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基于s7-200plc的水箱液位控制系統(tǒng)設計(已修改)

2024-11-20 10:58 本頁面
 

【正文】 基于 S7200PLC 的水箱液位控制系統(tǒng)設計 學生姓名 學院名稱 專業(yè)名稱 指導教師 I 摘要 隨著微處理器、計算機和數(shù)字通訊技術的快速發(fā)展 , 計算機控制系統(tǒng)在工業(yè)領域的應用越來越多廣泛 , 它的重要性也越來越受到人們的肯定。 基于 MCGS和 S7200PLC的液位比值控制系統(tǒng) 就是組態(tài)軟件和可編程序控制器( PLC)聯(lián)合應用的實例。在這個設計中,利用 MCGS 組態(tài)軟件對數(shù)據(jù)、圖形進行組態(tài),進而做出上下水箱的動態(tài)仿真畫面。然后 PLC 進行數(shù)據(jù)采集、處 理并與 MCGS 平臺進行通訊,從而對液位比值對象進行全面監(jiān)控。 本設計采用了 SIEMENS(西門子)公司的 S7200 系列進行程序的編寫。將編寫正確的 PLC 程序與在 MCGS 組態(tài)軟件下做出的動態(tài)界面進行動態(tài)連接,在經(jīng)過檢查證明組態(tài)的設置沒有錯誤后,進入 MCGS 的運行環(huán)境,可以在 MCGS 運行環(huán)境下看到液位的實時曲線的變化輸出情況,隨時對水箱的液位狀況進行調(diào)整和監(jiān)測。在運行環(huán)境中可以通過鼠標在線的改變 PID 的參數(shù)設定值來實現(xiàn)對上水箱的液位調(diào)節(jié)和控制,使系統(tǒng)達到要求值 ,從而大大提高了工作效率。 關鍵詞 液位比值 ; PLC; MCGS II Abstract Along with fast development of the microprocessor, the puter and the digital munication technology, the puter control system is more and more widely applied in the field of industry, and its importance is also increasingly affirmed. Fluidlevelratio control system based on MCGS and S7200 PLC is the application model bining the configuration software with PLC. In this design, MCGS is applied for data and graphic configuration。 there by a dynamic display picture with realtime feature is created. Then PLC acquires and processes data from the sensors, and municates with MCGS platform, thus makes the fluidlevelratio object supervised and controlled totally. The project uses S7200, a series of PLC produced by SIEMENS, to make programming. The correct PLC code is dynamically lined to the realtime picture created by MCGS, then switches to MCGS running environment after correct configuration, thus the change tendency of the levels can be viewed on the screen to make the realtime adjustment and supervision of the level. Under running environment, PID parameters will be tuned on line so as to take the best control of the levels of water tanks with the system operating at the given point and high efficiency. Keywords FluidLevelRatio PLC MCGS I 目 錄 1 緒論 ............................................................................................................................................. 1 PLC 的產(chǎn)生、定義及現(xiàn)狀 ................................................................................................... 1 PLC 的產(chǎn)生、定義 ........................................................................................................ 1 PLC 的發(fā)展現(xiàn)狀 ............................................................................................................ 1 過程控制的發(fā)展 .................................................................................................................. 2 本文研究的目的、主要內(nèi)容 .............................................................................................. 3 本文研究的目的、背景和意義 ................................................................................... 3 本文研究的主要內(nèi)容 ................................................................................................... 4 2 西門子 S7200PLC 介紹 ............................................................................................................. 6 S7200PLC 的結(jié)構(gòu) ............................................................................................................... 6 S7200PLC 的工作原理 ....................................................................................................... 7 S7200PLC 上控制算法的介紹 ........................................................................................... 7 3 PLC 控制方案設計 ...................................................................................................................... 9 設計要求 .............................................................................................................................. 9 系統(tǒng)設計 .............................................................................................................................. 9 控制流程圖 ........................................................................................................................ 10 系統(tǒng)模塊選擇與地址分配 ................................................................................................ 10 硬件設計 .............................................................................................................................11 電 氣控制主接線圖 ......................................................................................................11 操作回路接線圖 ..........................................................................
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