Modbus协议最初由 Modicon 公司开发出来，在 1979 年末该公司成为施耐德自动化
(Schneider Automation) 部门的一部分，现在 Modbus已经是工业领域全球最流行
的协议。此协议支持传统的 RS-232、RS-422、RS-485和以太网设备。许多工业设
备，包括 PLC，DCS，智能仪表等都在使用 Modbus协议作为他们之间的通讯标准。
有了它，不同厂商生产的控制设备可以连成工业网络，进行集中监控。
Modbus protocol originally developed by the Modicon company, at the end of 1979 the company became schneider automation
(Schneider Automation) sector, as part of the Modbus is now industrial areas of the world's most popular
The agreement. This protocol supports the traditional RS - 232, RS - 422, RS - 485 and Ethernet device. Many industrial set
Prepare, including PLC, DCS, intelligent instrument and so on are using the Modbus protocol as the standard of the communication between them.
With that, the control equipment of different manufacturers can connect industrial network, centralized monitoring. (2020-06-14, C/C++, 232KB, 下载0次)
利用周立功的设备进行以太网和串口通讯的各种语言的例程
Routines of various languages for Ethernet and serial communication using Zhou Ligong's equipment (2019-01-07, C/C++, 17672KB, 下载0次)
物理网管理，基于esp8266芯片开发的管理平台
Physical network management (2018-08-31, C/C++, 7417KB, 下载1次)
介绍以太网采集数据的原理机系统实现方法,本系统利用w3100实现协议 (2018-04-20, C/C++, 332KB, 下载1次)
http://www.pudn.com/Download/item/id/1524217708875745.html
STM32 cortex-m3 单片机485串口通信程序 编辑软件IAR
STM32 cortex-m3 microcontroller 485 IAR serial communication program editing software (2011-05-11, C/C++, 389KB, 下载279次)
PTC08串口摄像头模块应用资料,内容详细，是我买模块的光盘资料
PTC08 serial camera module application information and detailed, I bought the CD data module (2010-12-29, C/C++, 996KB, 下载170次)
lpc2478 以太网程序，能够通过串口调试工具观察接收到的数据
lpc2478 ethernet program debugging tools through the serial port receives data observed (2010-10-09, C/C++, 123KB, 下载28次)
4串口的芯片中文资料,很难找的中文版的,通过总线来扩展4个串口,
4 serial chip Chinese data, it is difficult to find the Chinese version, by bus to expand the four serial ports, (2010-06-01, C/C++, 731KB, 下载57次)
RS232异步串行接口转以太网接口C语言程序源码
RS232 asynchronous serial interface to Ethernet interface C language source program (2009-03-23, C/C++, 143KB, 下载8次)
powerpc8250的u-boot移植，网口用的是FCC2，串口用的是ttyCPM
powerpc8250 transplantation of u-boot, the net mouth is FCC2, serial port using ttyCPM (2007-12-04, C/C++, 9590KB, 下载14次)
Z-TEK(力特)USB转串口线驱动(Linux和Windows版本,并附驱动下载网址)
Z-Pt (special forces) USB to Serial Line Driver (Linux and Windows versions, Drivers accompanied download site) (2007-05-06, C/C++, 6766KB, 下载2881次)