Projects and Working Documents of IEC TC57 WG9

The two for the DLMS User Association most relevant documents have reached the status of International Standards. Both were created by WG9.

IEC 61334-4-41, 1996-03, Distributed Automation Using Distribution Line Carrier Systems Part 4: Data Communication Protocols; Section 4: Application Protocol; Clause 1: Distribution Line Message Specification (DLMS)

IEC 61334-6 (2000-06), Distribution automation using distribution line carrier systems - Part 6: A-XDR encoding rule: Defines a set of encoding rules that may be used to derive the specification of a transfer syntax for values of types defined in the DLMS core standard using the ASN.1 notation (see IEC 61334-4-41).

Excerpts of the documents can be viewed by members of the DLMS UA (password required). The standards can be ordered online at www.iec.ch (Webstore).