN 13757-7 describes transport mechanism and security methods for data. The Technical Report CEN/TR 17167 contains informative annexes from EN 13757-2, EN 13757-3 and EN 13757-7.An overview
29、 of communication systems for meters is given in EN 13757-1, which also contains further definitions.The Physical and Link Layer parameters for baseband communication over twisted pairs have first been specified in EN 1434-3:1997 (“M-Bus”) for heat meters. This standard is a compatible and interwork
30、ing update of a part of EN 1434-3:2015 and includes also other measured media (e.g. water, gas, thermal energy, heat cost allocators), the master side of the communication and newer technical developments. It should be noted that EN 1434-3: 2015 covers also other communication techniques.It can be u
31、sed with various application layers especially the application layer of EN 13757-3.5BS EN 13757-2:2018EN 137572:2018 (E)1 ScopeThis European Standard is applicable to the physical and link layer parameters of baseband communication over twisted pair (M Bus) for meter communication systems. It is esp
32、ecially applicable to thermal energy meters, heat cost allocators, water meters and gas meters.NOTE It is usable also for other meters (like electricity meters) and for sensors and actuators. For generic descriptions concerning communication systems for meters and remote reading of meters see EN 137
33、57-1.2 Normative referencesThe 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 a
34、mendments) applies.EN 13757-1:2014, Communication systems for meters Part 1: Data exchangeEN 60870-5, (all parts), Telecontrol equipment and systems (IEC 60870-5 series)EN 60870-5-1, Telecontrol equipment and systems Part 5: Transmission protocols Section 1: Transmission frame formatsEN 60870-5-2:19
35、93, Telecontrol equipment and systems Part 5: Transmission protocols Section 2: Link transmission proceduresEN 61000-4-4, Electromagnetic compatibility (EMC) Part 4-4: Testing and measurement techniques Electrical fast transient/burst immunity testEN 61000-4-5, Electromagnetic compatibility (EMC) Pa
36、rt 4-5: Testing and measurement techniques Surge immunity test3 Terms and definitionsFor the purposes of this document, the terms and definitions given in EN 13757-1:2014 and the following apply.3.1unit loadone unit load (1 UL) is the maximum mark state current of 1,5 mA4 Physical layer specificatio
37、ns4.1 GeneralFigure 1 shows the principal electrical concept of the physical layer: Information from the master to the slaves is transmitted via voltage level changes. A mark state voltage UMark(idle state, typically 36 V) and an space state voltage which is typically 12 V below UMark(but at least 1
38、2 V) is used for the data transmission. The high voltage step improves the noise immunity in the master to slave direction. The required minimum voltage supports a stable remote powering of all slaves of a segment. Signalling via a voltage change rather than by absolute voltage levels supports even
39、large voltage drops due to wiring resistance of the cable installation. All slaves are constant current sinks. Their mark state current of typically 1,0 mA to 1,5 mA can be used for powering the transceiver IC in the slave and optionally also the slave (meter). The active (space state) current trans
40、mit of a slave is signalled by an increase of this constant current by (11 to20) mA. Signalling via constant current improves the immunity against induced voltages and is independent on wiring resistance. On the input of each slave transceiver a rectifier bridge makes each slave independent of the w
41、iring polarity and reduces installation errors. Protective resistors in front of each slave transceiver simplify the implementation of overvoltage protection and safeguards, the bus against a semiconductor short circuit in a slave by 6 BS EN 13757-2:2018EN 137572:2018 (E)limiting the current of such
42、 a defective slave to 100 mA. Annex A shows the principal function of a slave transceiver. Integrated slave transceivers which include a regulated buffered voltage output for slave (meter) powering, support of battery supply with supply switchover and power down signalling are commercially available
43、.Key1 Bus Voltage at Repeater, Master transmits to Slave2 Current composition of a Slave, Slave transmits to Mastert timeFigure 1 Representation of bits on the MBusAll specification requirements shall be held over the full range of temperature and operating voltage for the responsible system compone
44、nt.4.2 Electrical requirements slave4.2.1 Master to slave bus voltagesMaximum permanent voltage: - 50 V to 0 V to + 50 V (no damage).Voltage range for meeting all specifications: (12 V to 42 V).The Bus voltage at the slave terminals in mark-(quiescent) state of master slave communication (= UMark) s
45、hall be (21 V to 42 V).The mark voltage shall be stored by a voltage maximum detector with an asymmetric time constant. The discharge time constant shall be greater than 30 (charge constant) but less than 1 s.The stored voltage maximum UMarkmay drop in 50 ms by not more than 0,2 V for all voltages b
46、etween 12 V and UMark.a) Bus voltage Mark/Space state for master slave communication:1) Space: UBus1) and the device description shall contain a note on the multiple unit loads for this device.4.2.2.2 Mark state current of a slave deviceThe mark state current IMarkshall be N unit loads.4.2.2.3 Varia
47、tion of the mark state current over bus voltageFor bus voltages in the range of (12 V to 42 V) a voltage variation of 1 V to 15 V shall not change the bus current by more than N 3 A/V.4.2.2.4 Shortterm variation of the mark state currentAt constant bus voltage the bus current shall not change by mor
48、e than 1 % within 10 s.4.2.2.5 Total variation over allowed temperature and voltage range of slave deviceThe total variation of the mark state current of a slave device shall not vary by more than 10 % over the full voltage and temperature range of the slave device.4.2.2.6 Maximum bus current for an
49、y single semiconductor or capacitor defect1 min after any single semiconductor or capacitor defect the maximum current of any slave device shall be less than 100 mA for any bus voltage 42 V.4.2.2.7 Slow startFor any bus voltage in the range of (0 to 42) V the bus current shall be limited to N UL.4.2.2.8 Fast changeAfter any bus voltage change the bus current shall be N ULwithin 1 ms.4.2.2.9 Space state currentThe bus current for a slave space state send shall be higher by (11 to 20) mA than in t
