The DLMS UA Core Specifications include an object-oriented data model, an application layer protocol and media-specific communication profiles, that standardize message types for various operations, such as reading and writing data. Additionally, it also includes rules for formatting and transmitting these messages.
COSEM application models are specified in the Blue Book Part II
(OBIS applications models are specified in the Blue Book Part I)
Latest version available DLMS UA 1000-1 Ed 17 Part 2 V1.0
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