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IEC 62056 is a set of standards for Electricity metering data exchange by International Electrotechnical Commission. The IEC 62056 standards are the International Standard versions of the DLMS/COSEM specification. DLMS or Device Language Message Specification (originally Distribution Line Message Specification〔What is DLMS? http://www.dlms.com/faqanswers/generalquestions/whatisdlms.php〕), is the suite of standards developed and maintained by the DLMS User Association and has been adopted by the IEC TC13 WG14 into the IEC 62056 series of standards. The DLMS User Association maintains a D Type liaison with IEC TC13 WG14 responsible for international standards for meter data exchange and establishing the IEC 62056 series. In this role, the DLMS UA provides maintenance, registration and compliance certification services for IEC 62056 DLMS/COSEM. COSEM or Companion Specification for Energy Metering, includes a set of specifications that defines the Transport and Application Layers of the DLMS protocol. The DLMS User Association defines the protocols into a set of four specification documents namely Green Book, Yellow Book, Blue Book and White Book. The Blue book describes the COSEM meter object model and the OBIS object identification system, the Green book describes the Architecture and Protocols, the Yellow book treats all the questions concerning conformance testing, the White book contains the glossary of terms. If a product passes the Conformance Test specified in the Yellow, Book, then a Certification of DLMS/COSEM compliance is issued by the DLMS UA. The IEC TC13 WG 14 groups the DLMS specifications under the common heading: "Electricity metering data exchange - The DLMS/COSEM suite". DLMS/COSEM protocol is not specific to electricity metering, it is also used for gas, water and heat metering. *IEC 62056-1-0:2014 Smart metering standardisation framework *IEC 62056-3-1:2013 Use of local area networks on twisted pair with carrier signalling *IEC 62056-5-3:2013 DLMS/COSEM application layer *IEC 62056-6-1:2013 Object Identification System (OBIS) *IEC 62056-6-2:2013 COSEM interface classes *IEC 62056-7-6:2013 The 3-layer, connection-oriented HDLC based communication profile *IEC 62056-8-3:2013 Communication profile for PLC S-FSK neighbourhood networks *IEC 62056-9-7:2013 Communication profile for TCP-UDP/IP networks Other IEC 62056 parts deal with Electricity metering - Data exchange for meter reading, tariff and load control *IEC 62056-21:2002 Direct local data exchange *IEC TS 62056-41:1998 Data exchange using wide area networks: Public switched telephone network (PSTN) with LINK+ protocol *IEC 62056-42:2002 Physical layer services and procedures for connection-oriented asynchronous data exchange *IEC 62056-46:2002+AMD1:2006 Data link layer using HDLC protocol *IEC 62056-47:2006 COSEM transport layers for IPv4 networks *IEC TS 62056-51:1998 Application layer protocols *IEC TS 62056-52:1998 Communication protocols management distribution line message specification (DLMS) server ==Interface classes== In DLMS/COSEM, all the data in electronic meters and devices are represented by means of mapping them to appropriate classes and related attribute values. Any real world thing mapped to an appropriate class type can be described by the attributes defined in the standard; and the methods defined therewith allow operations to be performed on the attributes. The Attributes and methods constitute an object. Conventionally The first attribute in any object is the logical_name, also defined as the OBIS code in case of LN referencing. It is one part of the identification of the object. Objects that share common characteristics are generalized as instantiations of an interface class with defined class_id. Instantiations of an interface class are called COSEM objects. IEC 62056-62 defines 19 interface classes for COSEM object model. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IEC 62056」の詳細全文を読む スポンサード リンク
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