Description: In order to analyze PPI pro tocol to make personnel easily research, develop and integrate the control system, while the PPI protocol
of Siemens is not open to the public, on the basis of serial communication, by using method of multiple serial ports monitoring, the protocol has
been captured. With the aid of the third party software, the protocol is analyzed and tested. The method successfully resolves the problem of
how to capture S7-200 PPI protocol and the commun ication controls have been deve loped under C++ Builder env ironm ent to mi plement its application
in m easuring and contro l systems
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S7_200PPI.pdf
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