TTHE STANDARD OF CHOICE FORSMART METER DATA EXCHANGE

Energy metering has been deeply transformedby new energy policies, market environmentsand technologies. The new, smart generationof meters handle not only energy but also dataflows supporting a wide range of business andoperational processes and functions. Smartmeters play a key role in operating energy markets and improving efficiency by providingsuppliers and users with energy information.Deployed in large numbers they change theway energy is generated, distributed and used.

Well specified, widely accepted standards areessential in building efficient, interoperablemetering systems.

DLMS/COSEM meets the need for such standards.

The DLMS/COSEM standardization frameworkis based on the principle of one common datamodel and application layer, used over arange of communication media. This principlereflects the fact that the data model standards are driven by the use cases whiledata communication standards are driven bytechnology evolution.

DLMS/COSEM specifies the COSEM datamodel, the DLMS application layer protocoland communication profiles. It continuouslyevolves to meet new requirements. It is theonly global standard for meter data exchangeadopted by global, regional and national standards organizations.

The Blue BookSpecifies the functional data model of themeter as seen through its interfaces. Using theobject oriented approach, it specifies COSEMobjects that interact with each other to realizethe functions required. The objects – and thedata they hold – are identified by the OBIScodes.

The Green BookSpecifies how to access data and how to transport the resulting messages over thecommunication media.

DLMS application layer serv ices allow establishingsecure associations betweenapplications running in metersand central systems, andaccessing COSEM objects toread / write data and executeactions re-motely. Pull andpush operation is supported.

The Green Book also specifieshow application data and messages are protected using cryptographic algorithms.

Communication profiles specify howDLMS/COSEM is used over various communi-cation channels and media. Lower protocollayers use widely accepted international standards.

The Yellow BookSpecifies abstract conformance test plans andthe testing and certification process.

The White BookContains a glossary of terms that help under-standing the specification.

KKey characteristics

EvolutiveStandard extension mechanisms are availablethat facilitate adding new features while main-taining backward compatibility. The COSEMmodel, the DLMS services and the communica-tion profiles can be extended independently.

FlexibleThe standard elements can be freely combinedto tailor the system to the target application.

InteroperableThe self-descriptive COSEM object model,negotiation of the features implemented,standard identifiers and data types ensureinteroperability between products of differentvendors. Companion specifications specifychoices where these are provided to close anyinteroperability gaps.

Secure end-to-endAdvanced data access and data transport securityfeatures based on proven cryptographic standards ensure end-to-end security betweensystems of market participants and the meterthrough the metering head end system.

EfficientData organization tools, efficient encoding as well as adaptation to communication channel characteristics ensure low overheadand efficient data exchange.

DLMS/COSEM has beenconceived to modeladvanced meteringand control functionsfor all energy types inall market segmentsand to exchangemetering data over all

communication media.

Specific COSEM objects– currently some 50different interface classes– are available to hold individual measurement

and configuration data orgroups of such data, to control

functions based on time or events, to controlaccess to data, to manage the meter, its security functions and its communicationinterfaces.

The various kinds of COSEM objects can beused the same way for metering and controlling electrical, gas, water, heat energyand more. The OBIS codes are energy typespecific to reflect the differences in physicalquantities and the way they are processed.

With the COSEM model a large range ofmetering and control functions, like billing, loadprofiling, power quality measurement, revenueprotection, customer information, load andsupply control can be modelled. Managementfunctions include configuration, parametrization,firmware update, security, meter and communication channel supervision.

International standardization and certificationof compliance to the standard are key elementsof the activities of the DLMS UA.

The development and maintenance of theDLMS/COSEM specification takes place inworking groups bringing together the bestexperts in the industry. Market requirementsand use cases are analysed and mapped toCOSEM interface classes, OBIS codes, protocolsand test procedures. The contents of theColoured Books are offered to internationaland regional stand ards organizations.

The DLMS UA has developed and operates acompliance certification process in coopera-tion with the company EuroDCS GmbH. Theabstract test plans are specified by the DLMSUA. The Conformance Test Tool is availablefor members through EuroDCS GmbH. Testreports are verified and Certificates areissued by the DLMS UA.

IECDLMS/COSEM was adopted in 2002 by the IECas the IEC 62056 suite for electricity metering.The second edition was published in 2006 andthe third edition in 2013. The DLMS UA isliaised with IEC TC 13 WG 14 and acts as theregistration authority.

