基于MODBUS/TCP的以太网总线适配器的数据交换

Data Exchange Between Master and ETHERNET Fieldbus Coupler Based on MODBUS/TCP Protocol

随着企业信息化进程的开展,管理网络与底层控制网络实现无缝连接显得极为重要。基于MODBUS/TCP开放式网络协议的以太网总线适配器,采用过程映像的方法,在内部存储区域中,划分了I/O模块过程映像区和变量过程映像区,并根据MODBUS地址对应关系,实现了监控工作站。可编程现场总线控制器(PFC)和I/O模块之间的开放式数据交换。这种采用以太网总线适配器数据交换的方式,可以真正的实现上位组态系统和底层数据采集模块的无缝连接。

With the development of enterprise information, the implementation of management network and bottom control network seamless connection is important. Adopting process image, the Ethernet fieldbus coupler based on MODBUS/TCP open network protocol plots I/O module process image and variable process image in internal storing area. Open data exchange between the master, Programmable Fieldbus Controller and I/O modules is realized based on the corresponding connections of MODBUS address. Seamless connection between epigyny configuration system and bottom data collection module can be realized by using this data exchange mode.