Multi-module electric energy meter data identification method

The invention discloses a multi-module electric energy meter data identification method, an uplink module and an extension module of an electric energy meter perform data interaction with a management unit based on a 645 protocol, and the method comprises the following steps: receiving response data of the extension module, and obtaining an extension module address in the response data, wherein the response data is response data of the extension module to the request data sent by the management unit; when the address of the extension module is the same as the address of the electric energy meter, using response data for internal business processing of the management unit; and when the address of the extension module is the same as the storage address of the extension module stored in the electric energy meter, sending the response data to the master station through the uplink module. The address in the data returned by the extension module and received according to the 645 protocol in the intelligent electric