IEC 62056-9-7:2013

Overview

IEC 62056-9-7:2013 is an international standard specifying the DLMS/COSEM communication profile for TCP-UDP/IP networks. This standard is a critical part of the IEC 62056 series, which covers electricity metering data exchange protocols. Developed by the International Electrotechnical Commission (IEC), the standard defines how data from electricity meters can be securely and efficiently communicated over IP-based networks using the DLMS/COSEM suite. It supports a broad range of network environments, including wide area networks (WAN), neighbourhood networks, and local area networks (LAN), making it highly relevant for modern smart grid and advanced metering infrastructure (AMI) implementations.

Key Topics

• DLMS/COSEM Communication Profile: Defines the protocol stack structure for electricity metering data exchange over TCP and UDP/IP networks.
• Protocol Layers:
  • Application Layer: DLMS/COSEM application layer as per IEC 62056-5-3.
  • Transport Layer: COSEM transport layer for IPv4/IPv6 networks as defined in IEC 62056-47.
  • Network Layer: Internet Protocol version 4 (IPv4) or IPv6.
  • Data Link Layer: Any protocol supporting the network layer.
  • Physical Layer: Supported physical layers compatible with the data link layer.
• Identification and Addressing: Incorporates port numbers assigned by the Internet Assigned Numbers Authority (IANA) for DLMS/COSEM communication.
• Service and Message Handling:
  • Definition of confirmed and unconfirmed Application Association service invocations.
  • Support for long message transport using application layer block transfer.
  • Rules for releasing application associations using mandatory protocols.
• Support for Real-World IP Networks: Addresses constraints and considerations when deploying in actual IP network environments, including security and reliable data transfer.
• Targeted Environments: Suitable for remote data exchange with electricity meters and devices over various IP-enabled communication infrastructures.

Applications

IEC 62056-9-7:2013 is highly applicable for utilities and energy service providers involved in electricity metering data collection and processing. Its practical applications include:

• Advanced Metering Infrastructure (AMI): Enables reliable data exchange between smart meters and head-end systems over IP networks.
• Remote Meter Reading: Facilitates efficient and standardized remote access to meter data through TCP/IP or UDP/IP protocols.
• Tariff and Load Control: Supports control messaging and tariff-related communications over IP networks.
• Smart Grid Integration: Provides an interoperable communication framework essential for integrating metering devices into smart grid architectures.
• Wide Area and Local Networks: Adaptable to multiple network types-from residential local networks to large-scale neighborhood or wide area networks.

By standardizing the communication profile over IP networks, this IEC standard ensures interoperability amongst devices from different manufacturers, enabling consistent data exchange and streamlined meter management.

Related Standards

IEC 62056-9-7:2013 is part of the IEC 62056 series focused on electricity metering data exchange via the DLMS/COSEM protocols. Related standards include:

• IEC 62056-5-3: Specifies the DLMS/COSEM application layer essential for meter data modeling and operations.
• IEC 62056-47: Defines the COSEM transport layer for IPv4 networks, underlying the transport structure in TCP-UDP/IP communication.
• IEC 62056 Series: Provides the comprehensive suite of standards governing meter reading, tariff, and load control data exchange.
• ISO/IEC Standards: Aligns with ISO/IEC directives for international standardization and protocol development.

Implementing IEC 62056-9-7 in conjunction with these complementary standards ensures robust and globally accepted communication frameworks for electricity metering over IP networks.

Keywords: IEC 62056-9-7, DLMS/COSEM, electricity metering data exchange, TCP/IP communication profile, UDP/IP networks, advanced metering infrastructure, smart grid communication, electricity meter communication standard, COSEM transport layer, IEC metering standards.