Absfract
When PLC (Programmable Logic Controller) and microcomputer communicate in real-time system, the technique of real-time communication between PLC and microcomputer will he 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 CH 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 communicationsoftware design, including the core technique of real-time Communication. The practical using proves the validity and the value of this technology.


摘要
當(dāng)PLC（可編程邏輯控制器）和微機(jī)通信在實(shí)時(shí)系統(tǒng)中，實(shí)時(shí)通信技術(shù)將應(yīng)用于PLC與微機(jī)的許多領(lǐng)域。本文研究方法，解決了PLC與微機(jī)之間的實(shí)時(shí)通信問(wèn)題。OMRON PLC 和C + +程序語(yǔ)言的使用， PLC與微機(jī)控制的實(shí)時(shí)通訊的范例。控制保護(hù)微波的發(fā)射器系統(tǒng)來(lái)實(shí)現(xiàn)基本手段和實(shí)時(shí)通信系統(tǒng)的設(shè)計(jì)和軟件設(shè)計(jì)，包括實(shí)時(shí)通信的核心技術(shù)。該實(shí)際使用證明這種技術(shù)的有效性和價(jià)值。