CENDLMS/COSEM was adopted in 2002 by CEN aspart of the EN 13757 suite for metering energytypes other than electricity. A second editionwas published in 2013. The DLMS UA is liaisedwith CEN TC 294 and acts as the registrationauthority.

CENELECDLMS/COSEM is the basis of developing newcommunication profiles using power line carrierby CENELEC TC 13 WG 02 under the smartmetering standardization mandate M/441.The DLMS UA is a Technical Liaison Partner ofCENELEC.

IINTERNATIONAL STANDARDIZATIONAND COMPLIANCE CERTIFICATION

TTHE DLMS USER ASSOCIATION

The DLMS UA is a non-profit organizationfounded in 1997 by leading utilities and metermanufacturers. Today it is a global organizationwith 250+ members from all continents and 50+ countries involving utilities, metermanufacturers, system developers, systemintegrators and chip manufacturers.

MissionTo establish and keep DLMS/COSEM as theleading standard for smart meter data exchange, to foster the operation of energymarkets, facilitate energy efficiency andimprove business efficiency for energy marketplayers.

StrategyInvolve users of the standard in the develop -ment of the specification. Drive internationalstandardization. Promote the benefits ofDLMS/COSEM to potential users and helpthem in developing companion specifications.

MembershipMembership is open to entities engaged in designing, manufacturing, supplying andoperating metering systems. AssociatedMembership is open to organizations havingcommon interest with the DLMS UA.

BenefitsBenefits include free access to the Books,involvement in forming and deploying thestrategy, technical support, and access to conformance testing and certification.

