What is DLMS?

DLMS is the suite of standards developed and maintained by the DLMS User Association. First published in 1999, it was adopted in 2002 by the International Electrotechnical Commission (IEC) and the European Committee for Standardization (CEN) organizations in its series of IEC 62056 standards for smart metering. Recently, it was adopted in 2019 by the ANSI, the American National Standard Institute. It has been widely adopted, with over several hundred million meters worldwide using the DLMS/Companion Specification for Energy Metering (COSEM) standard – including by global utilities such as EDF, Ibedrola, EDP etc.

DLMS supports a variety of wired and wireless communication standards, including Cellular, PLC, Zigbee, WMBus, and Prime-PLC. Its flexibility to offer an application layer independent from the media layer enables utilities and end users to have the same application over any one, or a mix of many, communication technologies.
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