Implementation Under test (IUT)

The IUT shall be unambiguously identified by declaring the manufacturer, the type and the Management Logical Device name.

Generally, the type designation contains a group of letters and numbers.

As the DLMS/COSEM features implemented and tested are determined by the firmware of the IUT, the type designation shall also include the firmware identifier and version.

If the same firmware determining the DLMS/COSEM features implemented is used in several meter types that are different from each other e.g.:

• from the metrology point of view; or
• due to some other features that do not affect the DLMS/COSEM interface.

it is possible to include a list of types in the type designation.

The DLMS UA may request evidence to prove that such differences do not affect the DLMS/COSEM interface.