描述
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
CCI Systems Electrical Dist. Box 208V, 50A, 3-Phase
TEGAL Electrical Dist. Junction Box 208V, 50A, 3-Phase
TEGAL Electrical Dist. Junction Box 208V, 50A, 3-Phase
CCI Electrical Dist. Junction Box 208V, 50A, 3-Phase
TEGAL Electrical Dist. Junction Box 208V, 25A, 3-Phase
CCI Electrical Dist. Junction Box 208V, 50A, 3-Phase