485通讯程序

合众达提供的两个驱动，可以添加自己的算法。一个是串口的，一个是实时系统的。(America to the two drivers, they can add their own algorithms. 1 serial port, a real-time system.)

说明：  用数据库实现串口通讯的源代码，功能比较强大，值得一看。(database using serial communication source code, functions more powerful overseas.)

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.)

串口调试助手VB.zip 我想大家都用过 串口调试助手， 也都期望自己能够制作出同样的通信界面； 那么这里的工具，让你如愿…… 采用VB编程，超级简单实用。(Serial debugging assistant VB.zip I would like that we have used serial debugging assistant, also expect to be able to produce the same communication interface where the tool that allows you to do so ... using VB programming, super simple and practical.)

使用python+Qt+Matplot实现串口工具(a com tool base python + qt + matplot)

一个外国人写的rs485串口通信程序，有原理图和源代码，全面实现了485协议(a foreigner writing RS485 serial communication procedures, schematic and source code, the full realization of the 485 agreement)

串口助手 基于python3 的 tkinter 编写界面(serial port assistant)

说明：  西门子840D入门手册，中文版，图片说明(Siemens 840D manual entry, the Chinese version, Photo caption)

清除串口冗余。当下位机偶然有乱码出现时，在新的通讯开始先清除缓冲区冗余信号，然后开始通讯，可以保证通讯更稳健(Clear serial redundancy. Current-bit machines have occasionally garbled when, in the new communications start to clear the buffer zone redundant signal, and then began to communications, to ensure more robust communication)

VC实现和S7-200PLC的串口通信程序,很有价值哦(VC and S7-200PLC Serial Communication Program and of great value oh)