1. The Open System Interconnection Model (OSI)
2. The Transport Control Protocol /Internet Protocol (TCP/IP)

About OIML

The International Organization of Legal Metrology (OIML) is a worldwide, intergovernmental organization whose primary aim is to harmonize the regulations and metrological controls applied by the national metrological services, or related organizations, of its Member States.

1 Introduction

The primary aim of this International Document is to provide OIML Technical Committees and Subcommittees with guidance for establishing appropriate requirements for software related functionalities in measuring instruments covered by OIML Recommendations.

Furthermore, this International Document can provide guidance to OIML Member States in the implementation of OIML Recommendations in their national laws.

2 Scope and field of application

2.1 This International Document specifies the general requirements applicable to software related functionality in measuring instruments and gives guidance for verifying the compliance of an instrument with these requirements.

2.2 This Document shall be taken into consideration by the OIML Technical Committees and Subcommittees as a basis for establishing specific software requirements and procedures in OIML Recommendations applicable to particular categories of measuring instruments (hereafter termed "relevant OIML Recommendations").

2.3 The instructions given in this Document apply only to software controlled measuring instruments or electronic devices.

Notes:

• This Document does not cover all the technical requirements specific to software controlled measuring instruments; these requirements are to be given in the relevant OIML Recommendation, e.g. for weighing instruments, water meters, etc.
• This Document addresses some aspects concerning data security. In addition, national regulations for this area have to be considered.
• As software controlled devices are always electronic, it is also necessary to consider OIML D 11 General requirements for electronic measuring instruments.

Abstract: The technical content of this User's Guide is nearly identical to IEEE Std 1377™-2012 and ANSI C12.19-2012, using IEEE Std 1377-2012 as the baseline for the MC12.22 User's Guide. The protocol describes common structures that are provided for encoding data in communication between End Devices (meters, home appliances, C12.22/IEEE 1703/MC12.22 Nodes) and Utility enterprise collection and control systems using both binary codes and the Extensible Markup Language (XML) content. The Advanced Metering Infrastructure (AMI) and Smart Grid requirements are addressed as identified by the Office of Electricity Delivery and Energy Reliability of the U.S. Department of Energy and by the Smart Metering Initiative of the Ontario Ministry of Energy (Canada) and of Measurement Canada. Sets of tables are exposed that are grouped together into sections that pertain to a particular feature-set and related function such as Time-of-use, Load Profile, Security, Power Quality, and more. Each standard Table Set (Data Model) can be expanded or restricted by the Manufacturer of the C12.19/IEEE 1377/MC12.19 Device or home appliance using a descriptive registered syntax that is XML-based Table Definition Language (XML/TDL) and enterprise data-value management using Exchange Data Language (EDL) in a manner that is machine readable. The Tables support implementation of Gas, Water, and Electric devices, sensors and related appliances. Tables are also provided for network node configuration and management by referencing the companion standards IEEE Std 1703™-2012, ANSI C12.22-2012 and MC12.22 User's Guide-2013.

Scope: This standard defines a Table structure for utility application data to be passed between an End Device and any other device. It neither defines device design criteria nor specifies the language or protocol used to transport that data. The Tables defined in this standard represent a data structure that shall be used to transport the data, not necessarily the data storage format used inside the End Device.

Purpose: The Utility Industry has a need for a standard that provides an interoperable “plug-and-play” environment for field metering devices. The purpose of this standard is to define the framework and data structures for transporting Utility End Device data to and from End Devices and for use by enterprise systems.

This standard is intended to accommodate the concept of an advanced metering infrastructure such as that identified by the Office of Electricity Delivery and Energy Reliability of the U.S. Department of Energy; the Smart Metering Initiative of the Ontario Ministry of Energy (Canada); and the stated requirements of Measurement Canada for the approval of a metering device for use in Canada.

This standard is to provide a uniform, structured, and adaptive data model, such that Utility End Devices and ancillary devices (e.g., home appliances and communication technology) can operate in a “plug-and-play” and multisource enterprise Advanced Metering Infrastructure (AMI) environment.

This standard extends the definitions provided by IEEE Std 1377-1998 to include provisions for enterprise-level asset management, data management, and uniform data exchange capability, through the use of common and managed Extensible Markup Language (XML)/Table Definition Language (TDL) and XML/Exchange Data Language (EDL) End Device Class models.

Abstract: Complete document available here... The technical content of this User's Guide is nearly identical to IEEE Std 1703™-2012 and ANSI C12.22-2012, using IEEE Std 1703-2012 as the baseline for the MC12.22 User's Guide. The protocol provides a set of application layer messaging services that are applicable for the enterprise and End Device ends of an Advanced Metering Infrastructure (AMI). The application services include those useful for managing the AMI network assets defined by this standard. These messages may be transported over a wide range of underlying network transports such as TCP/IP, UDP, IEEE 802.11, IEEE 802.15.4 IEEE 802.16, PLC and SMS over GSM, over a wide range of physical media. Additionally, interfaces are defined for a Communication Module and a Local Port (e.g. ANSI C12.18/IEEE Std 1701™/MC12.18 optical port). The described protocol is tailored for, but not limited to, the transport of ANSI C12.19/IEEE 1377™/MC12.19 Table data. It also provides a means by which information can be sent in a secure manner using AES-128 and the EAX' mode. This work was developed jointly with ANSI (published as ANSI C12.22) and IEEE (published as IEEE Std 1703™).

Scope:The MC12.22 User's Guide provides an open-platform and requirements for AMI communications over networks. The protocol defines network messaging requirements of an advanced metering infrastructure such as that identified by the Office of Electricity Delivery and Energy Reliability of the US Department of Energy; the Smart Metering Initiative of the Ontario Ministry of Energy (Canada) and the stated requirements of Measurement Canada for the approval of a metering device for use in Canada.

Described within are four different but related communication modes of operation. One is the operation of an End Device (Node) over any network, a feature that all ANSI C12.22/IEEE Std 1703/MC12.22 conforming nodes must implement. The second is an exposed point-to-point interface between an MC12.22 Device (e.g., a meter) and an MC12.22 Communication Module (e.g., a network adaptor). The third is the capture, translation and transmission of one way messages (blurts). The fourth is communication with the End Device over a dedicated ANSI Type 2 optical local port that is backward compatible with that described by MC12.18.

Purpose: The Utility Industry has a need for a standard that provides an operable “plug and play” environment for field devices (e.g., meters, communication modules, and Utility systems). The purpose of this standard is to define the network framework and means to transport the Utility End Device Data Tables via any Local-area / Wide-area network for use by enterprise systems in a multi-source environment.

This standard is intended to accommodate the concept of an advanced metering infrastructure such as that identified by the Office of Electricity Delivery and Energy Reliability of the U.S. Department of Energy; the Smart Metering Initiative of the Ontario Ministry of Energy (Canada); and the stated requirements of Measurement Canada for the approval of a metering device for use in Canada.

This protocol is to provide a uniform, managed, adaptive, and secured network data and message delivery system for Utility End Devices and ancillary devices (e.g., home appliances and communication technology) that can operate in a “plug and play” and “end-to-end” multi-source enterprise AMI environment, in a manner that allows independence from the underlying network implementation (i.e., an End Device can implement this standard by utilizing a transceiver that is independent of the meter's metrology logic and for the meter not to depend on the design of the network that is serviced by that transceiver). The independence from the underlying native network protects the End Device from premature obsolescence that may occur as networks may come and go.