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OMS specification

The OMS specification in 3 parts

The OMS specification currently consists of 3 parts that describe and define the essential properties of an Automatic Meter Readout (AMR) system in accordance with the OMS communication standard.
Volume 1

General Part

Communication between meter or actuator and gateway
Volume 2

Primary Communication

Communication between gateway and a network / Head End System (HES)

Generation 5

Uni- and bidirectional meters, sensors and gateways for wired and wireless M-Bus

Field of application

All meters, sensors and gateways for countries that allow 868 MHz (e.g. CEPT countries such as EU and EEA) including all German electricity meters (also with BSI requirements), battery-operated repeaters. This specification is prepared for the requirements of BSI TR03109 V1.1. The recommendations from the OMS report OMS-TR-01 have been adopted in this specification.

Status

Recommended for development, especially for meters in operation with the German Smart Meter Gateway.

Release 2023-12

Liste der Spezifikationen

Archiv mit vollständigem Release

Release-Archiv 2023-12

Volume 1 Issue 2.4.1

General Part 2.4.1

Annex A

Volume 2 Issue 5.0.1

Primary Communication 5.0.1

.

Annex A

OBIS Code List – Release F

Annex B

OMS Data Point List – Release G

Annex M

Requirements for OMS use case support – Release C

Annex N

Message examples – Release E

Annex P

Requirements for Wired M-Bus– Release C

Annex Q

OMS LPWAN– Release A

Annex R

Meter Reading Transmission via M-Bus Compact Profile; to meet BSI TR-03109-1 TAF7– Release A

Technical Reports

OMS Technical Report 09

Guide to Wired M-Bus Installations/Installationsleitfaden für Wired M-Bus

This guide provides comprehensive instructions for the installation and configuration of wired M-Bus systems and covers important topics such as network topology, device types and troubleshooting methods. It serves as a practical resource for installers and planners and ensures the reliable operation of M-Bus networks in various environments.

OMS Technical Report 08

OMS over mioty, Version 1.0.1

This document contains detailed guidelines for the implementation of OMS via mioty, a method that combines mioty LPWAN technology with the OMS standard. It covers the integration of M-Bus data via mioty and explains the necessary adaptations on different communication layers. The report is essential for engineers and developers working on the development of interoperable smart metering solutions using these technologies.

OMS Technical Report 07

M-Bus Compact Profile; to meet BSI TR-03109-1 TAF7, Version 1.0.1

This technical report describes the process of transmitting meter readings using the M-Bus compact profile to meet the requirements of BSI TR-03109-1 TAF7. It provides detailed guidelines for the implementation and processing of these transmissions within Smart Meter Gateways (SMGW). The report includes simulation results that demonstrate the effectiveness of the compact profile in minimizing data transmission collisions and ensuring high reliability in data reception.

OMS Technical Report 06

OMS over LoRaWAN, Version 2.0.8

This document provides detailed specifications and guidelines for the implementation of OMS over LoRaWAN, combining the strengths of LoRaWAN and M-Bus protocols to create a robust and flexible communication system for smart metering devices. It provides a comprehensive overview of the network architecture, security mechanisms and data exchange processes that are essential for reliable and secure operation of OMS-compliant devices over LoRaWAN networks.

OMS Technical Report 05

Sensors, Version 1.0.9

This document describes the specifications and standards for the integration of sensors into the OMS framework. It covers the applicable device types, VIB types and the corresponding data points to ensure interoperability and accurate data communication between different sensor devices. The report also provides detailed guidance on the implementation of M-Bus tags and the safety requirements needed for reliable sensor operation in smart metering systems.

OMS Technical Report 03

XML-Key Exchange, Version 1.0.2

This document provides comprehensive guidelines and specifications for the implementation and standardization of the wired M-Bus system as described in the EN 13757-2, -3 and -7 standards. It addresses various challenges, such as datagram inconsistencies and wiring issues, to ensure maximum interoperability between wired M-Bus products. The report also provides practical recommendations for network topology, cabling and physical layer to support reliable communication in different environments.

OMS Technical Report 02

Wired M-Bus, Version 2.0.3

This document provides comprehensive guidelines and specifications for the implementation and standardization of the wired M-Bus system as described in the EN 13757-2, -3 and -7 standards. It addresses various challenges, such as datagram inconsistencies and wiring issues, to ensure maximum interoperability between wired M-Bus products. The report also provides practical recommendations for network topology, cabling and physical layer to support reliable communication in different environments.

OMS Technical Report 02

Wired M-Bus, Version 2.0.2

This document provides comprehensive guidelines and specifications for the implementation and standardization of the wired M-Bus system as described in the EN 13757-2, -3 and -7 standards. It addresses various challenges, such as datagram inconsistencies and wiring issues, to ensure maximum interoperability between wired M-Bus products. The report also provides practical recommendations for network topology, cabling and physical layer to support reliable communication in different environments.

OMS Technical Report 02

Wired M-Bus, Version 1.0.4

This document provides comprehensive guidelines and specifications for the implementation and standardization of the wired M-Bus system as described in the EN 13757-2, -3 and -7 standards. It addresses various challenges, such as datagram inconsistencies and wiring issues, to ensure maximum interoperability between wired M-Bus products. The report also provides practical recommendations for network topology, cabling and physical layer to support reliable communication in different environments.

OMS Technical Report 01

Security, Version 1.1.0*

This technical report provides a detailed overview of the security mechanisms employed within the OMS framework, focusing on the implementation of encryption, authentication, and fragmentation methods. It includes guidelines on using AES-128 encryption and Transport Layer Security (TLS) to secure data transmissions in smart metering systems. The report also covers key management and the secure exchange of certificates, ensuring compliance with stringent security requirements for smart meters.
*The OMS Technical Report 01 was replaced by the OMS-Spec. Vol. 2 Annex F v4.2.1. However, it is still used by BSI TR-03109 v1.0.x.

The Standard for Remote Reading of Smart Meters

The Open Metering System is based on M-Bus. It is the only system definition across Europe which integrates all media (electricity, gas, heat and water incl. submetering) into one system. The OMS-Group e. V. is a nonprofit organization and interest group of meter manufacturers, utilities, meter operators, electronics manufacturers, communication firms, and IT companies.

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