The COSEM model allows identifying, retrieving and interpreting the information held in any meter in a manufacturer independent, controlled and secure way. The logical name, together with the class_id and the version unambiguously identifies the meaning of the information presented by any interface object, in a manufacturer independent way. The first attribute of any object is the logical name, which is one part of the identification of the object.

On the other hand, interface objects are instances of interface classes. Objects that share common characteristics (same attributes and methods) make up an interface class identified by the class_id and version. An object may also offer a number of methods to either examine or modify the values of the attributes. Attributes represent the characteristics of an object by means of attribute values. The information that is held by an interface object is organised in attributes. There are also special objects controlling access (the association objects) and configuring the communication channels. The interface objects are specific to the metering domain, using well known concepts like register, demand register, profile, clock, schedule etc. An association object provides information about the resources available in the logical device in a given context, depending on the access rights. Access to the interface objects within a logical device is modelled by association objects. Information contained in each logical device is modelled by interface objects. Each and every logical device has a world-wide unique identifier called the logical device name.

The modelling uses an object-oriented approach.ĬOSEM models physical metering equipment as a set of logical devices. It is an interface model of communicating energy metering equipment, providing a view of the functionality available through the communication interfaces. COSEM stands for COmpanion Specification for Energy Metering.

Dlms Meter Serial Number