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Description: 此代码是用c开发的支持linux下的串口RS232,Rs485,Rs422modbus规约采集，然后通过网络UDP/IP发送采集的数据-this code is c linux support to the development of the RS232 serial port, Rs485, Rs422modbus Acquisition Statute, and then through the network UDP/IP to send data acquisition
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Size: 138240 |
Author: YangJie |
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Description: 通讯协议转换型RS485与RS232转换器的设计-communication protocol conversion type RS485 and RS232 converter design
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Size: 174080 |
Author: 郑卓 |
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Description: RS232转RS485电路原理图，值得一看.-RS232 to RS485 circuit schematics, worth a visit.
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Size: 20480 |
Author: 王允 |
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Description: 单片机RS232/RS485串行发送实验（双机通讯）。
实验步骤：
（1），准备两台598K实验机，确定1号机为发送，2号机为接收；
（2），当作RS232接口实验时，1号机和2号机的P3.0和P3.1交叉相连，且两机共地；
（3），当作RS485接口实验时，1号机和2号机的A、B作对应连接，同时1,2号机的R/TEN接P1.0, P3.0接R0, P3.1接DI。
（4），先运行2号机，键入[27]-->[EV]使2号机处于接收状态P。，后运行1号机[26]-->[EV]使1号机处于发送状态,P。会闪烁，在1号机键盘上按动数字键，在2号机的数码管上应显示对应的数字键值。-Send Singlechip RS232/RS485 serial experiment (two-plane communications). Experimental steps: (1), prepare two sets of experiments 598K machine, determined on the 1st machine to send, on the 2nd machine to receive (2), as a RS232 interface experiment, on the 1st and the 2nd machine and P3.0 P3.1 cross-linked, and the two planes were to (3), as a RS485 interface experiment, on the 1st and the 2nd machine A, B for the corresponding connection, while 1,2 No. of R/TEN then P1 .0, P3.0 access R0, P3.1 then DI. (4), first run on the 2nd machine, type [27]
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Size: 4096 |
Author: 李凯 |
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Description: 串口通讯编程实例,支持RS232-RS485通讯协议.-Serial Communication programming examples in support of RS232-RS485 communication protocol.
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Size: 46080 |
Author: roselu |
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Description: 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。-Modbus Communication Protocol Description: Introduction of the RS232 and RS485 communications bus is quite necessary to download Oh.
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Size: 156672 |
Author: 肖金星 |
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Description: 仿真标准串口，用于升级原串口外围设备，或者通过USB 增加额外串口。
● 计算机端Windows 操作系统下的串口应用程序完全兼容，无需修改。
● 硬件全双工串口，内置收发缓冲区，支持通讯波特率50bps～2Mbps。
● 支持5、6、7 或者8 个数据位，支持奇校验、偶校验、空白、标志以及无校验。
● 支持串口发送使能、串口接收就绪等传输速率控制信号和MODEM 联络信号。
异步串口/RS232/RS485/RS422
转换并口打印机为USB 打印机
EPP 并口和MEM 并口
常用的2 线和4 线同步串口
DD+
计算机
或者
其它
USB 主机
CH341
转接芯片
CH341 中文手册（一） ２
● 通过外加电平转换器件，提供RS232、RS485、RS422 等接口。
● 支持以标准的串口通讯方式间接地访问CH341 外挂的串行EEPROM 存储器。-err
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Size: 632832 |
Author: 张哲 |
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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.
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Size: 1908736 |
Author: 郑宏超 |
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Description: atmega32 和RS485的通讯，已经在电路板上测试通过，RS232相对简单一点，RS485需要对控制收发信号处理一下，并且需要RS232转RS485工具来验证收发是否正确-atmega32 and RS485 communication, has been tested in the circuit board, RS232 relatively simple point, RS485 transceiver control signals need to deal with you, and will need RS232 to RS485 transceiver tools to verify the correctness of
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Size: 18432 |
Author: nicai |
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Description: rs232转RS485,无源型，内包括PCB图 器件清单和焊接指导卡-RS232 to RS485, passive type, which includes a list of PCB Figure devices and welding guide card
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Size: 52224 |
Author: czla |
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Description: 这是一个关于单片机rs232转rs485接口的程序,含仿真文件-This is a single-chip RS232 to RS485 interface of the program, including simulation file
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Size: 90112 |
Author: 牛牛 |
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Description: pic18f4520使用uart做rs232或rs485與電腦pc做連線資料傳輸
內容簡單 從IC腳位設定到啟動UART功能與接收中斷和傳送資料-pic18f4520 use uart do rs232 or rs485 to do to connect with computer pc data transfer is simple and from the IC pin set to start the UART interrupt function and to receive and transmit data
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Size: 35840 |
Author: vincent |
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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
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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
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Size: 134144 |
Author: 刘晓生 |
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Description: AD 6 环境下的RS232转RS485电路原理图与pcb制版文件文件 串口取电-RS232 switch to RS485 circuit diagram and the finished document serial pcb to take power!
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Size: 877568 |
Author: 世事莫太贪 |
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Description: RS232 转TTL电平转rs485通讯接口原理图-铁匠设计-RS232 to TTL level communication interface switch rs485 schematic- Blacksmith Design
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Size: 34816 |
Author: 世事莫太贪 |
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Description: TI最新款单片机MSP430f5438，时钟频率可达25M，这是该单片机所有内部模块的源程序，包括时钟模块、IO模、定时器模块、看门狗模块、flash读写模块、SPI通讯、USB通讯、RS232通讯、RS485通讯、12位AD模块（四种模式）还有低功耗模式的源程序，注解清晰，便于理解。-TI' s latest single-chip MSP430f5438, the clock frequency of up to 25M, which is the source code module within the microcontroller, including the clock module, IO mode, the timer, watchdog modules, flash reader module, SPI communication, USB communication, RS232 communication, RS485 communication, 12 AD module (four models) as well as low-power mode of the source, comments clear, easy to understand.
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Size: 442368 |
Author: tom |
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Description: RS232转RS485应用，含原理图PCB图-RS232 to RS485 applications, including PCB schematic diagram
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Size: 237568 |
Author: Gavin Du |
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Description: circcuir for rs232 to rs485
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Size: 34816 |
Author: fela |
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Description: RS232，RS485是一个物理接口，简单的说是硬件。也可以说是一种通信接口。MODBUS是一种国际标准的通讯协议，用于不同厂商之间的设备交换数据（一般是工业用途）；所谓协议，也可以理解为有人说的“语言”吧，简单的说是软件(RS232, RS485 is a physical interface, in short, hardware. It can also be said to be a communication interface. MODBUS is an international standard communication protocol that is used to exchange data between different vendors (generally industrial uses); the so-called protocol can also be understood as a "language", simply said to be software.)
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Size: 4734976 |
Author: wangluo |
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