There were some limitations in current distributed measurement and control system layered network architecture. It is difficulty to improve the key parameters of real-time performance.
现有的分布式测控系统层次化网络体系结构存在着一些缺陷，难以提高分布式测控系统的实时性等关键性能参数。
The framework of the new illumination system is layered and distributed: as the bottom controller in system, PLC collects the data and controls the process;
新型照明控制系统采用分层分布式结构：以PLC构成系统的底层控制单元，完成生产过程的数据采集和过程控制；
The framework of the new illumination system is layered and distributed: as the bottom controller in system, PLC collects the data and controls the process;
新型照明控制系统采用分层分布式结构：以PLC构成系统的底层控制单元，完成生产过程的数据采集和过程控制；
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