Description: 目前在工业控制领域,单片机系统主要通过RS232、RS485和CAN总线协议通信,它们无法直接与互联网连接,因此该系统处于与互联网隔绝的状态。这些系统广泛采用低成本8位单片机,而这种单片机一般只具有RS232异步串行通信接口,要接入到互联网必须进行通信接口改造,这种改造不仅是接口的物理改造,更关键是数据格式的改造和通信协议的转换。本文提出一种RS232串行通信接口与RJ45以太网接口转换器的设计方案,已有的单片机系统可以通过该转换器接入到以太网,进一步接入互联网。-Currently in the field of industrial control, single-chip microcomputer system mainly through RS232, RS485 and CAN bus protocol communications, they can not be directly connected to the Internet, so the system is in a state of isolation and the Internet. These systems are widely used in low-cost 8-bit MCU, which generally has a single-chip RS232 asynchronous serial communication interface, to access to the Internet must be communication interface transformation, such transformation is not only the physical interface transformation, more crucial is the transformation of data format and communication protocol conversion. In this paper, a RS232 serial communication interface with RJ45 Ethernet interface converter design, the existing single-chip microcomputer system via the access to Ethernet converter, and further access to the Internet. Platform: |
Size: 1908736 |
Author:郑宏超 |
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Description: 自己设计的pic单片机开发板源程序和说明书（内有原理图）支持pic16系列28脚和40脚器件。串口输出信息。4个LED数码管驱动；4个LED驱动；4个按键驱动；1个RS232接口；1个RS485接口；板载IIC存储器24C02驱动，；实时时钟；1Wire温度传感器；4通道功率输出驱动；2个继电器驱动；1个蜂鸣器； 2个通道AD转换（使用1个）； 红外收发（保留）； 扩展I/O接口； 按键复位电路； 板载ICSP接口。通过ICD2可在线编程，调试；复用IO均采用拨动开关控制。
-Of their own design Singlechip pic development board and a detailed description of the source program (with schematics) to support the PIC16 family of 28 feet and 40-pin devices. Serial output. 4 LED digital tube driven 4 LED driver four key drivers an RS232 interface an RS485 interface IIC onboard memory 24C02 driven real-time clock 1Wire temperature sensor 4-channel power output driver 2 relay driver a buzzer 2-channel AD converter (using an) infrared transceiver (reservations) expansion of I/O interface button reset circuit onboard ICSP interface. Available online through the ICD2 programming, debugging multiplexing IO using DIP switch control. Platform: |
Size: 2499584 |
Author:chenmao |
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Description: DIY多功能转换器（已调试通过）。
本原理图可以实现USB/RS232、USB/RS422、USB/RS485接口转换功能。只需安装USB驱动程序即可实现USB转串口的功能，简单方便。另外只需对电路图稍作改动即可实现RS232/RS422或RS232/RS485转换功能。
心动了吗？不如赶快行动，拥有属于自己的五合一的接口转换器吧！-DIY Multi-function Converter (has debug through). The schematic diagram can be achieved USB/RS232, USB/RS422, USB/RS485 interface conversion. Simply install the USB driver can achieve the function of USB to serial, easy and convenient. Also just to make a minor amendment to the circuit can be realized RS232/RS422 or RS232/RS485 conversion. Echocardiography it? Action as soon as possible, with their own-one interface converter吧! Platform: |
Size: 167936 |
Author:laochao |
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Description: 工程名称：串口+485发送程序
控 制 器： ATmega16
晶 振： 8.0000Mhz
创建时间：2009年2月18日
说 明：CPU通过串口接RS485发送数据，终端PC机通过
RS485转RS232转换器接入PC机，使用串口调试
助手发送数据并接收数据。
端口配置：
CPU RS485
RXD RO
TXD DI
PD6 DE,/RE-Project Name: serial port+485 sending program controller: ATmega16 Crystal: 8.0000Mhz Created: February 18, 2009 Description: CPU to send data through the RS485 serial port access, terminal PC, transferred via RS485 Converter RS232 access to PC machine, use the serial port debug helper to send data and receive data. Port configuration: CPU RS485 RXD RO TXD DI PD6 DE,/RE Platform: |
Size: 1024 |
Author:liujianhu |
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Description: 这是基于VC的实现USB到RS232或是RS485总线的协议转换器的应用程序代码。-This is based on VC implementation of USB to RS232 or RS485 bus protocol converter application code. Platform: |
Size: 798720 |
Author:居锦武 |
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Description: 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 address slave slave under continuous collection of data Platform: |
Size: 177152 |
Author:张仪 |
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Description: The Document Gives the basic idea about RS485 communication with the PC. It shows basic hardware arrangement of Rs-232 to 485 converter Platform: |
Size: 586752 |
Author:Chetan Shah |
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Description: 485H接口转换器是RS232至RS485转换器，可将发送数据TD和接收数据RD转换成差分半双工RS485信号，使RS232信号传输距离大大加长，是远距离点到多点通信的最佳选择。本转换器无需外接电源，自用串口转换电源；亦无需RTS信号控发，保证软件的广泛适应性-485H interface converter RS232 to RS485 converter is, can send data and receive data RD TD into a half-duplex RS485 differential signal to RS232 signal transmission distance significantly longer, is the best choice for long-range multipoint communication. The switch eliminates need for external power supply, power supply for personal use serial conversion also do not need to send RTS signal is controlled to ensure that a wide range of adaptive software Platform: |
Size: 134144 |
Author:刘晓生 |
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Description: AUTOMATIC DRIVE OPTO-ISOLATED RS232-RS485
The circuit presented here makes a converter
bidirectional able to transform a transmission
full-duplex asynchronous serial RS232 transmission
asynchronous serial half-duplex RS485 Platform: |
Size: 1035264 |
Author:tony hoang |
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Description: AUTOMATIC DRIVE OPTO-ISOLATED RS232-RS485
The circuit presented here makes a converter
bidirectional able to transform a transmission
full-duplex asynchronous serial RS232 transmission
asynchronous serial half-duplex RS485 Platform: |
Size: 117760 |
Author:tony hoang |
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Description: RS232转rs485串口与变频器控制上位机软件，能够选择当前串口，实现变频器的读、写，运行、停机等操作-RS232 to rs485 serial port with the frequency converter control PC software, be able to select the serial port, the realization of frequency converter to read, write, run, stop operation, etc Platform: |
Size: 4506624 |
Author:醚 |
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Description: 通过对计算机的USB口或RJ45网口加装相应的多串口卡转换器等方式，扩展不少于16个 RS232或RS485串口，模拟现场数量众多的动力设备，实现动力设备与被测试SU通信协议的交互，作为SU测试时的动力设备数据源。
1） 扩展仿真为RS485接口时，该RS485接口应能实现不少于3个地址的串行总线仿真；
2） 模拟动力设备数量最多为16个RS485串行总线、48个RS485接口的设备；
3） 仿真软件内置协议数量应不少于200个动力设备；(Through to the computer USB port or RJ45 port with the corresponding serial card converter, expansion of not less than 16 RS232 or RS485 serial port, a large number of power equipment simulation field, realize the power equipment of the communication protocol of SU and tested interaction, as the data source of power equipment SU when testing.
1) when the extended simulation is the RS485 interface, the RS485 interface should be able to implement the serial bus simulation with no less than 3 addresses.
2) the number of analog power equipment is 16 RS485 serial bus and 48 RS485 interface devices.
3) the number of built-in protocols in the simulation software should not be less than 200 power devices;) Platform: |
Size: 25468928 |
Author:米洛
|
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