BS EN 1434-3-2008

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BS EN 1434-3-2008 Heat Meters — Part 3 Data exchange and interfaces
BSEN14343:2008 EUROPEAN STANDARD EN14343 NORME EUROPEENNE EUROPAISCHE NORM October 2008 cS17.200.10 Supersedes en 1434-3: 1997 English version Heat Meters- Part 3: Data exchange and interfaces Compteurs d'energie thermique -Partie 3: Echange de Warmezahler- Teil 3: Datenaustausch und schnittstellen donnees et interfaces This European Standard was approved by cen on 16 August 2008 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 on application to the CEN 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 Management Centre has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France: Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG Management Centre: rue de stassart, 36 B-1050 Brussels c 2008 CEn All rights of exploitation in any form and by any means reserved Ref.No.EN14343:2008:E worldwide for cen national members BSEN14343:2008 EN14343:2008(E) Contents Page Foreword sc。pe,, 面正a日量 1234 Normative references…… Meter interfaces and protocols overview..... Physical layer…… 4.1 Genera|.… 556666 4.2 Physical layer optical interface.,….,.,.,…,…,…,,… 4.3 Physical layer M-BUs………… 44 Physical layer wireless interface,,,,…,…,…,…,…,…,, 4.5 Physical layer current loop interface 4.6 Physical layer Local Bus 5 Link layer…,,,,…,…,…, 5.1.1 Link layer optical interface with the En 13757-2 protocol.... 量自1国正量日量 512 Link layer optical interface with the EN62056-21 protocol.…,…,…,…, 51.3 Link layer optical interface with automatic protocol recognition…,,…,…,…,…,…,……,7 52 Link layer of M- Bus and local bus 5.3 Link layer wireless interface…,,,,,,…,,,… ■■ 5.4 Link layer current-loop interface.. 8 Application layer,…,…,…,… 6.1 Application layer optical interface 8 6.1.1 Protocol modes according to en 13757-3 for heat meters 612 Protocol modes according to EN62056-21 for heat meters,,,,…,…,…,…, 6.2 Application layer M-Bus and Local Bus 6.2.1 General 6.2.2 Coding of data records Application,,,,…,…,… General 72 Physical layer…,,…,…,…, 7,3 Link layer BBBEEIIB.BB 7. 4 Application layer.e. 7.5c。 ntrol applications,,,,… 9 Annex A (informative)Recommendation for heat meter test interface Annex B( informative) Additional information for heat meters……,……,,…,,…,……………12 B.1 Additional information regarding the EN 62056-21 protocol B.2 Data set∴ 12 B3 Coding of the data set identification number B.3.1 Schematic structure 13 B32 Values for“T" group code…, B.3.3 Values forUU", register codes e.m..mseen 日面 13 B.34 Values for"W", number of the tariff-.…… B.3.5 Use of */&and" for prestored values 16 B.3.6 Coding of the unit in the data set B.3.7 Coding of the value in the data set…… B.3. 8 Coding of the measured value B.3. 9 Coding of the error message.... 18 B3.10 Coding of the date andlor time stamp B 3.11 Presentation of related values 19 Annex C(informative) Automatic protocol detection and wake-up for the optical interface BSEN14343:2008 EN1434-3:2008(E Annex D( informative) Usage of heat meters in control applications.…,……,……,…,……………22 Heat meter D.1.1 General D.1.2 Application layer: data records…… 2222 D.1.3 Application: actuality of the data.. ■■ 国D重 D.1.4 Application layer: acceptable data types(DIFs) 23 D.15 Application layer: acceptable units(VFs)………… D.2 Controller D.2.1 Start until first answer 国面国面面面面面BB D.2.2 Start until first successful readout 24 Annex E(informative) Protection techniques for M-Bus meters against surge/lightning 25 Annex F(informative) Additional information about the master-unit for the M-Bus 30 F 1 Master side interface to the m-bus F2 Master side interface for local data read out 30 F3 Full size level converter 31 Bibliography. 33 BSEN14343:2008 EN14343:2008(E) Foreword This document(EN 1434-3: 2008) has been prepared by technical Committee CEN/TC 294 Communication systems for meters and remote reading of meters", the secretariat of which is held by dS 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 April 2009, and conflicting national standards shall be withdrawn at the latest by April 2009 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent ights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights This document supersedes En 1434-3: 1997 EN 1434 consists of the following parts, under the general title"Heat meters Part 1 Genera/ requirements Part 2: Constructional requirements - Part 4: Pattern approval tests - Part 5: nitia/ verification tests Part 6: Installation, commissioning, operational monitoring and maintenance According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain Sweden, Switzerland and the United Kingdom BSEN14343:2008 EN1434-3:2008(E Scope This European