ANSI C12标准委员会在全国范围内采用了IEC 62056-6-2第3版电能计量数据交换——DLMS/COSEM套件第6-2部分:COSEM接口类。IEC 62056的本部分规定了通过通信接口看到的仪表型号。通用构建块是使用面向对象的方法定义的，以接口类的形式对从简单到非常复杂的功能进行建模。附录A至F（资料性附录）提供了与某些接口类相关的附加信息。

ANSI C12 Standards Committee makes an identical national adoption of IEC 62056-6-2 Ed. 3 Electricity Metering Data Exchange - The DLMS/ COSEM Suite Part 6-2:COSEM Interface Classes. This part of IEC 62056 specifies a model of a meter as it is seen through its communication interface(s). Generic building blocks are defined using object-oriented methods, in the form of interface classes to model meters from simple up to very complex functionality. Annexes A to F (informative) provide additional information related to some interface classes.