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The Compatibility of Communication Protocols for Devices in Industrial Networks
Author(s): 
Pages: 17-20
Year: Issue:  1
Journal: ORDNANCE INDUSTRY AUTOMATION

Keyword:  现场总线通信协议智能仪表PML协议自由口通信;
Abstract: 针对工业控制现场总线网络中存在设备通信协议不兼容的问题,提出了一种采用自由口通信兼容不同类型工控设备的通信方案.该方案将自由口编程完全采用智能仪表的特定通信协议,既简化网络结构,又节约布线.并以3720ACM三相智能电力测控仪的PML通信协议和典型工控设备PLC的自由口通信模式为例,剖析了PML和PLC通信数据结构,介绍了利用VISUAL C++完成通信的上位机程序流程图、以及打开串口、启动通信时钟、发送数据帧和接受数据等源程序.
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