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Description: plc程序设计。PLC程序根据定义的通信协议识别其信息 内容。通过PC 的 COM1与S7-200 PLC的 RS一232端口的串行硬件连接，然后通过对 S7—200系列 PLC进行通信编程 ，就可实现与上位机通信 。
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Size: 86215 |
Author: 傅 |
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Description: nrf24l01无线232通信
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Size: 50128 |
Author: yywd4qq |
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Description: 测试232的源代码
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Size: 855 |
Author: zhaofeng221 |
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Description: 把单片机串口通讯改造为SPI通讯接口源程序
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Size: 3253 |
Author: hgc@163.com |
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Description: 2.1异步通信软件模拟2.2基于RS-232的串口通信2.3基于RS-485的多机通信2.4 I2C总线协议的软件实现2.5 SPI总线在单片机系统中的实现
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Size: 64242 |
Author: minglinet |
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Description: dfsdfd
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Size: 83008 |
Author: tonybbx |
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Description: vb中使用API的经典实例-vb use of the classic examples API
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Size: 165888 |
Author: 方恨少 |
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Description: 232串口测试程序。// 软件模拟测试说明:
// 1.这个测试采用查询方式进行串口通讯
// 2.将软件仿真环境的晶震设为11.0592 MHz
// 3.软件模拟全速运行, 观察波特率是1200bps
// 4.在串口1中输入数字或字母,可观察到通讯是否有误。-232 serial testing procedures.// Software simulation tests :// 1. The test inquiries conducted using serial communications// 2. Software simulation environment crystal Chun Set 11.0592 MHz// 3. Software simulation running full-speed, is 1200 Baud Rate Observer// 4. in a serial input numeric or alphanumeric, can be observed whether the communication error.
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Size: 19456 |
Author: 李天华 |
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Description: 一、 设计目的及所需设备：
了解PC机串行口的使用；所需设备为：PC机，RS232插座及连线；
二、串行口的有关硬件资料
1. 9芯RS－232C接口标准：
(1) 引脚1：CD，载体检测；
(2) 引脚2：RXD，接收数据；
(3) 引脚3：TXD，发送数据；
(4) 引脚4：DTR，终端准备好；
(5) 引脚5：信号地；
(6) 引脚6：DSR，MODEM准备好；
(7) 引脚7：RTS，请求发送；
(8) 引脚8：CTS，清除发送；
(9) 引脚9：RI，响铃指示；
-one, and designed the necessary equipment : Learn PC's serial port; Necessary equipment : PC, RS232 socket and connect; 2, the serial port hardware information 1. 9-RS-232C interface standards : (1) 1-2 1 : CD, carrier detection; (2) 1-2 2 : RXD, receiving data; (3) 1-2 3 : TXD. Send data; (4) 1-2 4 : DTR, terminal ready; (5) 1-2 5 : signal; (6) 1-2 6 : DSR, MODEM ready; (7) 1-2 7 : RTS, a request; (8) 1-2 8 : CTS, Send removals; (9) 1-2 9 : RI, ringing instructions;
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Size: 27648 |
Author: 与非门 |
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Description: < 计算机接口与通信>>的课程设计,设计任务：
1、用RS－232C的零MODEM的连接法连好两机的连线；
2、编一程序，将一台机的键盘输入的键值通过RS－232C口送到另一台机上；
3、编一程序，通过RS－232C口进行一台机到另一台机的文件复制。
-<Computer Interface and Communication>> the curriculum design, the design of tasks: 1, using RS-232C connection zero MODEM good law even connect the two machines 2, made of a procedure will be a machine keyboard keys through the RS-232C port to another machine 3, made of a procedure, through the RS-232C port for a machine to another machine to copy documents.
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Size: 493568 |
Author: 胡海洪 |
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Description: Spartan 3 Digilent Demo:This demo drives the perphrials on the Spartan 3 board. This drives a simple pattern to the VGA port, connects the switches to the LEDs, buttons to each anode of the seven segment decoder. The seven segment decoder has a simple counter running on it, and when SW0 is in the up position the seven segment decoder will display scan codes from the PS2 port. This demo how ever does not drive the RS-232 port or the memory. This is a simple design done entirely VHDL not microblaze.
