Implementation of Modbus Communication Protocol based on ARM Coretx-M0

Author

Kelong Wang ; Daogang Peng ; Lei Song ; Hao Zhang

Author_Institution

Coll. of Autom. Eng., Shanghai Univ. of Electr. Power, Shanghai, China

fYear

2014

fDate

11-13 July 2014

Firstpage

69

Lastpage

73

Abstract

Power plant control of the embedded data acquisition system had been developed from centralized control, distributed control into fieldbus control. The paper puts forward a design program combining Modbus communication protocol with 32-bit ARM Coretx-M0 microprocessor as its core. The overall design scheme of the system and the content of Modbus Communication Protocol are introduced while the circuit interface of RS485 is given; The embedded real-time operating system μC/OS-II implements the communication between master station and slave station based on Modbus RTU communication protocol, and discusses the generation of Cyclic Redundancy Check in the Modbus Communication Protocol. Experiments show that system is able to implement the data acquisition and transmission reliably.

Keywords

centralised control; data acquisition; distributed control; field buses; power generation control; power plants; protocols; ARM Coretx-MO microprocessor; Modbus RTU communication protocol; RS485; centralized control; circuit interface; cyclic redundancy check; data acquisition; data transmission; design program; distributed control; embedded data acquisition system; embedded real-time operating system; field bus control; master station; power plant control; slave station; Coils; Laboratories; Microcomputers; Monitoring; Protocols; Registers; Reliability; μC/OS-II; ARM Coretx-M0; Modbus Communication Protocol; RS485; data acquisition;

fLanguage

English

Publisher

ieee

Conference_Titel

System Science and Engineering (ICSSE), 2014 IEEE International Conference on

Conference_Location

Shanghai

Type

conf

DOI

10.1109/ICSSE.2014.6887907

Filename

6887907