Modbus address remapping method used for electric quantity module

Abstract

The invention relates to a modbus address remapping method used for an electric quantity module and belongs to the field of power grid information data gathering. The electric quantity module serves as a modbus slave station and comprises a modbus data zone and a modbus address remapping zone, and the electric quantity module can realize the modbus address remapping. A user can access a plurality of addressable discontinuous data registers of the electric quantity module through accessing continuous modbus address remapping zones; the communication efficiency is greatly improved.

Description

technical field [0001] The invention relates to an address remapping method, in particular to a modbus address remapping method for an electric power module. Background technique [0002] At present, power measuring instruments with communication interfaces are increasingly used in power grids to measure relevant power parameters, track the operating status of electrical equipment or lines, and realize the functions of power monitoring, power management and electrical safety. [0003] In this type of instrument, the communication protocol mainly adopts the modbus communication protocol. As a modbus slave station, the instrument is connected to a modbus master station device such as a host computer or a touch screen. Many measurement parameters of the instrument are correspondingly stored in different modbus registers. Master station equipment such as upper computer or touch screen, with the address as the index, realizes the read and write access to the instrument data. ...

AI Technical Summary

Problems solved by technology

Inefficient communication will limit the scale of the system. When there are many meters in the system, the scan cycle will become very long

[0005] Although the existing address remapping technology can achieve continuous access to multiple discontinuous addresses, they all belong to the memory access control technology in the computer field. "Storage Controller" invention patent, although it uses address remapping technology, but this technology is at the bottom of the device in this patent, it is not directly facing the user, and it is almost impossible to perceive

The modbus communication belongs to the field of industrial communication, and the content involved is the industrial modbus communication technology, which needs to directly face the user. The existing address remapping technology used for memory access control in the computer field cannot be transplanted into the modbus communication as it is.

Images