Windows98下利用VC++5.0控制多台变频器

Control of Multi Inverters by Using VC++5.0 Under Windows98

介绍了西门子MicroMaster变频器的RS - 485通信协议 ,讨论了MSDOS、16位Windows和Windows98的通信编程差别 ,然后着重阐述了 32位Windows环境下的通信编程技术 。

This paper introduces the RS485 communication protocols of the Siemens MicroMaster inverter,and discusses the differences of communication programming in the operating systems of MSDOS,16bits windows and windows98,then explaines some problems about serial communication programming technique in 32bits Win98.Finally,this techinque is used to complete serial communication controlling between single PC and multi inverters under windows98.