Standard applies to heat meters, that is to instruments intended for measuring the heat which in a heat-exchange circuit, is absorbed or given up by a liquid called the energy-conveying liquid. The meter indicates heat in legal units Electrical safety requirements are not covered by this standard Part 3 specifies the data exchange between a meter and a readout device(PoinT / PoINT communication For these applications using the optical readout head, the en 62056-21 protocol is recommended For direct or remote local readout of a single or a few meters via a battery driven readout device, the physical layer of EN 13757-6(local bus)is recommended For bigger networks with up to 250 meters, a master unit with Ac mains supply according to EN 13757-2 is necessary to control the M-Bus. For these applications the physical and link layer of En 13757-2 and the application layer of en 13757-3 is required For wireless meter communications en 13757-4 describes several alternatives of walk/drive-by readout via a mobile station or by using stationary receivers or a network. Both unidirectionally and bidirectionally transmitting meters are supported by this standard 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document(including any amendments )applies EN 13757-1, Communication system for meters and remote reading of meters- Part 1: Data exchange EN 13757-2: 2004, Communication systems for and remote reading of meters- Part 2: Physical and link ayer EN 13757-3: 2004, Communication systems for and remote reading of meters-- Part 3: Dedicated application layer EN 13757-4: 2005, Communication systems for meters and remote reading of meters- Part 4: Wireless meter readout (Radio meter reading for operation in the 868 MHz to 870 MHZ SRD band) EN 13757-5, Communication systems for meters and remote reading of meters- Part 5: Wireless relaying EN 13757-6, Communication systems for meters and remote reading of meters- Part 6: Local Bus En 62056-21: 2002, Electricity metering- Data exchange for meter reading tariff and load control- Part 21 Direct local data exchange(EC 62056-21: 2002) BSEN14343:2008 EN14343:2008(E) 3 Meter interfaces and protocols overview Table 1-possible combinations of interfaces and standards Hardware interface type Recommended Alternative standards standard Optical EN13757-2 EN62056-21:2002. EN62056-21:2002,3.2 Subclause 4.1 M-Bus EN13757-2 No alternative Wireless Modes sort of en 13757- Mode r2 of en 13757-4: 2005 4:2005 Relaying EN 13757-5 Current loop EN62056-21:2002.3.1 No alternative Local bus EN137576 No alternative Application layer EN13757-3 EN13757-1 (All interfaces) 4 Physical layer 4.1 General a meter can have either none or a number of interfaces to communicate with the outside world if a meter has an interface in accordance with this standard, it shall fulfil at least one of the following requirements for the physical layer. 4.2 Physical layer optical interface The optical interface is used for local data readout. a hand held unit, equipped with an optical readout head, is temporarily connected to one heat meter and the data is read out, one heat meter at a time. The physical properties of the optical interface are defined in EN 62056-21 4.3 Physical layer M-Bus The physical layer of the M-Bus is described in En 13757-2. It can be used for "point to point"or for nulti-point"communication in bus systems. If a heat meter presents more than one unit load to the bus, the num ber of unit loads has to be shown on the meter documentation as UL where x is the number of uni loads. Only integer values are allowed Especially in extended installation, meters with an M-Bus interface might need additional protection against surge and lightning. Annex E shows various techniques for either constructing meters with an M-bus interface and integrated enhanced protection elements. In addition it shows how to construct external protection elements for meters with a standard(unprotected) M-Bus interface. Two ariants are given: one(preferred) for situation where a ground connection is available and a variant with weaker protection if no ground connection is available. An enhanced version of the protection additionally protects the meter and its interface from destruction if mains power is connected to the M-Bus terminals of the meter. If the readout frequency of the meter is limited either by software or by the battery capacity, the meter documentation shall signal the readout frequency as "x per day,"y per h"or"z per min "where x, y or z are the number of readouts within the corresponding period allowed by the software without impairing the battery ifetime Heat meters with unlimited readout frequency do not need such information BSEN14343:2008 EN1434-3:2008(E 4. 