Method for downloading and updating chip program of electric energy meter

Abstract

The invention relates to a method for downloading update of a chip program of an electric energy meter, wherein, the following steps are executed on upper layer software: a. the upper layer software issues broadcast instruction frames from 1 to N; b. the upper layer software issues a question and answer instruction frame N+1, and a CRC16 test result which is outputted by the upper layer software is issued; c. the upper layer software issues a question and answer instruction frame N+2 and reads flag bit data which is returned by the electric energy meter; the following steps are executed on the electric energy meter: d. after broadcast instruction frame data is received by the electric energy meter, an update program state is switched to and corresponding update is performed; e. after the instruction frame N+1 which is issued by the upper layer software is received, the CRC16 test result which is issued by the upper layer software is compared with a CRC16 test result in the electric energy meter; f. after the instruction frame N+2 which is issued by the upper layer software is received, the electric energy meter returns an answering frame provided with the flag bit data to the upper layer software. By implementation of the invention, speed of downloading update of chip programs of electric energy meters during the process of mass production of electric energy meters is quicker, and the reliability is higher.

Description

technical field [0001] The invention relates to the field of electric energy meter and communication technology, more specifically, relates to a method for downloading and updating the electric energy meter chip program. Background technique [0002] In the production process of electric energy meters, there is generally a large amount of inventory reserved for emergencies. There are various types of products in the inventory, and the chip programs in the products are also different. When shipments are required, products of appropriate models are generally called out from the inventory, but the functions of the products in the inventory may not fully meet the market demand. At this time, it is necessary to download and update the chip program in the inventory to meet the needs of the market. need. In the mass production process, especially when the delivery time is tight and the shipment volume is large, it is particularly convenient and important. [0003] like figure 1 ...

AI Technical Summary

Problems solved by technology

[0010] Aiming at the above-mentioned defects of the prior art, the present invention will solve the problems of slow speed and low security in the method for downloading and updating the chip program of the electric energy meter in the prior art, and provides a method for downloading and updating the chip program of the electric energy meter. Updating method for high-speed, efficient and accurate downloading and updating of electric energy meters

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