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Overview / excerpts of the DLMS UA coloured books DLMS UA coloured books (password protected area) DLMS/COSEM specification DLMS/COSEM specification maintenance List of proposed amendments Approved Amendments List and maintenance of standard items List of standard OBIS codes and COSEM objects OBIS code maintenance process Requests for adding a new standard OBIS code List and maintenance of standard interface classes

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List and maintenance of standard items

List and maintenance of standard items in the DLMS/COSEM specification

The DLMS User Association is recognized by the International Electrotechnical Commission (IEC) as the registration authority for the IEC 62056-42, -46, -47, -53, -61 and –62 standards and provides general maintenance services for these standards.The registration and maintenance services are available for all and any users of the DLMS/COSEM specification.

	Standard	Item
1	Direct local data exchange / IEC 62056-21	Manufacturer's identification
2	Direct local data exchange / IEC 62056-21	Enhanced identification character
3	Physical layer / Green book / IEC 62056-42	Identifiers for protocol identification service
4	Data link layer / Green book / IEC 62056-46	LLC parameters
5	Application layer / Green book / IEC 62056-53	COSEM Application context name
6	Application layer / Green book / IEC 62056-53	COSEM Authentication mechanism name
7	Blue Book OBIS codes / IEC 62056-61	Standard OBIS codes
8	Blue Book Interface classes / IEC 62056-62	COSEM Logical device name
9	Blue Book Interface classes / IEC 62056-62	Standard interface classes and versions