BS EN 62056-4-7-2016 PDF

Full title and description

STB BS EN 62056-4-7:2016 — Electricity metering data exchange — The DLMS/COSEM suite — Part 4-7: DLMS/COSEM transport layer for IP networks. This publication is the BS (British adoption)/EN edition of the IEC 62056 series part that specifies connection-less (UDP) and connection‑oriented (TCP) transport-layer behaviour, a wrapper sublayer and guidance for use on IPv4 and IPv6 networks for DLMS/COSEM application profiles.

Abstract

This standard defines the transport layer (TL) services and mappings used by the DLMS/COSEM application layer when operating over IP networks. It specifies both a connection‑less TL based on UDP and a connection‑oriented TL based on TCP, describes a wrapper sublayer used with these protocols, includes guidance on converting OSI‑style TL services to/from RFC‑style TCP/UDP function calls, and records IANA/DLMS registered port assignments and normative references to other parts of the DLMS/COSEM suite.

General information

• Status: Current (BS adoption of EN 62056-4-7:2016; tracked-change BS edition issued later).
• Publication date: EN edition published in 2016 (EN publication December 9, 2016; some national adoptions ratified in early 2017 — e.g. AENOR 1 Feb 2017).
• Publisher: British Standards Institution (BSI) as BS adoption of EN 62056-4-7:2016; original international text published under IEC as IEC 62056-4-7 (2015/2016 adoption).
• ICS / categories: 17.220; 35.100.10; 35.110; 91.140.50; 33.040.50 (electricity metering, physical/transport layers, networking).
• Edition / version: EN 62056-4-7:2016 (equivalent/identical to IEC 62056-4-7:2015 in content); BS adoption published under the BS EN designation.
• Number of pages: National publications vary slightly (typically 44–47 pages depending on national foreword/annex); common published length ~47 pages.

Scope

Specifies a connection‑less transport layer (using UDP) and a connection‑oriented transport layer (using TCP) as used by DLMS/COSEM profiles on IP networks (both IPv4 and IPv6). The document defines OSI‑style TL services for the DLMS/COSEM application layer, describes a wrapper sublayer used to map those services onto TCP/UDP function calls, and provides normative/ informative annexes including guidance on converting between OSI‑style TL services and RFC‑style TCP calls. It replaces the earlier IEC 62056‑47 (2006) transport‑layer text with a revised edition covering IP networks and related updates.

Key topics and requirements

• Definition of DLMS/COSEM transport layer services for IP networks (OSI‑style service descriptions mapped to TCP/UDP).
• Connection‑less TL based on UDP (message formats, sequencing, error handling guidance where applicable).
• Connection‑oriented TL based on TCP (connection setup, reliable transfer semantics, mapping of TL calls to TCP sockets).
• Wrapper sublayer specification used with UDP and TCP to present DLMS/COSEM TL services to the application layer.
• Applicability to both IPv4 and IPv6 networks and inclusion of DLMS/IANA registered port numbers for interoperability.
• Normative references to other DLMS/COSEM parts (application layer, COSEM interface classes, OBIS) and guidance annexes for conversions and examples.

Typical use and users

Used by utility communications architects, electricity meter manufacturers, firmware and device‑software developers, systems integrators, test laboratories and certification bodies implementing and testing DLMS/COSEM over IP networks. It is applied when designing meter communication stacks, gateways and head‑end systems that use DLMS application services across TCP/IP or UDP/IP transport.

Related standards

Part of the IEC/EN 62056 (DLMS/COSEM) series. Commonly referenced related parts include IEC/EN 62056‑5‑3 (DLMS/COSEM application layer), IEC/EN 62056‑6‑1 and ‑6‑2 (COSEM object model and interface classes), IEC 62056‑9‑7 (communication profiles for TCP‑UDP/IP where referenced historically), and other profile parts (parts 1, 3‑1, 7‑3, 8‑x as applicable). National adoptions (BS EN, DIN EN, UNE‑EN etc.) are nominally identical to the EN/IEC text.

Keywords

DLMS, COSEM, transport layer, TCP, UDP, IP networks, IPv4, IPv6, wrapper sublayer, electricity metering, smart metering, interoperability, IANA port, IEC 62056, EN 62056.

FAQ

Q: What is this standard?

A: It is the EN/BS adoption of IEC 62056‑4‑7 that defines the DLMS/COSEM transport layer for IP networks — specifying how DLMS application services are mapped to UDP and TCP (with a wrapper sublayer) for use on IPv4/IPv6 networks.

Q: What does it cover?

A: It covers the connection‑less (UDP) and connection‑oriented (TCP) transport layers for DLMS/COSEM, the wrapper sublayer, service definitions in OSI terms and guidance for converting those to/from RFC‑style TCP/UDP calls; it also records port assignments and normative references to DLMS/COSEM suite parts.

Q: Who typically uses it?

A: Meter manufacturers, firmware and communications stack developers, utility integration teams, test laboratories and certification bodies — essentially anyone implementing or testing DLMS/COSEM over IP networks.

Q: Is it current or superseded?

A: EN 62056‑4‑7:2016 is the current EN/BS adoption of the IEC 62056‑4‑7 text (IEC edition 2015). It replaced the earlier IEC 62056‑47:2006 transport‑layer document. National tracked‑change BS editions have been issued subsequently (e.g., a tracked changes BS EN edition in 2020). Check the issuing national body (BSI) for any amendments after 2016.

Q: Is it part of a series?

A: Yes — it is one part of the multi‑part IEC/EN 62056 DLMS/COSEM suite (parts covering framework, application layer, object identification (OBIS), interface classes, other communication profiles and related transport/data link specifications). Implementers normally use this transport‑layer part together with the application‑layer and COSEM interface parts.

Q: What are the key keywords?

A: DLMS, COSEM, transport layer, TCP/IP, UDP/IP, wrapper, IPv4, IPv6, electricity metering, interoperability.