【摘要】 文章介绍 RS485或 RS2 3 2串行通讯与现场总线 L ON网之间的网桥设计 ,在设计中采用 80 3 1单片机实现网桥与PC控制主机之间的接口 ,采用 3 15 0神经元芯片实现网桥与 L ON网之间的接口。网桥设计的关键是使用双端口 RAM完成80 3 1与 3 15 0两个 CPU之间的数据通信 ,L ON/4 85 (2 3 2 )网桥在 L onworks现场总线控制系统中具有广泛的应用范围 ,可大大减少系统的设备成本。更多还原

【Abstract】 This paper deals with the design of net bridge which connects the LON network and the RS 485 serial communication interface or RS 232 serial communication interface. In the design, 8031 single chip microcomputer is used to fulfill the connection between net bridge and PC computer,and 3150 neuron chip is utilized to fulfill the connection between net bridge and LON.The key of this design is to use dual port RAM to achieve the data exchange between 8031CPU and 3150 neuron CPU. The net bridge between LON and RS485(RS232) can be widely applied in the Lonworks field bus control system,at the same time the net bridge can also reduce the equipment cost.更多还原