IEC 62056

IEC 62056 is a set of standards for electricity metering data exchange by International Electrotechnical Commission.

In this role, the DLMS UA provides maintenance, registration and compliance certification services for IEC 62056 DLMS/COSEM.

If a product passes the conformance test specified in the Yellow Book, then a certification of DLMS/COSEM compliance is issued by the DLMS UA.

The IEC TC13 WG14 groups the DLMS specifications under the common heading: "Electricity metering data exchange - The DLMS/COSEM suite".

Conventionally, the first attribute in an object is the logical name, also defined as the OBIS code in case of LN referencing.

In case of high-security parameters, the meter challenges the handheld unit with a cryptographic password.

Occasionally a manufacturer will define a new quantity to measure, and in this case, a new or different data type will appear in the meter definition.

These modes are usually protected by anti-tampering features such as switches that sense if the meter enclosure has been opened.

The GCP provides a common framework for communication between meters and data collection systems, ensuring interoperability across different manufacturers and devices.