Services• Specification development and mainte-

nance in cooperation with IEC, CEN andCENELEC

• Operation of the conformance testing andcompliance certification scheme

• Training and technical support• Registration authority for the IEC 62056 / EN

13757-1 DLMS/COSEM standards

ABB AB Cewe-Control, Nyköping, Sweden • AcBel Polytech Inc., New Taipei City, Taiwan • Accenture B.V., Amsterdam, Netherlands • Aclara, Hazelwood, MO 63042, USA• ADD - Bulgaria Ltd., Plovdiv, Bulgaria • ADD GRUP, Chisinau, Republic of Moldova • Advance Metering Technology Ltd., India • Advanced Electronics Company, SaudiArabia • AEM S.A., Timisoara, Romania • AKTEK BILGI ILETISIM TEKNOLOJISI, Turkey • Alcatel-Lucent, Paris, France • Alliander, Duiven, Netherlands • ALSI AssistanceLogiciels, Valence, France • Ami Tech (India) Pvt Ltd., Hyderabad, India • AMPLIA SOLUCIONES S.L., Madrid, Spain • ANACLE SYSTEMS PTE LTD, Singapore • ANDREA infor-matique, Paris, France • APATOR S.A., Torun, Poland • Aricent Group, Gurgaon, India • ASAIS, Noisy le Grand, France • Asseco Poland SA, Rzeszów, Poland • Atmel SpainSAU, Zaragoza, Spain • Atos WorldGrid, Meylan, France • Atos Worldline GmbH, Aachen, Germany • Ausgrid, Homebush NSW 2140, Australia • Axiros GmbH,Höhenkirchen, Germany • Bär Industrie-Elektronik GmbH, Germany • Beijing Fuxing Xiao-Cheng Electronic, China • Bekto Precisa d.o.o., Bosnia and Herzegovina • BentecElectricals & Electronics, India • Bglobal Metering Ltd, Darwen BB3 0FG, U.K. • Bittner+Krull Softwaresysteme GmbH,Germany • CAHORS, Mercues, France • CambridgeConsultants Ltd, Cambridge, U.K. • Cason Engineering Plc, Érd, Hungary • Central Power Research Institute, India • Cewe Instrument AB, Nyköping, Sweden • CGI IT UKLtd, Edinburgh, U.K. • CIRCUTOR, S.A., Viladecavalls, Spain • CITI d.o.o. Beograd, Belgrade, Serbia • CJSC "Radio and Microelectronics", Russia • CJSC "Energomera",Stavropol, Russia • Coherent Technologies Ltd., U.K. • Comitato Italiano Gas (CIG), Italy • Conlog (Pty) LTD, Republic of South Africa • Connode AB, Sundbyberg, Sweden• CONTAR Electrónica Industrial, Portugal • COPALP S.A., Echirolles, France • Corinex Communications Corp, Canada • CPL CONCORDIA, Concordia s/S (MO), Italy •CPPCEM, Harbin, P.C. 150040, China • Cuculus GmbH, Ilmenau, Germany • Current Group, Mägenwil, Switzerland • De Jaeger Automation bvba, Belgium • DECCANINFRATECH.COM, Hyderabad, India • Delhi Control Devices Pvt. Ltd., India • Digicom S.p.A., Cardano al Campo, Italy • Digital Meters Company, United Arab Emirates •DVGW Deutscher Verein, Bonn, Germany • Eandis, Mechelen 2800, Belgium • EDMI Pty Ltd, Brendale Qld 4500, Australia • EDP Valor Gest?o Integrada de Serv., Portugal• EFACEC Engenharia e Sistemas SA, Portugal • EFR -, München, Germany • EL SEWEDY Electrometer Egypt, Giza, Egypt • ELDAS Elektrik Elektronik San. Tic. A.S., Turkey• Electric Power Research Institute, China • Electricité de France R&D, Clamart, France • ELECTRONIC AFZAR AZMA Co., Tehran, Iran • Elektromed Electronic Ind. Co.,Ankara, Turkey • ELGAMA-ELEKTRONIKA, Vilnius, Lithunia • Elster Electricity LLC, Raleigh, NC 27610, USA • Elster GmbH, Mainz-Kastel, Germany • ELSTER MesstechnikGmbH, Germany • eMeter Corporation, San Mateo, USA • EMH metering GmbH & Co. KG, Gallin, Germany • EM-Lite Limited, Peterborough PE1 5EL, U.K. • EMSYCONGmbH, Bad Bramstedt, Germany • EnBW Operations GmbH, Karlsruhe, Germany • ENEL d.o.o. Beograd, Belgrade, Serbia • Enel Distribuzione SpA, Roma (RM), Italy •Enerdis, ANTHONY, France • EnergyICT n.v., Kortrijk, Belgium • ENEXIS, Rosmalen, Netherlands • ERDF, Nanterre, France • Ericsson, Rome, Italy • ESMIG, Brussels, Belgium• ESTABANELL ENERGIA, Granollers, Spain • EURIDIS Association, Paris, France • EuroDCS Energiedaten AG, Koblenz, Germany • E-Utile S.p.A., Milano, Italy • FARAB,Tehran 15875-8777, Iran • EVELER, NANTERRE, France • EVN Netz GmbH, Maria Enzersdorf, Austria • EWG, Niš, Serbia • F.IMM S.R.L., • Rovigo, ItalyF.IMM S.R.L., Rovigo,Italy • FARAB, Tehran 15875-8777, Iran • Federal Electricity and Water Authority, UAE • FLAG ELECTRONIC CO.,LTD., China • G4S Utility Services, Newcastle Upon Tyne,U.K. • Gas Natural Fenosa, Barcelona, Spain • GE Fuji Meter Co.,Ltd., Nagano, Japan • Gemalto SA, Meudon Cedex, France • General Electric Company, Somersworth, USA• Genus Power Infrastructres Limited, India • GNARUS ENGINEERING Services Ltd., Hungary • Görlitz AG, Koblenz, Germany • Grid Net Inc, San Francisco, USA • GRIN-PAL Energy Management, South Africa • Guangzhou Sunrise Electronics, China • GWF MessSysteme AG, Luzern, Switzerland • Hangzhou Chint Meter Technology, Ltd,China • Hangzhou PAX Electronic Technology Co., China • Hangzhou Sunrise Technology Co. Ltd., China • Hangzhou Xili Watthour Meter Man., China • Heinz LackmannGmbH & Co., Germany • Hewlett Packard, Meyrin, Switzerland • Hexing Electrical Co., Ltd., China • Holley Metering Ltd., Hangzhou, China • HPL Electric & Power Pvt.Ltd., India • HUAWEI TECHNOLOGIES CO.,LTD., China • Hydrometer GmbH, Ansbach, Germany • IBERDROLA DISTRIBUCION S.A.U., Bilbao, Spain • IBM, Bois-ColombessCEDEX, France • icube, Goumoens-la-Ville, Switzerland • Incotex Ltd., Moscow, Russia • INDRA, Alcobendas (Madrid), Spain • Industrial Technology Research Inst., Taiwan• Info Solution SpA, Vimodrone, Italy • Innovation Technology Group SA, Poland • Innsoft Sp. z.o.o., Warszawa, Poland • INSIDE Secure B.V.,Vught, Netherlands • InstituteFor Information Industry, Taiwan • Instituto Tecnologico de la Energia, Spain • InterCEL Pty Ltd, Australia • IPESOFT s.r.o., Žilina, Slovak Republic • Irdeto, LS Hoofddorp,Netherlands • ISKRAEMECO d.d., Kranj, Slovenia • ITF Fröschl GmbH, Walderbach, Germany • ITF-EDV Fröschl GmbH, Walderbach, Germany • ITRON ITALIA S.p.A., Italy• IUSA SA DE CV, Mexico • Janz - Contadores de Energia, SA, Portugal • Jilin Yongda Group Co., Ltd., China • JM-TRONIC Sp. z o.o., Warszawa, Poland • Jomar SoftcorpInternational, Canada • Kalki Communication Technologies Ltd, India • Kamstrup A/S, Skanderborg, Denmark • KEMA Netherlands BV, ET Arnhem, Netherlands • KEPRI/ KEPCO, Daejeon-city, South Korea • Kerman Tablo Corp., Tehran, Iran • KNX Association, Brussels-Diegem, Belgium • Korea Electrotechnology, South Korea • KoreaTesting Laboratory, South Korea • KOREA, PYUNGIL.COM, South Korea • KPN B.V., Den Haag, Netherlands • KUMHOENG CO.,LTD, DeaGu, Korea • Landis+Gyr AG, Zug,Switzerland • Larsen & Toubro Limited, India • LG Uplus Co., Seoul, South Korea • LINYANG Electronics, Qidong 226200, China • LS Industrial Systems Co., Ltd., SouthKorea • LUNA ELEKTRIK ELEKTRONIK A.S., CIGLI, Turkey • Matrikon, Edmonton Alberta T5J 3N4, Canada • Matrix Energy Pvt. Ltd, Bangalore, India • Maxim India IntegratedCircuit Design, India • M-Bus User Group, Uni Paderborn, Germany • Mega Power Automation Intern., Hong Kong • METER&CONTROL, Zemun, Serbia • MeteRSit S.r.L.,Padova, Italy • METRONA Wärmemesser Union, Germany • Microstar Electric Company Limited, China • MicroTech, Lahore, Pakistan • MIKROELEKTRONIKA A.D., Bosnia& Herzegov. • "MIR" Research and Production Ass., Russia • MIRTEK LTD., Stavropol, Russia • Misa Sdn Bhd, Shah Alam, Selangor, Malaysia • Mitsubishi ElectricCorporation, Japan • Modern Meters Co., Damascus, Syria • momas systems nigeria limited, Lagos, Nigeria • Moxa Systems Co; LTD., Taipei, Taiwan • NAMJUN CO., Ltd.,South Korea • Nanjing Yuneng Instrument Co.,Ltd, China • NARI Group Corporation -, Nanjing 21003, China • NEC Corporation, Tokyo, Japan • Ness Hungary Ltd.,Budapest, Hungary • Netinium B.V., Wormer, Netherlands • Network Systems & Technologies (P), India • NIK-ELEKTRONIKA Ltd, Kiev, Ukraine • Ningbo Sanxing ElectricCo., Ltd., Ningbo, China • Ningxia