SIST EN IEC 62056-8-8:2020 PDF

EN IEC 62056-8-8:2020 - Communication profile for ISO/IEC 14908 networks

Overview

EN IEC 62056-8-8:2020 specifies how the DLMS/COSEM application layer and the COSEM object model (as defined in IEC 62056‑5‑3, -6‑1 and -6‑2) are mapped and used over the lower-layer protocols of the ISO/IEC 14908 series. In practice this creates a DLMS/COSEM communication profile for control networks (including powerline channels) enabling standardized electricity metering data exchange over ISO/IEC 14908 networks. The standard is part of the IEC 62056 suite and follows the structure of IEC 62056-1-0 and IEC TS 62056-1-1.

Key topics and technical requirements

• Protocol layering and mapping
  • Defines how DLMS/COSEM application services operate over the ISO/IEC 14908 protocol stack (physical, data link, network, transport).
  • Specifies a Service Mapping and an Adaptation Layer to ensure correct message encapsulation and flow.
• Identification, addressing and registration
  • Covers addressing schemes, object referencing and registration/connection management for COSEM application associations.
• Application services
  • Rules for ACSE-based association establishment/release (COSEM-OPEN/RELEASE), xDLMS services and transferring long application messages.
• COSEM object model and OBIS
  • Normative guidance on mandatory COSEM objects, object_list structure and OBIS relation for meter data semantics.
• Security
  • Multi-layer security considerations: DLMS/COSEM security mechanisms, adaptation layer protections and lower-layer options.
  • Includes Annex D describing the OSGP‑AES‑128‑PSK security suite (key derivation, secure channel initialization, authenticated encryption).
• Implementation and migration
  • Informative annexes provide examples, interface classes for ISO/IEC 14908, implementation guidance and migration paths.
• Media considerations
  • Guidance for media access, bandwidth, timing and use of powerline channels (references include ISO/IEC 14908-3 and EN 50065-1 for low-voltage signalling).

Applications and who uses this standard

• Utility companies implementing smart metering and grid monitoring systems.
• Meter manufacturers and firmware developers building DLMS/COSEM-compliant devices for ISO/IEC 14908 networks (including powerline communications).
• System integrators and network engineers designing field-area networks and head-end systems.
• Regulators and procurement teams specifying interoperable metering interfaces and security requirements.

Related standards

• IEC 62056-5-3 (DLMS/COSEM application layer)
• IEC 62056-6-1 (OBIS)
• IEC 62056-6-2 (COSEM interface classes)
• ISO/IEC 14908-1 and -3 (control network protocol stack and powerline channel)
• EN 50065-1 (signalling on LV installations)

Keywords: DLMS/COSEM, ISO/IEC 14908, electricity metering data exchange, communication profile, COSEM object model, OBIS, smart meters, powerline communications, OSGP‑AES‑128‑PSK.