DLMS: Device Language Message Specification

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DLMS/COSEM
The standard language for smart devices
Smart metering - and more generally, smart devices - need a globally accepted standard language that ensures interoperability, efficiency and security.
DLMS/COSEM provides just that.
DLMS - Who we are

Recently joined member

29.11.2018 AB Energijos skirstymo operatorius Lithuania more Information

Recently joined member

16.11.2018 Aidon Oy Finland more Information

Recently joined member

24.10.2018 Goldcard Smart Group Co., Ltd. China more Information

Recently joined member

12.09.2018 Pivot Access Ltd. more Information

Recently joined member

03.09.2018 Ever Meter Company Limited Myanmar more Information

Recently certified product

07.12.2018 OTUS1 Cert.No. 2047 more Information

Recently certified product

28.11.2018 wBEC 44(X) Cert.No. 2046 more Information

Recently certified product

26.11.2018 IM150 Cert.No. 2045 more Information

Recently certified product

23.11.2018 Landis+Gyr ZA E460 1ph Din-Rail Adesto Cert.No. 2044 more Information

Recently certified product

23.11.2018 Landis+Gyr ZA E460 1ph BS G3 Prepayment Cert.No. 2043 more Information

2018-08-09

DLMS UA General Meeting 2018 Autumn
The Autumn 2018 General Meeting of the DLMS UA takes place on 5th November 2018 from 15:00 to 17:30 in Vienna, Austria, linked to the EUW 2018 event.
2018-08-09

The DLMS UA at EUW 2018
The DLMS User Association participates at EUW 2018 on 6-8th November 2018 in Vienna,
2018-09-21

CEN TC294 Meeting
CEN TC294, "Communication systems for meters" will meet in Berlin on November 28.

2019-02-05

DLMS UA General Meeting 5th November 2018
The Autumn 2018 General Meeting of the DLMS UA took place on 5th November 2018 in Vienna, Austria, linked to the EUW 2018 event.
2018-11-07

DLMS UA White Paper efficiency released
Learn about the efficiency mechanisms of DLMS/COSEM!
2018-11-02

New version of CTT 3.1
Please ensure you are using the latest version, especially for certification purposes.
2018-09-21

Do you have the latest Publications?
DLMS User Association updates its documents on an ad-hoc basis, when the latest technology for the protocol or for testing is available.
2017-04-19

New version of the Green Book and the Blue Book
Green Book Edition 8.3 and Blue Book Edition 12.2 have been published.
2017-04-21

CTT 3.1 released
It is a pleasure to inform you that CTT 3.1 has been released on 2017-03-15.

Contact
DLMS User Association
- Company registration number CHE-440.972.101
- Bahnhofstrasse 28
- 6302 Zug
- CH Switzerland
- - Phone
    +36 28 514 065
  - Email
    L_moc__smld--smld
© DLMS User Association
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DLMS User Association - Who we are
The DLMS UA is a non-profit organization founded in 1997 by leading utilities and meter manufacturers to develop and support a standard for smart meter data exchange.
Today, it is a global organization with 300+ members from all continents and 60+ countries involving utilities, meter manufacturers, system developers and integrators, and chip manufacturers.