LGG Instrument Co.,Ltd.Yinchuan, China • North China Grid Company Limited, China • NUCLEO DE COMUNIC. Y CONTROL, Spain • NXPSemiconductors, Leuven, Belgium • Omne Agate Systems (P) Ltd, Chennai, India • OMNISYSTEM CO., LTD, South Korea • ORACLE Deutschland B.V. & Co. KG, Germany •ORBIS Tecnología Eléctrica S.A., Madrid, Spain • Osaki Electric Co., Ltd., Switzerland • PAFAL Joint Stock Company, Swidnica, Poland • Pak Elektron Ltd. (PEL) Pakistan,Pakistan • Panasonic Corporation, Nara 639-1188, Japan • Paud Raad Industrial Group, Iran • PIETRO FIORENTINI, Milano, Italy • PowerOneData International, India •Primestone S.A., BOGOTA D.C., Colombia • ProtonWorld NV, Zaventem, Belgium • Provincial Electricity Authority, Thailand • PS Tec Co., Ltd., Seoul, South Korea • QingdaoTechen Electronic Technology, China • Rahrovan Sepehr Andisheh Pte.Co., Tehran, Iran • Raychem RPG Pvt. Ltd., Taluka Khed, India • Renergy Micro-Technologies,Shenzhen, China • Renesas Electronics Singapore Pte., Singapore • RIZ Transmitters Co., Zagreb, Croatia • Robotron Datenbank-Software GmbH, Germany • Sacofgas 1927SpA, Milan, Italy • SAGEMCOM, CERGY PONTOISE CEDEX, France • Salient Systems Limited, UK • Sanjesh Afzar Asia Ltd. Co., Tehran, Iran • SATEL SPAIN, S.L., Las Rozas(Madrid), Spain • Schneider Electric, Saanichton, Canada • SCHWARTZ and CO S.A., Luxembourg • Secure Meters (UK) Ltd., Winchester, U.K. • SELMA, Berlin, Germany •Sensus, London W4 5YA, U.K. • Seochang Electric Communication, South Korea • SHENZHEN CLOU ELECTRONICS CO., LTD, China • Shenzhen Golden Square TechnologyCo., China • Shenzhen Haoningda Meters Co., Ltd., China • Shenzhen Hexcell Electronics Technology, China • Shenzhen Inhemeter Co., Ltd., China • Shenzhen KAIFA tech-nology co.,ltd., China • Shenzhen Northmeter CO.LTD, China • Shenzhen Star Instrument Co.,Ltd, China • SHENZHEN TECHRISE ELECTRONICS CO., China • Siemens AGAustria, Vienna, Austria • Silver Spring Networks, Redwood City, USA • Sitel d.o.o., Belgrade, Serbia • Societ? Cooperativa Bilanciai, Italy • Sogecam Industrial S.A., Spain• ST Electronics (Info-Comm Systems) Singapore • Stedin, Capelle a/d Ijssel, Netherlands • Swemet AB, Linköping, Sweden • TATUNG Co., Taipei, Taiwan • Techem EnergyServices GmbH, Germany • Teclab srl, La Spezia, Italy • TECNALIA, Derio, Spain • Telecommunication Technologies LLC, Ukraine • Teplocom Holding, St. Petersburg, Russia• Terranova, Sesto Fiorentino FI, Italy • Texas Instruments - Smart Grid, Dallas, USA • TMA Data Management Ltd, U.K. • Toshiba Toko Meter Systems Co., Japan • TrilliantInc., Granby, Québec, J2J 2V2, Canada • TRIOS, Dnipropetrovsk 49008, Ukraine • T-Systems, Hamburg, Germany • UL TS BVXZ, Leiden, Netherlands • URMET TLC SpA,Rome, Italy • UTILIA S.p.A., Rimini (RN), Italy • Valenciana Smart Energy of Medit. Sea, Spain • Vialis, Colmar, France • Viko Elektrik ve Elektronik, Istanbul, Turkey • VixnetAfrica (Pty) Ltd, Republic of South Africa • VOLAG System AG, Staad, Switzerland • Wallaby Metering Systems Pvt. Ltd., India • Wasion Group Ltd., Changsha City, China• WAY2 TECHNOLOGY, Floianópolis, Brazil • WEG Equipamentos Elétricos S.A. Brazil • Westland Infra Energy Solutions, Netherlands • Xemex NV, Schoten, Belgium• XJ Metering Co., Ltd., Xuchang Henan, China • Yadav Measurements private Limited, India • Yantai Dongfang Wisdom Electric Co.,Ltd, China • Z.E.U.P. Pozyton Sp.z.o.o., Poland • ZERA GmbH, Königswinter, Germany • ZHEJIANG JOY ELECTRONIC TECHNOLOGY, China • Zhejiang Reallin Electron Co., Ltd, China • ZhejiangYongtailong Electronic Co., China • ZigBee Alliance, North Attleboro, USA • ZIV METERING SOLUTIONS S.L., Spain • ZPA Smart Energy a.s., Trutnov, Czech republic

DLMS User AssociationHeadquarters: Bahnhofstrasse 28, CH-6304, Zug, Switzerland

Office Tel.: +36 28 514 065, Fax: +36 28 514 065

www.dlms.com � dlms@dlms.com