Title :
Study on S7-200 PPI Protocol Catching and its Communication Components
Author :
Xing, Li-Hong ; Xu, Qi-Yi ; Sun, Ya-Can
Author_Institution :
Qufu Normal Univ., Rizhao
Abstract :
The S7 -200 series PLC of SIEMENS Company has been applied extensively, and the communication is the focus of the engineer concerned in the application. The PPI protocol, a communication protocol developed by SIEMENS Company especially for S7-200, is an un-opened inner protocol. However, the engineer wants to understand this protocol in order to develop and integrate control system independently. With the un-opened characteristic of the SIEMENS PPI protocol content, a new method to succeed in catching and testing the PPI protocol is proposed based on the technique of serial communications. A class of the PPI communication components is developed in the C++ Builder environment. It can be successfully applied to the practical control systems.
Keywords :
protocols; PPI protocol catching; communication protocol; serial communications; Industrial electronics; Protocols;
Conference_Titel :
Industrial Electronics and Applications, 2007. ICIEA 2007. 2nd IEEE Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-0737-8
Electronic_ISBN :
978-1-4244-0737-8
DOI :
10.1109/ICIEA.2007.4318441