Title :
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
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;
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
DOI :
10.1109/ICCAE.2010.5451690
