DLMS

Is short for Device Language Message Specification, and is an international data model and data format for data exchange in energy and water smart management, advanced sensing and monitoring and innovative smart metering. It aims to establish a standardized data exchange model for transmitting data between smart devices and head-end systems or amongst smart devices, in the energy or water sector.

It is internationally adopted under IEC 62056, ANSI C12, and EN13757-1 suites of standards.

The DLMS UA 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.

It can be applied over multiple types of communication technology. The development and maintenance of specifications adopted by IEC and ANSI is guaranteed by liaison agreements signed between DLMS UA and these respective organizations.