4 Physical layer wireless interface The modes T or S of En 13757-4: 2005 are recommended. they describe uni-or bidirectional communication in the 868 MHZ bands optimized for mobile(T-modes) or stationary(S-modes)meter communication. The ode R2 of EN 13757-4: 2005 and the optional relaying for this mode according to en 13757-5 may also be used 4.5 Physical layer current loop interface T ype of signal: 20 mA (CL interface in accordance with EN 62056-21: 2002, 4.1 with galvanic separation) Power supply: on the heat meter side, the interface shall be passive. The readout device supplies the necessarv power Connections: via terminals or suitable connectors 4.6 Physical layer Local Bus The Local Bus is an alternative to the M-Bus. It is restricted to small installations inibus installation according to EN 13757-2: 2002, Annex E.6. 1 type E)and optimized for special battery-driven masters. It does not support meter power supply from the bus. note that this interface is not compatible with M-Bus masters according to EN 13757-2. Its physical layer is described in EN 13757-6 5 Link layer 5.1 Link layer optical interface 5.1.1 Link layer optical interface with the en 13757-2 protocol If the optical interface is used with the EN 13757-2 protocol, a wake-up message can be sent after every idle time of 330 bit times to the heat meter. the wake up message consists of zeroes and ones alternating at the desired baud rate for a duration of (2, 2+0, 1)s. After an idle time of 33 bit times to 330 bit times the communi cation can start 5.1.2 Link layer optical interface with the En 62056-21 protocol According to EN 62056-21 5.1.3 Link layer optical interface with automatic protocol recognition If the user or the handheld unit does not know which of the two alternative protocols a meter uses, it is suggested to use a combined wake-up and recognition sequence as described in the Informative Annex C 5.2 Link layer of M-Bus and Local Bus The link layer of the M-Bus and the Local Bus is described in EN 13757-2. All required functions shall be implemented in a heat meter with an M-Bus or Local Bus connector. If the readout frequency of the meter is limited either by software or by the battery capacity, the meter documentation shall signal the readout frequency as"x per day,y per h or"z per min"where x, y or z are the number of readouts within the corresponding period allowed by the software without impairing the battery lifetime. Heat meters with unlimited readout frequency do not need such information 5.3 Link layer wireless interface According to EN 13757-4 BSEN14343:2008 EN14343:2008(E) 5. 4 Link layer current-loop interface According to en 62056-21: 2002, Clause 4 to 5 6 Application layer 6.1 Application layer optical interface 6.1.1 Protocol modes according to en 13757-3 for heat meters Further details are given in the section on the application layer of the M-Bus 6.1.2 Protocol modes according to en 62056-21 for heat meters 6.1.2.1 General This protocol may be used for the optical interface The basic rules of the protocol are defined in En 62056-21. Annex B of that document deals with battery operated devices (i.e. some heat meters) The manufacturer ID(identification) mentioned in En 62056-21( three upper case letters)is used for heat meters using this protocol in the same manner. For heat meter manufacturers using the data transmission protocol of En 13757-3. the en 62056-21 d is also used to calculate the id num ber described in clause 6 of this standard The formula stated in 6.6. 1 shall be used (see also Annex B) EN 62056-21 describes various modes of operation. All main modes"A"," B, C and"D"are allowed for heat meters 6.1.2.2 Restrictions for heat meters The en 62056-21 protocol shall be used with some restrictions. In some cases, En 62056-21 offers more than one possibility to perform the communication For communication with heat meters only the selection described in the following subclauses shall be used. The selection is consistent with EN 62056-2 6.1.2.3 Calculation of block check character The calculation of the block check character shall always be used for the data message sent from the heat meter to the readout device 6.1.2.4 Syntax diagram The syntax described in en 62056-21: 2002, 5.5 shall be used for heat meters as follows: the wake-up message can be sent from the hand held unit to the heat meter to activate the com- unication facilities in the heat meter - the data message for heat meters shall start with the stX character and end with the EtX and BCC sequence, the data block consists of one or more data lines each data line may contain up to 78 characters and ends with a CR and LF

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