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Size: 731136 |
Author: Roy Hsu |
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Description: Learn to do more important things phones generally against MTK platform, it is necessary to quickly download ah
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Size: 709632 |
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Description: 单片机和PC机的串行通信一般采用RS-232、RS-422或B3-485总线标准接口，也有采用非标准的20nnJL电流环的。为保证通信的可靠，在选择接口时必须注意：(1)通信的速率；(2)通信距离：(3)抗干扰能力；(4)组网方式。本文主要介绍采用RS-232接口与单片机通信的方法-MCU and PC machines generally use serial communication RS-232, RS-422 or the B3-485 standard interface bus, also have the use of non-standard current loop 20nnJL. To ensure reliable communications, the choice of interface is important to note: (1) communication rate (2) Communication distance: (3) anti-jamming capability (4)组网方式. This paper mainly introduces the use of RS-232 communication interface with the single-chip approach
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Size: 43008 |
Author: 蒋硼 |
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Description: 1．用RS－232的零MODEM的连接法连好两机的连线；
2．用DOS的MODE命令设置好两机的通讯格式，两机的通讯格式必须一致。
3．用DEBUG的0命令将一数发送到串行口(2F8H-3F8H)，然后在另一台机上用I命令读入串行口的内容。如果发送的内容与接收的内容一致，说明两机已连好线，否则必须检查连线，直到两机可通讯为止；
4．编一程序，将一台机的键盘输入的键值通过RS-232C口送到另一台机，并在CRT上显示键值；
5．编一程序，通过RS-232C口进行一台机到另一台机的文件复制。
-1. With RS-232 zero-MODEM connection method even better connect the two machines 2. Use DOS
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Size: 710656 |
Author: 业 |
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Description: 第2章 数据抽象 22
2.1 声明与定义 22
2.2 一个袖珍C库 23
2.3 放在一起：项目创建工具 29
2.4 什么是非正常 29
2.5 基本对象 30
2.6 什么是对象 34
2.7 抽象数据类型 35
2.8 对象细节 35
2.9 头文件形式 36
2.10 嵌套结构 37
2.11 小结 41
2.12 练习 41-Chapter 2 Data and the definition of an abstract statement 222.1 a 222.2 pocket C library together 232.3: 292.4 What is the project to create tools for non-normal 292.5 What is the basic object 302.6 Object 342.7 abstract data types 352.8 object 352.9 document details 362.10 nested structure 372.11 412.12 Summary of practice 41
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Size: 549888 |
Author: lanpiao |
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Description: plc程序设计。PLC程序根据定义的通信协议识别其信息 内容。通过PC 的 COM1与S7-200 PLC的 RS一232端口的串行硬件连接，然后通过对 S7—200系列 PLC进行通信编程 ，就可实现与上位机通信 。-plc programming. PLC program in accordance with the definition of communication protocols to identify its information content. Through the PC s COM1 and S7-200 PLC s RS 1 232 serial port hardware connection, and then through the S7-200 series PLC to communicate programming, you can achieve with the host computer communications.
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Size: 86016 |
Author: 傅 |
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Description: 串口通信编程大全 电子书66页
1. RS-232-C详解
2. 串口通信基本接线方法
3. 串口通讯的概念及接口电路
4. 有关RS232和RS485接口的问答
5. 同步通信方式
6. 通信协
7. 实战串行通
8. 全双工和半双工方式
9. 浅析PC机串口通讯流控制
10. 奇偶校验
-EBook Encyclopedia of Serial Communication Programming 66 1. RS-232-C Detailed 2. Serial Communication basic wiring methods 3. The concept of serial communication and interface circuit 4. On the RS232 and RS485 interface of the Q
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Size: 907264 |
Author: 自治州 |
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Description: usb 转rs232驱动程序，HL-232-340,cp2101drivers-usb to rs232 driver, HL-232-340, cp2101drivers
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Size: 2983936 |
Author: 022106105 |
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Description: 一个不错的usb_232驱动程序，可以解决您本本无串口的困扰-Usb_232 a good driver, you can solve your non-serial books plagued
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Size: 243712 |
Author: 李岩 |
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Description: Visual Basic and RS-232基础知识3-Visual Basic and RS-232 Basics 3
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Size: 14538752 |
Author: 罗国华 |
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