【正文】 DPMI）：中央可編程控制器，如PLC,PC等?！糁С謫沃骰蚨嘀飨到y(tǒng)?！?。◆每個(gè)DP從站最大為246字節(jié)的輸入和輸出數(shù)據(jù)?！敉ㄟ^(guò)總線為DP從站賦予地址?！魪?qiáng)大的診斷功能，三級(jí)診斷信息。 輸煤系統(tǒng)網(wǎng)絡(luò)拓?fù)鋱D 3 ProfibusDP協(xié)議 ProfibusDP的基本功能1　 功能◆DP主站和DP從站間的循環(huán)用戶數(shù)據(jù)傳送。以主控制器S73152DP作為主站，通過(guò)以太網(wǎng)變換機(jī)ESM連接到安裝有以太網(wǎng) C P1613的工控機(jī)上。為此選用ProfibusDP現(xiàn)場(chǎng)總線來(lái)組成網(wǎng)絡(luò)。系統(tǒng)運(yùn)行要求是按順煤流方向是正常順序停機(jī)、按逆煤流方向是正常順序啟動(dòng)，而事故跳閘時(shí)是從設(shè)備故障點(diǎn)及其上游的設(shè)備瞬時(shí)停機(jī)，而且故障點(diǎn)下游設(shè)備保持原來(lái)的工作狀態(tài)不變。卸煤系統(tǒng)是由汽車(chē)衡、翻車(chē)機(jī)或入廠煤采樣裝置等組成的，其設(shè)備控制方式是由制造的廠方設(shè)計(jì)并成套供貨。下面介紹第一部分的內(nèi)容， 生產(chǎn)過(guò)程的工藝流程圖 從輸煤工藝聯(lián)鎖流程圖分析得知，在控制系統(tǒng)程序組態(tài)時(shí)應(yīng)嚴(yán)格按照該流程進(jìn)行沒(méi)計(jì)及組態(tài)，以確保與設(shè)備和人身安全有關(guān)的控制程序的編程，亦須在遵循系統(tǒng)聯(lián)鎖的原則下靈活組臺(tái)。雖然一二期僅涉及煤場(chǎng)至人爐煤斗之間的輸煤控制系統(tǒng)設(shè)備改造．但為了安全可靠地實(shí)現(xiàn)改造．又不影響所有機(jī)組的正常運(yùn)行，因此將該項(xiàng)目分兩步進(jìn)行。2 輸煤段工藝及控制要求 各工藝段所包含的設(shè)備由輸煤皮帶機(jī)、葉輪給煤機(jī)、往復(fù)式給煤機(jī)、碎煤機(jī)，滾軸篩帶式除鐵器、圓盤(pán)除鐵器、精細(xì)除鐵器、犁煤器、切換擋板拉繩開(kāi)關(guān)和跑偏開(kāi)關(guān)等組成，其他如撕裂打滑、堵煤等保護(hù)開(kāi)關(guān)均不進(jìn)本控制系統(tǒng)。目前國(guó)內(nèi)外現(xiàn)場(chǎng)總線技術(shù)的應(yīng)用，可分為兩類，一種是DCS 遠(yuǎn)程 I/O 通訊采用現(xiàn)場(chǎng)總線標(biāo)準(zhǔn)的協(xié)議技術(shù)的應(yīng)用，國(guó)內(nèi)工程已經(jīng)有經(jīng)驗(yàn)；第二種是現(xiàn)場(chǎng)總線技術(shù)標(biāo)準(zhǔn)的智能現(xiàn)場(chǎng)設(shè)備中植入具有控制器功能的控制模塊，并且以符合某種現(xiàn)場(chǎng)總線協(xié)議標(biāo)準(zhǔn)的通訊方式與DCS 相聯(lián)接的現(xiàn)場(chǎng)總線控制系統(tǒng)。s first open field bus standard, its application field covers from mechanical processing, process control, electric power, traffic to building automation fields. PROFIBUSDP is an optimized module, have higher data transfer rate, applied to the munication between system and external equipment, especially suitable for the remote I/O system. It allows high speed periodic small batch data munication, suitable for high automation demands on time. This design is the application of Siemens field bus in power plant coal conveying system, power plant coal conveying system is the important process of the electric power production in power plants. Thermal power plant coal conveying system of process equipment layout is highly decentralized, single furnace boiler problem of accurate measurement of single grinding of coal has been affect the cost of power generation is equilibrium statistical problems, especially coal calorific value and statistical calculation of boiler bustion efficiency is still unable to solve intractable problems. And field bus technology for highly decentralized, electromagnetic interference, big equipment has its unique advantages, thus conveying system can be used with the DCS remote I / 0 bus mode of intelligent munication module bus pattern with the bination of control mode, advanced technology, improve the level of the coal conveying control system. This design for the project in two steps, first coal conveying control system renovation, and then the soft measurement of the coal and coal into the furnace. In order to ultimately achieve instantaneous single furnace fuel metering and dynamic production cost accounting purpose.Keywords Coal handling system,PCS,ProfibusDP目 錄摘 要 IABSTRACT II1 緒論 22 輸煤段工藝及控制要求 3 3 3 4 4 53 ProfibusDP協(xié)議 6 ProfibusDP的基本功能 6 ProfibusDP的通信原理 8 電子設(shè)備數(shù)據(jù)文件(GSD) 8 ProfibusDP的技術(shù)優(yōu)勢(shì) 94 系統(tǒng)的網(wǎng)絡(luò)結(jié)構(gòu) 10 SIMATIC PCS 7系統(tǒng)概述 10 SIMASTIC PCS 7結(jié)構(gòu)圖 105 系統(tǒng)硬件及功能配置 12 12 模塊的選擇 13 程序設(shè)計(jì) 13 14 通訊設(shè)置 16 S7300與S7200的EM277之間的ProfibusDP通訊 186 上位機(jī)監(jiān)控軟件的研究與設(shè)計(jì) 25 WINCC組態(tài)軟件的功能和特點(diǎn) 25 利用組態(tài)軟件WinCC設(shè)計(jì)系統(tǒng)監(jiān)控界面 25結(jié) 論 36參考文獻(xiàn) 37致 謝 381 緒論 在電廠輸煤系統(tǒng)中，輸煤的特點(diǎn)是工藝線路很長(zhǎng)、設(shè)備數(shù)量多、系統(tǒng)跨度大而且布置分散、設(shè)備多采用強(qiáng)電控制、燃料敞露運(yùn)輸、電纜用的數(shù)量較大、運(yùn)行的環(huán)境惡劣、電磁對(duì)設(shè)備干擾大、設(shè)備間工藝聯(lián)鎖關(guān)系比較復(fù)雜。本設(shè)計(jì)分兩步對(duì)該項(xiàng)目進(jìn)行改造，先期進(jìn)行輸煤控制系統(tǒng)的改造，而后進(jìn)行輸煤和入爐煤軟測(cè)量的改造．以期最終達(dá)到單爐瞬時(shí)燃料計(jì)量及動(dòng)態(tài)生產(chǎn)成本核算的目的?；鹆Πl(fā)電廠輸煤系統(tǒng)的工藝設(shè)備布置具有高度分散性，鍋爐的單爐單磨燃煤的計(jì)量準(zhǔn)確問(wèn)題一直是影響電廠發(fā)電成本正平衡統(tǒng)計(jì)的頑癥，更是燃煤發(fā)熱量和鍋爐燃燒效率統(tǒng)計(jì)計(jì)算尚無(wú)法解決的棘手問(wèn)題。它允許高速度周期性的小批量數(shù)據(jù)通信，適用于對(duì)時(shí)間要