Research and implementation of building distributed control system based on S7-200 PLC and PC

Author

Dacheng, Mei ; Zhimin, He ; Jie, Gong ; YiFei, Gu

Author_Institution

Sch. of Comput. Sci., Southwest Pet. Univ., Chengdu, China

Volume

4

fYear

2010

fDate

26-28 Feb. 2010

Firstpage

297

Lastpage

300

Abstract

In order to solve the problem of data transmission slow and poor real-time control in the distributed system composed of PC extended card CP 5611 and multiple plc s7-200, their communication patterns and RS-485 protocol standards are analyzed. PC and multiple PLC build distributed application system through serial port to convert RS232 to RS485. Slave PLC based on free-port mode, custom command word and data packet format receive commands and data from PC to realize fast data communication. The practical application has proved that this distributed application system is feasible, real-time control is excellent and data transmission is also reliable.

Keywords

data communication; distributed control; peripheral interfaces; programmable controllers; routing protocols; CP 5611 PC extended card; RS232-RS485 conversion; RS485 protocol standards; S7-200 PLC; communication patterns; data communication; data transmission; distributed control system; free-port mode; programmable logic controller; serial port; slave PLC; Communication system control; Control systems; Data communication; Distributed control; Logic; Petroleum; Programmable control; Protocols; Transmission lines; Transmitters; distributed control system; free port; interrupt; programmable controller;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer and Automation Engineering (ICCAE), 2010 The 2nd International Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4244-5585-0

Electronic_ISBN

978-1-4244-5586-7

Type

conf

DOI

10.1109/ICCAE.2010.5451690

Filename

5451690