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本文以若干套地理上分散的PLC控制系统的集中控制为背景，提出了在Internet／lntranet环境下实现监控的一种“代理”模型，讨论了其实现要点和可能的改进方案。
Based on the centralized control of several sets of geographically dispersed PLC control systems, this paper presents a “proxy” model for monitoring in the Internet / lntranet environment and discusses the key points and possible improvements.