1、BS EN1434-3:2008ICS 17.200.10,NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDHeat MetersPart 3: Data exchange and interfacesCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permit
2、ted without license from IHS-,-,-This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 28 February2009 BSI 2009ISBN 978 0 580 63495 6Amendments/corrigenda issued since publicationDate CommentsBS EN 1434-3:2008National forewordThis British Standard is t
3、he UK implementation of EN 1434-3:2008. Itsupersedes BS EN 1434-3:1997 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PEL/894, Remote meter reading.A list of organizations represented on this committee can be obtained onrequest to its secretary.This pu
4、blication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.Copyright European Committee for Standardization Provided by IHS under license with CENNo
5、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1434-3:2008EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1434-3October 2008ICS 17.200.10 Supersedes EN 1434-3:1997 English VersionHeat Meters - Part 3: Data exchange and interfacesCompteurs dnergie thermique -
6、 Partie 3 : Echange dedonnes et interfacesWrmezhler - Teil 3: Datenaustausch und SchnittstellenThis 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 EuropeanStandard the st
7、atus of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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
8、 version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic,
9、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 STANDARDIZATIONCOMIT EUROPEN DE NORMALISA
10、TIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1434-3:2008: ECopyright European Committee for Standardization Provided by IHS under licens
11、e with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1434-3:2008EN 1434-3:2008 (E) 2 Contents Page Foreword4 1 Scope 5 2 Normative references 5 3 Meter interfaces and protocols overview6 4 Physical layer.6 4.1 General6 4.2 Physical layer optical interfac
12、e 6 4.3 Physical layer M-Bus.6 4.4 Physical layer wireless interface7 4.5 Physical layer current loop interface.7 4.6 Physical layer Local Bus.7 5 Link layer 7 5.1.1 Link layer optical interface with the EN 13757-2 protocol.7 5.1.2 Link layer optical interface with the EN 62056-21 protocol.7 5.1.3 L
13、ink layer optical interface with automatic protocol recognition.7 5.2 Link layer of M-Bus and Local Bus7 5.3 Link layer wireless interface.7 5.4 Link layer current-loop interface8 6 Application layer8 6.1 Application layer optical interface .8 6.1.1 Protocol modes according to EN 13757-3 for heat me
14、ters .8 6.1.2 Protocol modes according to EN 62056-21 for heat meters .8 6.2 Application layer M-Bus and Local Bus 9 6.2.1 General9 6.2.2 Coding of data records .9 7 Application .9 7.1 General9 7.2 Physical layer.9 7.3 Link layer 9 7.4 Application layer9 7.5 Control applications .9 Annex A (informat
15、ive) Recommendation for heat meter test interface .11 Annex B (informative) Additional information for heat meters 12 B.1 Additional information regarding the EN 62056-21 protocol.12 B.2 Data set .12 B.3 Coding of the data set identification number .13 B.3.1 Schematic structure 13 B.3.2 Values for “
16、T” group code 13 B.3.3 Values for “UU“, register codes .13 B.3.4 Values for “W“, number of the tariff.16 B.3.5 Use of “*/ 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 c
17、ontain up to 78 characters and ends with a CR and LF. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1434-3:2008EN 1434-3:2008 (E) 9 6.1.2.5 Data presentation for heat met
18、er EN 62056-21 does not describe the data presentation of the data message. For users of heat meters from different suppliers, the data coding for data readout application is defined. This data coding shall be used for all modes (A, B, C and D) of the EN 62056-21 protocol. In mode C, it is only used
19、 for submode a) “Data readout“. The data coding for the other submodes b) “Programming mode“ and c) “Supplier specific operation“ are a matter of special agreement between supplier and user. The normative Annex B describes the data set and the coding for the readout application of heat meters using
20、this alternative protocol. 6.2 Application layer M-Bus and Local Bus 6.2.1 General This protocol of EN 13757-3 is recommended for the M-Bus and the Local Bus interface. It can be used for the optical interface alternatively and in this case, the heat meter shall be marked with a label “M-Bus” identi
21、fying the protocol. Alternatively the application layer of EN 13757-1 may also be used. 6.2.2 Coding of data records Of EN 13757-3 only the variable data structure with low byte first multibyte-elements (CI = 72 h) shall be used. 7 Application 7.1 General The application layer (Clause 6) describes h
22、ow to code telegrams and data elements. The quoted standards contain many different options for different applications. This clause describes which minimum function of the quoted standards shall be implemented in a heat meter according to this standard. 7.2 Physical layer As a minimum, two baud rate
23、s of 300 baud and 2 400 baud shall be implemented. If the heat meter does not support automatic baud rate detection, the commands for baud rate switching and fallback shall be implemented. 7.3 Link layer A heat meter shall support both the primary and the secondary addressing via the link layer. The
24、 application shall support the assignment of primary addresses via the M-Bus. All application layer command for managing the secondary addressing mode (including the functions of extended secondary addressing) shall be supported. All application layer commands for managing the secondary address shal
25、l be supported. When the user is able to change the secondary address of the meter, the commands for the extended secondary addressing mode shall be supported as well. 7.4 Application layer All readout telegrams shall contain at least the standard header with the meter-ID. The minimum variable data
26、element list shall contain the actual accumulated energy. The default unit shall be the unit on the meter display. The minimum resolution of the accumulated energy shall be the same as on the meter display. The minimum value actuality shall be 15 min. The minimum readout frequency is the readout of
