【正文】 f Hardware, the software programming and the whole simulation program. In analyzing to bellingmachine workflow foundation, this paper gives the PLC control system of the hardware design and software design. Design method and design planadopted of temperature control system is introduced respectivelyin hardware , The software design gives emphasis to method of automatic work procedure to draw up and measures of adopting in the credibility of the tool machine work, economy,its stipulation condition ,carrying out of constraint condition between steps and interlock protection. In addition to the principle design,this paper also designs control system in process technology. Keywords control system PVC product line SKG400 belling machine PLC 目錄 III 目 錄 摘 要 .................................................................................................................... I Abstract ............................................................................................................II 第一章 緒論 ..................................................................................................... 1 課題來(lái)源 ............................................................................................. 1 為某橡塑機(jī)械廠新產(chǎn)品研制項(xiàng)目 .......................................... 1 新產(chǎn)品 定義 .............................................................................. 2 設(shè)計(jì)要求 ............................................................................................ 2 生產(chǎn)工藝 ................................................................................ 2 控制要求 ................................................................................ 3 第二章 控制要求分析與方案的確定 ............................................................. 5 繼電器接觸器控制系統(tǒng)方案 ........................................................... 6 繼電器接觸器控制系統(tǒng)的優(yōu)點(diǎn) ............................................ 6 繼電器接觸器控制系統(tǒng)的缺點(diǎn) ............................................ 7 工控機(jī)控制系統(tǒng)方案 ....................................................................... 7 工控機(jī) 控制系統(tǒng)的優(yōu)點(diǎn) ........................................................ 7 工控機(jī)控制系統(tǒng)的缺點(diǎn) ........................................................ 7 PLC 控制系統(tǒng)方案 ........................................................................... 7 PLC 控制系統(tǒng)的優(yōu)點(diǎn) ............................................................ 7 PLC 控制系統(tǒng)的缺點(diǎn) ............................................................. 8 第三章 PLC 選擇及確定 ................................................................................ 9 確定輸入 /輸出設(shè)備、統(tǒng)計(jì) I/O 點(diǎn)數(shù) ................................................ 9 輸入點(diǎn) .................................................................................... 9 輸出點(diǎn) .................................................................................... 10 選擇 ................................................................................ 11 PLC 類(lèi)型選擇 ................................................................................. 11 第四章 硬件設(shè)計(jì) ........................................................................................... 13 智能溫控表 .............................................................................. 13 接近開(kāi)關(guān) .................................................................................. 13 接觸器 ...................................................................................... 14 隔離電源 ........................................................................... 14 第五章 軟件設(shè)計(jì) .......................................................................................... 15 總體框圖設(shè)計(jì) ................................................................................. 15 IV 手動(dòng)調(diào)整程序設(shè)計(jì) ......................................................................... 15 手動(dòng)程序設(shè)計(jì) ...................................................................... 15 回原位程序設(shè)計(jì) .................................................................. 15 自動(dòng)程序設(shè)計(jì) ................................................................................. 16 模擬程序設(shè)計(jì) .................................................................................. 22 公共程序設(shè)計(jì) ................................................................................. 23 第六章 結(jié)論與展望 ...................................................................................... 24 致謝 ................................................................................................................. 25 參考文獻(xiàn) ......................................................................................................... 26 第一章 緒論 1 第一章 緒論 目前，我國(guó)建筑給排水的管道一般是鋼管、水泥管道或鑄鐵管，現(xiàn)階段我國(guó)很多地方還在繼續(xù)使用。 品研