摘要
首先简要介绍了Modbus协议,并阐述了基于高性能单片机P89V51RD2的数字智能模块硬件结构和软件设计。最后,详细地描述了ModbusRTU协议从站的单片机程序实现。数字智能模块成功地应用于工业测控系统,其功能得到工程验证,说明设计合理。
Firstly, MODBUS protocol is described briefly. Then the digital and intelligent module based on the high performance P89V51RD2 series MCU is presented, including detailed hardware composition and software design. Lastly, how to design the slaves communication program in MCU under the circumstance of MODBUS RTU protocol is introduced in detail. The digital and intelligent module was applied successfully to the measuring and controlling system. The technical specification is fulfilled completely and the design of the module is reasonable.
出处
《机电工程技术》
2007年第5期38-40,58,共4页
Mechanical & Electrical Engineering Technology
