A PLC distributed system for monitoring electric windows in some building is introduced, which used S7-200 PLC to construct PPI network, and adopted Kingview software to communicate with main PLC in PPI network. The control requirement, hardware structure, programming and configuration of the system are discussed. This kind of PLC monitoring network has simple structure and reference value.%采用S7-200 PLC建立PPI网络,并使用组态软件组态王与PPI网络中的主站进行通信,实现对某大楼电动窗进行监控的PLC分布式系统.从控制要求、硬件系统结构、编程和组态等方面对系统进行了详细介绍.实践表明:通过这种方式建立的PLC监控网络,结构简单,经济性较好,有一定的参考价值.
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