modbus通信协议实现范文(10)

时间:2025-07-11

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MODBUS protocol implementate in the TCP/IP

Abstract: With the contempt of critics and users praise, MODBUS / TCP is indeed no longer a novelty. Moreover, since 1979 began to use the MODBUS protocol, for increase in Ethernet-based TCP / IP transmission technology is absolutely the necessary. MODBUS protocol itself and the object model service MODBUS / TCP were not changed, and simply use TCP / IP as a data transfer protocol. This makes the MODBUS have a series of agreements, currently including traditional MODBUS-RTU, MODBUS-Plus and MODBUS-TCP. All these protocols use the same application layer protocol - provides a unified user data and communication services. Analysis of MODBUS / TCP protocol composition, through the use of socket and multi-threading technology, designed based on MODBUS / TCP protocol Ethernet communications network, analyze the client / server model of the main characteristics of the communication, and gives specific implementation process. Constructed based on MODBUS / TCP and MODBUS industrial Ethernet can achieve industrial data acquisition, processing and communications functions for industrial automation, real-time communication network provides an effective solution.

Keywords: MODBUS / TCP、 Ethernet 、sockets 、industry 、TCP / IP

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