摘要
在变频调速系统中,为实现变频器与上位机的远距离通信,通常采用串行通信方式。在详细分析了串行数据接口标准(RS-232、RS-485)的基础上,设计了上位机RS-232到RS-485的转换电路,并给出了基于TMS320LF2407A的变频器和上位机进行远距离串行通信的硬件接口电路、通信协议及软件设计方法,给出了上位机与下位机串行通信接口程序的初始化代码,同时阐述了如何通过VC++6．0中MSComm控件编写上位机串行通信程序。
In variable frequency regulating speed system, serial communication is widely used for telecommunication between inverter and host computer. The hardware interface design, communication protocol and software design of asynchronous serial communication between inverter based on the TMS320LF2407A and host computer was proposed in this paper. Then the initialization coding of DSP-SCI and how to realize asynchronous serial communication by MSComm in VC＋＋6.0 was presented.
出处
《深圳信息职业技术学院学报》
2006年第2期21-25,共5页
Journal of Shenzhen Institute of Information Technology
基金
深圳信息职业技术学院科研资助项目(LG-040614)
