说明：  Modbus通信协议的FPGA实现 作者 于正林 张龙 黄勇 《现代电子技术》 2010年第11期 203-207,共5页 Modbus协议是一个应用广泛的工业现场总线协议,鉴于其简单、开放、帧格式紧凑等优点,于2008年正式成为我国国家标准。介绍一种通过Cyclone系列FPGA实现Modbus RTU模式的方法,首先给出一个可以通用于Modbus主设备和从设备的协议接口单元,然后基于该接口设计了一个通用的Modbus从设备协处理器。实践证明该方法能够满足工业环境的通讯要求,此外,该方法在其他FPGA上也具有一定通用性和推广价值。 关键词 MODBUS RTU FPGA VHDL
(FPGA implementation of Modbus communication protocol Authors Yu Zhenglin Zhang Long Huang Yong "Modern Electronic Technology" 2010-11 203-207, 5 pages Modbus protocol is a widely used industrial fieldbus protocol. In view of its simplicity, openness, and compact frame format, it officially became China's national standard in 2008. This paper introduces a method of implementing Modbus RTU mode through Cyclone series FPGA. First, a protocol interface unit that can be commonly used for Modbus master and slave devices is given, and then a universal Modbus slave device coprocessor is designed based on this interface. Practice has proved that the method can meet the communication requirements of industrial environments. In addition, the method has certain generality and promotion value on other FPGAs. Keywords MODBUS RTU FPGA VHDL)