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Description: ModBus通讯协议分为RTU协议和ASCII协议，我公司的多种仪表都采用ModBus RTU通讯协议，如：YD2000智能电力监测仪、巡检表、数显表、光柱数显表等。下面就ModBus RTU协议简要介绍如下：
一、通讯协议
ModBus通讯协议分为RTU协议和ASCII协议，我公司的多种仪表都采用ModBus RTU通讯协议，如：YD2000智能电力监测仪、巡检表、数显表、光柱数显表等。下面就ModBus RTU协议简要介绍如下：
一、通讯协议-ModBus RTU communication protocol into ASCII protocols and agreements, the company used a variety of instruments ModBus RTU communication protocol, such as : YD2000 intelligent power monitoring device, Inspection Table, several distinct forms Bargraph few significant and so on. Now, ModBus RTU briefed the agreement are as follows : 1. communication protocol ModBus RTU communication protocol into ASCII protocols and agreements, the company used a variety of instruments ModBus RTU communication protocol, such as : YD2000 intelligent power monitoring device, Inspection Table, several distinct forms Bargraph few significant and so on. Now, ModBus RTU briefed the agreement are as follows : a communications agreement
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Size: 149756 |
Author: 莉莉 |
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Description: 基于winsock的ftp客户端程序，实现用户登陆，获取服务文件列表，上传下载文件-protocols of the ftp client, enabling user landing, access documents list uploading and downloading files
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Size: 48557 |
Author: 胡军 |
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Description: 电子时钟，用到I2C通信协议，LCD显示，五向按键-electronic clock, use I2C communication protocols, LCD display, five keys to the
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Size: 104860 |
Author: 李瑞峰 |
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Description: 网站教程 下载天空|免费下载
WAP技术和开... 24 · MIDP1.0-五... ...掌握中国(wap.zhangwo.cn)天气源程序 09-08 3 · WAP中文提交乱码...实现点击图片连接时选择直接打开或下载 07-21...
www.sky-cn.net/mobilewap/wz/WAPjc/webjc/ 48K 2006-1-1 - 百度快照
www.sky-cn.net 上的更多结果
天堂鸟技术学院-技术版BBS
WAP技术论坛有关WAP相关的技术、协议,算法、编程技巧和源程序 60 标题: wap_push(代码资料交... 作者: 时间...CMPP3.0协议源码下载(......
-sky download site Directory | free download WAP technology and open ... 24 MIDP-5. ... .. grasp China (wap.zhangwo.cn) 09-08 3 weather source WAP Chinese gibberish ... to achieve Click on the picture to choose direct connection to open or download www.s 07-21 ... ky-cn.net/mobilewap/wz/WAPjc/webjc / 20 48K 06-1-1 - Baidu snapshot www.sky - cn.net more on the results of Paradise Bird Institute of Technology-Technology BBS version of the WAP Forum on WAP technology-related technologies, protocols, algorithms, programming techniques and source 60 Title : wap_push (code reference information ... Author : time ... CMPP3.0 agreement source download (
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Size: 480068 |
Author: 张三 |
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Description: 电子邮件传递可以由多种协议来实现。目前，在Internet 网上最流行的三种电子邮件协议是SMTP、POP3 和 IMAP，-can send e-mail from multiple protocols is to be achieved. Currently, the Internet's most popular e-mail agreement is three SMTP, POP3 and IMAP.
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Size: 8266 |
Author: 郑描中 |
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Description: 通过winsock向特定网络地址提交数据。模拟登陆过程。
其中。HTTP报文可以通过WinSockExpert抓包来获取。-through the protocols of a specific network address to submit data. Simulated landing process. Which. HTTP message through WinSockExpert capturing Packet to obtain.
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Size: 7206 |
Author: 林松英 |
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Description: ITU h.323标准协议详解（中文资料），阅读密码21315038-ITU H.323 standard protocols Elaborates on (bilingual), read password 21315038
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Size: 1393566 |
Author: 王振华 |
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Description: H.263标准协议的编码算法的源程序，适用于搞机器人远程监控或多媒体视频传输的用户。
-H.263 standard protocols of the source coding algorithm, applicable to engage in robot remote monitoring or multimedia video transmission users.
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Size: 112711 |
Author: 刘伟 |
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Description: mmc卡规范，包括通信接口及协议，结构定义，触点定义等--3.4 card specifications, including communication interfaces and protocols, structure definition, definition of contact
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Size: 211385 |
Author: 赵乾 |
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Description: 青岛市城市远程集超系统中的手持器程序，用的是KEIL C7.0，用了北京天石的操作系统，是一个典型的嵌入式POS的程序，包含了常见手持器的基本功能，如用了红外1。1版本的通信协议，接触，射频卡读写等。-Qingdao City Remote Set-system handheld device procedures, it was KEIL C7.0, with the Beijing-day rock of the operating system, is a typical embedded POS procedures, including the common handheld device's basic functions, such as using an infrared. A version of the communication protocols, contacts , RF card reader so.