27、up to 250 meters in a segment once per day. 7.5 Control applications Meter suitable for control applications shall fulfil, in addition to the minimum requirements of 7.4, the requirements of Annex D. The suitability of a heat meter with M-Bus interface for such applications may only Copyright Europe
28、an Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1434-3:2008EN 1434-3:2008 (E) 10 be declared (“Suitable for control applications“ according to prEN 1434-3:2007, Annex D) in the meter descr
29、iption if all these requirements are met. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1434-3:2008EN 1434-3:2008 (E) 11 Annex A (informative) Recommendation for heat met
30、er test interface Modern heat meters are mainly equipped with CMOS microprocessors with a very low power consumption, allowing battery operation. Testing and adjusting of this type of meters needs a completely different approach. Until now, almost every meter type needed its own test equipment to ha
31、ndle the manufacturers specific requirements. This is a very complicated and expensive way for users of several types of meters and for initial verification institutes. The more different types of heat meters a user has installed, the more testing equipment he may need. An economical testing of seve
32、ral meters should be possible and an easy adaptation to the existing test bench is of great interest. Since this problem came up, experts have been researching an acceptable solution to it. Details of one example of an acceptable solution are given in AGFW FW 203, “Normierter Wrmezhler-Adapter“ 1. C
33、opyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1434-3:2008EN 1434-3:2008 (E) 12 Annex B (informative) Additional information for heat meters B.1 Additional information rega
34、rding the EN 62056-21 protocol List of “T“ group codes. Overview on values in use: “0“ = identification (only in connection with value type 0); “1“ = reserved for electrical energy active; “2“ = reserved for electrical energy reactive; “3“ = reserved for electrical energy reserve; “4“ = not used; “5
35、“ = reserved for energy; “6“ = heat meters; “7“ = gas meters; “8“ = water meters; “9“ = reserved for specific identification number or status information; “F“ = error identification for meters. NOTE This list is taken from “VE Pflichtenheft fr Tarifgerte“ 2. B.2 Data set Figure B.1 Signal direction
36、As recommended in EN 62056-21:2002, 5.7 each data set (shown diagrammatically above) consists of: Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1434-3:2008EN 1434-3:2008
37、(E) 13 an identification number with the schematic structure; “T“ . “UU“ . “W“ * “VV“ or “T“ . “UU“ . “W“ “(“ as a front boundary character for the value and unit information; “Value“: 32 printable characters maximum with the exception of “(“, “)“, “*“, “/“ and “!“; decimal points (not commas) shall
38、 be included where applicable; “*“ as a separator character between value and unit; this separator is not required if there are no units; “Units“: 16 printable characters maximum, with the exception of “(“, “)“, “/“ and “!“; “)“ as a rear boundary character for the value and unit information. B.3 Co
39、ding of the data set identification number B.3.1 Schematic structure Key 1 Group code, 1 digit 2 Separator, decimal point 3 Type of register, 1 or 2 digits 4 Separator, decimal point 5 Number of the tariff, 1 digit e.g. 1 = tariff 1; 2 = tariff 2 .9 = tariff 9 6 Separator, 1 character only to be use
40、d if the following value is a stored value: * Separator: if reset is triggered automatically (e.g. RCR, RTC) “ “VV“ is the number of the prestored value; a heat meter can have up to 99 prestored values. Copyright European Committee for Standardization Provided by IHS under license with CENNot for Re
41、saleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1434-3:2008EN 1434-3:2008 (E) 17 If the heat meter has no prestorage facilities, the whole sequence shall be omitted. B.3.6 Coding of the unit in the data set If the transmitted value has a unit, it is separated by a “*“
42、and shall be coded as follows: Energy: Temperature: “J“ Joule “C“ Degree Celsius “kJ“ Kilojoule “MJ“ Megajoule Power: “GJ“ Gigajoule “Wh“ Watt hours - “W“ Watt “kWh“ Kilowatt hour - “kW“ Kilowatt “MWh“ Megawatt hour - “MW“ Megawatt “GWh“ Gigawatt hour - “GW“ Gigawatt Volume: Time and/or Date: “ml“ M
43、illilitre - “s“ Second “l“ Litre - “m“ Minute “m3“ Cubic metre - “h“ Hour Time and/or Date: “D“ Day “M“ Month “Y“ Year Flow: Mass flow: “lps“ Litre per second / “kgps“ Kilogram per second “lpm“ Litre per minute / “kgpm“ Kilogram per minute “lph“ Litre per hour / “kgph“ Kilogram per hour “m3ph“ Cubic
44、 metre per hour B.3.7 Coding of the value in the data set The value represents the measured or calculated value. It can contain manufacturer specific status information, an error message or a date and/or time stamp. Copyright European Committee for Standardization Provided by IHS under license with
45、CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1434-3:2008EN 1434-3:2008 (E) 18 B.3.8 Coding of the measured value The measured value is represented by 1 to 32 numeric characters. For heat meters, the maximum number of characters depends on the register c
46、ode. B.3.9 Coding of the error message The following numbers represent the indicated errors: “0“ no error; “1“ only external error; “2“ external and internal error simultaneously; “3“ only internal error; “4“ reserved for later use; “5“ flow error; “6“ flow temperature probe interrupted; “7“ flow te
47、mperature probe short circuit; “8“ return temperature probe interrupted; “9“ return temperature probe short circuit. Several errors can be packed in one message by “ Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking per
48、mitted without license from IHS-,-,-BS EN 1434-3:2008EN 1434-3:2008 (E) 19 6.35 (15 * m) = integration time 15 minutes. In this case only one unit shall be used. The unit shall be indicated. Any time unit can be used. an absolute time of day: 6.34 (11:55:00) = time of occurrence (of a peak value, etc.). The “:“ separator marks the value as a time. There is no need for a unit. The value shall consist at least of hours and minutes.
