Modbus remote operation control system

Abstract

A Modbus remote operation control system is composed of a client Modbus interface agent, a Modbus device configuration service, Internet of Things server software, an Internet of Things gateway with a Modbus interface, and an edge Modbus interface agent; wherein the Internet of Things server software and the Internet of Things gateway with the Modbus interface form a basic Internet of Things service system. Herein, the Modbus equipment in the field is accessed to a remote interface service system through a wide area network by a Modbus interface proxy, and the system provides northbound Modbus application service to form a virtual remote Modbus interface; and on the basis, a user can realize remote interactive application of the Modbus equipment at any position of a wide area network through application programs such as a human-computer interface and control feedback. The remote interactive applications include but are not limited to field data acquisition, Modbus interface configuration and control, remote control feedback and the like. Under the support of the system, a user can transparently access and operate Modbus equipment remotely like on site.

Description

technical field [0001] The invention relates to the field of Internet of Things services, in particular to a Modbus remote operation control system. Background technique [0002] Modbus is an industrially widely used communication interface protocol between upper and lower computers. Due to the difference in underlying protocols and transmission formats, there are branches such as Modbus-RTU, Modbus-TCP, and Modbus-ASCII. At the application level, these branches are are completely equivalent and can be converted into each other. Generally speaking, the connection through Modbus protocol is limited in range, for example, the connection range of Modbus-RTU or Modbus-ASCII through RS-485 serial port is generally not more than 1 km. Although in theory, Modbus-TCP or Modbus-RTU over TCP equipment can access a designated master station or slave station within the entire Internet range, but in the current shortage of IPv4 address resources, it is not possible to use this kind of a...

AI Technical Summary

Problems solved by technology

Patent CN113364659A discloses a data acquisition system based on the Modbus protocol, which focuses on providing multiple buses and multiple hosts to solve the problem that when the host fails or the bus is broken, there are many single-point failures and failures in the implementation process. inefficiency

But neither of the above two patents solves the problem of remote debugging of Modbus equipment

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