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Size: 7638 |
Author: 毛建荣 |
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Description: winsock是在windows平台下重要的通讯方式。-protocols of the windows platform important means of communication.
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Size: 249375 |
Author: 动发 |
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Description: 这是一个PC机与GPS机之间的串口通信程序，内含具体的通信协议，并与数据库相连接。-This is a PC and GPS for the serial communication program containing specific communication protocols, and connect with the database.
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Size: 154330 |
Author: anne |
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Description: Unix下用C语言进行网络编程的范例，包括TCP、UDP等协议的应用等。-Unix using C language network programming paradigm, including TCP, UDP protocols in the application.
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Size: 66673 |
Author: zlq |
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Description: 机器人通讯协议，用于激光切割系统的通信协议以及实现方法，其中涉及到实时多任务系统VRTXsa.串口通信控件编制-robot communications protocols, laser cutting system for the communication protocol and method, which relates to real-time multi-task system VRTXsa. Serial Communication Control preparation
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Size: 5417 |
Author: 刘磊 |
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Description: VC++6.0 winsock
基于TCP的网络聊天程序
绝对可以运行，作为对网站的奉献-VC 6.0 protocols of the network based on TCP chat program can definitely run, as the dedication of the site
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Size: 136803 |
Author: king |
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Description: canopen 通信协议，硬件通信，有要求的人可以下载，将得挺多，有些是英文的-Canopen communication protocols and hardware communication, the person can be downloaded, quite, some are in English
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Size: 7470966 |
Author: 王海 |
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Description: c# winsock 编程,是对winsock的封装，增加了事件编程。-c # programming is the protocols of the package, an increase of events programming.
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Size: 259556 |
Author: wuxc |
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Description: 自动零售系统的MDB总线资料，包括协议、硬件结构、例程。-automated retail systems MDB bus information, including protocols, hardware structure, routine.
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Size: 3610746 |
Author: 姜小龙 |
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Description: JavaMail开发手册.pdf 英文教材
1. Tutorial tips 2
2. Introducing the JavaMail API 3
3. Reviewing related protocols 4
4. Installing JavaMail 6
5. Reviewing the core classes 8
6. Using the JavaMail API 13
7. Searching with SearchTerm 21
8. Exercises 22
9. Wrapup 32-JavaMail Development Manual. Pdf an English textbook. Tutorial tips 2 2 . Introducing the JavaMail API 3. Reviewing re lated protocols 4. Installing JavaMail 6 5. Re viewing the core classes 6. Using the JavaMail API 13 7. Searching with SearchTerm 21 8. Exerci ses 22 9. Wrapup 32
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Size: 55509 |
Author: 赵宁 |
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Description: 该程序在 Windows 2000 Pro+SP4 下编译调试通过(Visual C++ 6.0 IDE环境)。
需要Winsock2支持。
1.该程序采用了winsock的原始套接字编程，实现了基本的Ping功能，使用方法:ping host,默认连续发送4个回显请求。
2.该程序中对ICMP首部的定义采用了非标准形式。即将选项数据中保存时间戳的头4个字节也定义为ICMP首部的一部分，这样ICMP首部就被定义为12个字节。这样主要做主要是为了编程的实现与理解上的方便。
3.根据习惯ICMP首部的标示符字段填充了进程ID。
4.该程序实现了在IP首部记录路由的RR功能，最多记录9个地址。
要实现的功能参数：
1.n 参数 设定发送回显请求的数量
2.l 参数 设定选项数据的填充字节数
3.t 参数 持续的发送回显请求，直到用户按下Control-C停止
4 w 参数 设定接收超时的时间，以毫秒为单位
参数的具体说明可以参考windows自带的ping程序-the program in Windows 2000 SP4 Pro compiler under through debugging (Visual C 6.0 IDE environment). Winsock2 need support. 1. The procedure adopted protocols of the original socket programming, the basic implementation of Ping function, Use : ping host, the default four consecutive send the request back significantly. 2. The procedure for the first ICMP using the definition of non-standard forms. Upcoming options to preserve the timestamp data for the first four bytes are defined as ICMP first part, the first such ICMP was defined as 12 bytes. This is done primarily to the realization of programming and understanding for it. 3. Under customary ICMP first marker Address field filled with the process ID. 4. The program achieved in the first record of IP routing RR functions, the most record
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Size: 14481 |
Author: 赵锐 |
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