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探讨了现场总线的拓扑结构 ,以 Profibus- DP工控网为基础 ,分析了其通信机理 ,详细说明了通信方式和链接方式 ,并建立了基于 PL C的主从站电机控制现场总线网络
The topology of fieldbus was discussed. Based on Profibus-DP industrial control network, the communication mechanism was analyzed, and the communication method and linking method were described in detail. The PLC-based master-slave motor control field bus network