2011•DOAJ (DOAJ: Directory of Open Access Journals)Requires access

Electrical Parameter Acquisition System Based on S7-300/200 PLC and Modbus Protocol

XU Peng-peng

Abstract

The paper introduced hardware structure of electrical parameter acquisition system based on S7-300/200 PLC and Modbus protocol and design of program of S7-200 PLC, and expounded process that S7-300 PLC reads electrical parameters stored in S7-200 PLC through MPI communication. The practical application showed that the system is simple and convenient in application, stable and reliable in running, which has certain reference value in engineering.

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Available abstract

Key concepts: Modbus, Protocol (science), Process (computing), Embedded system, Simple (philosophy), Engineering, Computer science, Data acquisition