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Modbus
- Modbus通信协议说明：介绍了rs232和rs485总线是如何通讯的，很有必要下载的哦。
SP485R_zlgmcu.rar
- 广州周立功公司的SP485R的文档；RS485是为了弥补rs232的缺陷而设计的一种通信协议,Guangzhou week' s SP485R Ligong documents RS485 to rs232 to make up for deficiencies in the design of a communication protocol
ADC
- Timer，内部定时器，有Timer0、Timer1、Timer2等。 USART：Universal Synchronous Asynchronous Receiver Transmitter，同步/异步串行传输，如RS232、RS485等。 MSSP；Master Synchronous Serial Port，两线式(I2C)与三线式(SPI)标准同步串行传输协定，常用于EEPROM内存资料的烧录与读取，或是与其它集成电路沟通与联系，形成多芯片网络。 2. PIC16F8
RS485toPC
- 介绍了基于RS485实现的PC机与单片机串行通信控制系统．通过RS485／RS232信号转换电路，PC机根据下位机的地址不间断采集下位机的数据，-Introduced a PC-based implementation and RS485 Serial Communication control system. Through the RS485/RS232 signal converter circuit, PC machine according to the following addre
RS232RS485
- rs232转max485硬件实现的转换器-rs232 to rs485
serialtest
- Source code of Utility testing serial port (RS232, RS485) for embeding linux
RS232-RS485
- rs232-rs485的转换电路，已测试仿真好用，可以正确的收发数据-Rs232 and rs485 switching circuit has simulation test to use, can the right to send and receive data!!!!!!!!!!!!!!!!!!!!!!
RS232RS485
- RS232与RS485的转换资料，对采用计算机232口编程操控带485口的检测设备有绝佳帮助-RS232 and RS485 conversion information on the use of computer programming control testing equipment 232 with 485 has an excellent help
KTD-312-GE
- 最古老的GE公司模拟视频矩阵，RS232/RS422/RS485接口，欢迎喜欢的人下载-GE Matrix control protocol
tcpip
- 基于TCP/IP通讯的仪器仪表应用层协议架构由于新一代仪器仪表的数据量大，传输距离远，实时性高，传统的基于RS232/RS485的串行数据传送方式已不能满足要求，而基于TCP/IP的以太网数据通讯方式,传输距离大(通过internet，理论上无限远)，速度快，是当前新一代仪器仪表数据传输的理想方式。 基于单片机(如MCS51+RTL8019AS)的以太网接入技术已经相当成熟，可以方便的与PC机连接。根据仪器仪表嵌入式应用的要求（如实时性），我们采用TCP协议或UDP协议进行数据传输。TCP是
Modbus_over_serial_line_V1
- This document comprises a descr iption of Master / slave protocol and of the two different transmission modes ( RTU, ASCII). The main features of the physical layer ( RS485, RS232) and some recommendations are provided. Implementation classes