IC693MAL645D

IC693MAL645D

人/机接口装置是用来实现操作人员与PLC控制系统的对话。zui简单、zui普遍的人/机接口装置由安装在控制台上的按钮、转换开关、拨码开关、指示灯、LED显示器、声光报警器等器件构成。对于PLC系统，还可采用半智能型CRT人/机接口装置和智能型终端人/机接口装置。半智能型CRT人/机接口装置可*安装在控制台上，通过通信接口接收来自PLC的信息并在CRT上显示出来；而智能型终端人/机接口装置有自己的微处理器和存储器，能够与操作人员快速交换信息，并通过通信接口与PLC相连，也可作为独立的节点接入PLC网络。 

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