電表MODBUS智能協(xié)議轉(zhuǎn)換器

論文編號:DZXX398  論文字?jǐn)?shù):14450,頁數(shù):52

摘 要
 
 MODBUS規(guī)約是MODICOM公司開發(fā)的一個(gè)為很多廠商支持的開放規(guī)約。
 MODBUS協(xié)議是應(yīng)用于電子控制器上的一種通用語言。通過此協(xié)議，控制器相互之間、控制器經(jīng)由網(wǎng)絡(luò)（例如以太網(wǎng)）和其它設(shè)備之間可以通信。它已經(jīng)成為一通用工業(yè)標(biāo)準(zhǔn)。有了它，不同廠商生產(chǎn)的控制設(shè)備可以連成工業(yè)網(wǎng)絡(luò)，進(jìn)行集中監(jiān)控。
 此協(xié)議定義了一個(gè)控制器能認(rèn)識使用的消息結(jié)構(gòu),而不管它們是經(jīng)過何種網(wǎng)絡(luò)進(jìn)行通信的。它描述了控制器請求訪問其它設(shè)備的過程，如何回應(yīng)來自其它設(shè)備的請求，以及怎樣偵測錯誤并記錄,它制定了消息域格局和內(nèi)容的公共格式。
 MODBUS目前是工業(yè)領(lǐng)域全球最流行的協(xié)議之一，此協(xié)議支持傳統(tǒng)的帶RS-232、RS-422、RS-485和以太網(wǎng)接口的設(shè)備。許多工業(yè)設(shè)備，包括PLC、DCS、智能儀表等都在使用MODBUS協(xié)議作為它們之間的通訊標(biāo)準(zhǔn)。
 電表MODBUS智能協(xié)議轉(zhuǎn)換器是低成本智能通信接口協(xié)議轉(zhuǎn)換器、用于現(xiàn)場儀表及執(zhí)行器控制。嵌入式PROFIBUS接口OEM2（以下有時(shí)稱OEM2卡）專為自主開發(fā)具有PROFIBUS-DP通信功能產(chǎn)品的用戶，以O(shè)EM方式提供從站通信接口。
 
 
關(guān)鍵詞：MODBUS，協(xié)議轉(zhuǎn)換器，OEM2，PROFIBUS
ABSTRACT
 
 MODBUS Statute is a development of the company of MODICOM for many manufacturers to support the opening Statute.
 MODBUS agreement is applied to the electronic controller of a common language. Through this agreement between controller, the controller through the network (such as Ethernet), and other equipment between the communication. It has become a common industry standard. With it, the different manufacturers can even control equipment for industrial network for centralized monitoring.
 The agreement defines a controller can use the information to understand the structure, regardless of what they are after the communications network. It describes the controller request to visit other equipment process, if response from other equipment, and how to detect errors and records. It developed a pattern of information and content domain of public format.
 MODBUS industrial area is now the world's most popular one of the agreements. The agreement with the traditional support RS-232, RS-422, RS-485 and Ethernet interface equipment. Many industrial equipment including PLC, DCS, Intelligent Instrumentation in use so as Modbus communication between the standards.
 Intelligent meter MODBUS Protocol Converter is a low-cost intelligent communications interface protocol converters. Instrumentation for the scene and actuator control. Embedded PROFIBUS interface OEM2 (hereinafter sometimes referred to OEM2 Card) specifically for self-development with PROFIBUS communication products users, OEM to provide communication interface from the station.
 
Keyword: MODBUS，PROTOCOL COVERTER，OEM2，PROFIBUS
目錄

摘 要 I
ABSTRACT II
第1章 緒論 1
1.1 設(shè)計(jì)簡介 1
1.2 設(shè)計(jì)背景 1
第2章 MODBUS智能協(xié)議轉(zhuǎn)換器的設(shè)計(jì) 3
2.1 硬件設(shè)計(jì) 3
2.1.1 設(shè)計(jì)工具簡介 3
2.1.2 PROFIBUS-DP 從站開發(fā)OEM 解決方案 3
2.1.3 硬件原理圖及PCB圖 5
2.1.4 設(shè)計(jì)的產(chǎn)品 14
2.2 軟件設(shè)計(jì) 14
2.2.1 通信規(guī)約 14
2.2.2 接口板的初始化 15
2.2.3 數(shù)據(jù)交換 18
第3章 調(diào)試模式 24
3.1 嵌入式PROFIBUS接口OEM2 24
3.2 OEM2調(diào)試實(shí)驗(yàn)系統(tǒng)主要用途 24
3.3 調(diào)試實(shí)驗(yàn)系統(tǒng)調(diào)試模式 24
3.4 OEM2調(diào)試實(shí)驗(yàn)系統(tǒng)主要部件及選件 25
3.5 開發(fā)實(shí)驗(yàn)板 25
3.6 實(shí)驗(yàn)板CPU 26
第4章 建立調(diào)試實(shí)驗(yàn)系統(tǒng) 28
4.1 系統(tǒng)設(shè)備清單 28
4.2 系統(tǒng)結(jié)構(gòu)圖 29
4.3 安裝實(shí)驗(yàn)調(diào)試系統(tǒng) 29
第5章 總結(jié) 37
致謝 38
參考文獻(xiàn) 39
附錄 程序 40