Description
DCS网络的结构形式大致是三种，分别是总线形、环形和星形。星形结构通常只用于小系统。通讯协议有令牌广播式，问询式和存储转发式。问询式协议的网络要有交通指挥器。所有人机界面要向控制器请求数据时，必需通过交通指挥器，由交通指挥器来向控制器请求数据。控制器才能发送信息给人机界面。
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