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Design and Implementation of MODBUS Slave in the Chromatograph Control System

Xiaohong Wu

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Abstract

In development of chromatograph system,to solve communication issue between ARM7 and mcgsTpc touch screen and improve its stability and reliability,the serial communication based on the Modbus RTU protocol is used.To be specific,in S3C44BOX microprocessor,μC / OS-II real-time operating system is used as the software platform to analyze design and implementation course of Modbus slave station in detail,thus solving transmission issue of floating-point numbers by using read or write register function based on the Modbus RTU protocol and realizing design of Modbus slave communication application.Communication between ARM7 and touch screen are tested and verified to be stable and reliable.

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What this paper is about

In development of chromatograph system,to solve communication issue between ARM7 and mcgsTpc touch screen and improve its stability and reliability,the serial communication based on the Modbus RTU protocol is used.To be specific,in S3C44BOX microprocessor,μC / OS-II real-time operating system is used as the software platform to analyze design and implementation course of Modbus slave station in detail,thus solving transmission issue of floating-point numbers by using read or write register function based on the Modbus RTU protocol and realizing design of Modbus slave communication application.Communication between ARM7 and touch screen are tested and verified to be stable and reliable.

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Available abstract

In development of chromatograph system,to solve communication issue between ARM7 and mcgsTpc touch screen and improve its stability and reliability,the serial communication based on the Modbus RTU protocol is used.To be specific,in S3C44BOX microprocessor,μC / OS-II real-time operating system is used as the software platform to analyze design and implementation course of Modbus slave station in detail,thus solving transmission issue of floating-point numbers by using read or write register function based on the Modbus RTU protocol and realizing design of Modbus slave communication application.Communication between ARM7 and touch screen are tested and verified to be stable and reliable.

Key concepts: Modbus, Microprocessor, Embedded system, Reliability (semiconductor), Protocol (science), Serial communication, Computer science, Communications protocol

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