Research and Implementation of Web Control for PLC with PPI Protocol

Jin Sheng Sun; Jun Xu Wei

doi:10.4028/www.scientific.net/AMM.401-403.1939

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 401-403Research and Implementation of Web Control for PLC...

Research and Implementation of Web Control for PLC with PPI Protocol

Abstract:

Hardware connection and software implementation of communication are designed between the S7-200 PLC and Ethernet. Hardware composition is introduced and low-power microprocessor S3C2440 is selected as the control chip, DM9000 as Ethernet control chip, serial port RS-232 as testing interface. Monitoring page is designed to show the status of PLC. PPI protocol is known by analysing the communication process of S7-200 with PC. Embedded web server Boa is transplanted and CGI program is developed in Linux embedded operating system. It can realize the function of reading and writing I/O value and simulation value. The experiment shows that the system can realize reliable serial communication. It brings a great convenience to work.

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Periodical:

Applied Mechanics and Materials (Volumes 401-403)

Pages:

1939-1943

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.401-403.1939

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Online since:

September 2013

Authors:

Jin Sheng Sun, Jun Xu Wei

Keywords:

Embedded System, Embedded Web Server, PPI Protocol, Programmable Logic Controller (PLC), Serial Communication

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