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modbusRTU Communications with RS485

用vc写的向串口发十六进制数据。 文件中有整个工程文件。(Vc wrote with hex data sent to the serial port. File in the project file.)

485多机通讯的连接方式，主要有总线方式、星形方式等(connection of multi pc communication with 485)

CVI环境下的串口调试助手，主要功能有即时收发信息，显示波形，截图和保存数据(CVI environment serial debugging assistant, the main function includes immediately send and receive information to display waveforms, capture and save data)

一个非常完整的川口通讯源程序，我费了很大功夫才把他找到。(a very complete source Kawaguchi communications, I spent a lot of time and energy only to find him.)

串口通讯的一个类，已经在用，分享给大家。(serial port communication file.)

vb 串口上位机 很简单的一个版本，大家自己扩展功能吧 (com executed on pc,it s a simple version ,easy for expansion)

说明：  51单片机串口通讯软件与上位机通讯 含有多个程序(this is a programe to serils community to 51 and pc.)

VB和信捷PLC通讯的源代码，包括读写，置位，独一无二哦，网上都找不到的。(vb and thinget plc communication program source,good thing)

说明：  非常好用的串口变成工具和源代码，可以自动搜索串口，有非常高的参考价值。(it is very nice! you can use it easyly, it is Visul C++ code .)