摘要
针对工业控制领域的热点现场总线RS-485/Modbus,分析其典型的RTU通信模式报文协议,基于PIC微控制器与MAX487收发器设计具体的报文处理程序流程,所编写的系统程序通过了主机与多个从机之间的数据传输与显示测试,为Modbus现场总线系统的开发设计提供重要参考.
Aiming at the hotspot of field bus RS-485/Modbus in the domain of industrial control,it analyzes and studies its typical RTU mode of communication message protocol.Based on PIC micro controller and MAX487 transceiver,it designs a specific message processing procedures.The system program passes the data transmission and display test between the master and a number of slavers,and it provides an important reference for the development and design of Modbus field bus system.
出处
《襄樊学院学报》
2012年第2期17-20,45,共5页
Journal of Xiangfan University
