Research on Technique of Real-time Communication between Programmable Logic Controller and Microcomputer

摘要

When PLC (Programmable Logic Controller) and microcomputer communicate in real-time system, the technique of real-time communication between PLC and microcomputer will be used in many areas. This paper research technique and solve the real-time communication problem between PLC and microcomputer. The usage of OMRON PLC and C++ program language, and use the example of real-time communication between PLC and microcomputer in control protecting system of microwave transmitter to illuminate the basic means and technique in real-time system design and communication software design, including the core technique of real-time communication. The practical using proves the validity and the value of this technology.