IEC 62056-8-8:2020

Overview

IEC 62056-8-8:2020 is an international standard published by the International Electrotechnical Commission (IEC) as part of the IEC 62056 series, which is widely recognized for specifying data exchange protocols for electricity metering. This standard details a communication profile that enables the use of the DLMS/COSEM suite - including its application layer and object model - over networks based on the ISO/IEC 14908 series.

By describing how DLMS/COSEM operates over ISO/IEC 14908 networks, IEC 62056-8-8 provides a foundation for the interoperability of smart metering solutions and energy management systems, supporting reliable and standardized data exchange especially in neighborhood area networks (NAN). The structure of the standard follows principles established in other key parts of the IEC 62056 series, ensuring consistency across implementation platforms.

Key Topics

• Communication Profile for ISO/IEC 14908 Networks
  Defines how the DLMS/COSEM application layer and object modeling are mapped onto the lower layers as specified by the ISO/IEC 14908 series, including control network protocol stacks and power line channel specifications.

• Integration with the COSEM Object Model
  Outlines the use of the COSEM (Companion Specification for Energy Metering) object model when communicating over ISO/IEC 14908 networks, based on references to IEC 62056‑5‑3, IEC 62056‑6‑1, and IEC 62056‑6‑2.

• Layered Communication Architecture
  Specifies how each communication layer, from the physical to the application layer, should be configured and interconnected, ensuring seamless data exchange and system compatibility.

• Security and Management
  Considers the necessary mechanisms for secure data transfer, registration, addressing schemes, connection management, and overall configuration within the network.

• Conformance and Interoperability
  Facilitates standardized implementations, which is critical for device interoperability, vendor neutrality, and system scalability.

Applications

• Smart Metering Systems
  IEC 62056-8-8 is primarily used in smart electricity metering, where secure and reliable data exchange over ISO/IEC 14908-compliant networks is required. This enables utilities and third-party energy service providers to collect, manage, and analyze energy usage data across large-scale deployments.

• Neighborhood Area Networks (NAN)
  The standard is particularly relevant for devices connected within neighborhood or community networks, providing a communication bridge between metering endpoints and utility back-office systems.

• Energy Management and Automation
  Supports energy automation systems with open, standardized protocols, facilitating integration with building management, distributed energy resources, and control platforms that utilize ISO/IEC 14908 technology, such as LonWorks.

• Multi-Vendor Ecosystems
  By standardizing the data exchange profile, IEC 62056-8-8 encourages the use of interoperable products from multiple manufacturers, simplifying procurement and deployments for utilities and system integrators.

Related Standards

• IEC 62056 Series
  The reference framework for metering data exchange, including:

  • IEC 62056-5-3: Defines the application layer for DLMS/COSEM.
  • IEC 62056-6-1 and IEC 62056-6-2: Specify the COSEM object modeling.
  • IEC 62056-1-0: Outlines the general structure for communication profiles.
  • IEC TS 62056-1-1: Provides additional structure guidance.

• ISO/IEC 14908 Series
  International standards on control network protocols and physical channel specifications, fundamental to the targeted communication environments addressed in IEC 62056-8-8.

• Other DLMS/COSEM Profile Standards
  IEC 62056-8-x parts address communication profiles for other media (e.g., TCP/IP, HDLC), supporting a wide variety of network topologies and infrastructures.

Implementing IEC 62056-8-8:2020 ensures a high level of robustness, future compatibility, and security for electricity metering data exchange on ISO/IEC 14908-based networks-paving the way for smart grid developments and advanced metering infrastructure (AMI) solutions.