【正文】 ..........................93 配料生產(chǎn)線系統(tǒng)分析 ............................................................................................................10 配料生產(chǎn)線系統(tǒng)的概述與分類 .....................................................................................10 配料生產(chǎn)線系統(tǒng)的組成 .................................................................................................11 配料生產(chǎn)線的控制要求 .................................................................................................12 配料生產(chǎn)線控制系統(tǒng)的流程圖 .....................................................................................13 配料生產(chǎn)線控制系統(tǒng)的性能及特點(diǎn) .............................................................................14 配料自動(dòng)控制過程 .........................................................................................................144 配料生產(chǎn)線控制系統(tǒng)的硬件設(shè)計(jì) ........................................................................................16 配料生產(chǎn)線的工藝 .........................................................................................................16 可編程控制器 PLC 的選型 ...........................................................................................17 輸入輸出（I/O）點(diǎn)數(shù)的確定 .................................................................................17 內(nèi)存估計(jì) ...................................................................................................................18 PLC 的類型 ..............................................................................................................18 輸入輸出模塊的選擇 ...............................................................................................18 電源的選擇 ...............................................................................................................18 經(jīng)濟(jì)性的考慮 ...........................................................................................................19 機(jī)型的選擇 ...............................................................................................................195 / 70 變頻器的選擇 .................................................................................................................20 變頻器的概述 ...........................................................................................................20 傳送帶和攪拌機(jī)的電機(jī)調(diào)速系統(tǒng) ...........................................................................20 變頻器型號(hào)的選擇 ...................................................................................................21 電機(jī)的選擇 .....................................................................................................................21 電機(jī)選擇的基本內(nèi)容 ...............................................................................................21 連續(xù)工作制的電機(jī)容量選擇 ...................................................................................23 電機(jī)型號(hào)的選擇 .......................................................................................................24 系統(tǒng)的硬件框圖 .......................................................................................................255 配料生產(chǎn)線控制系統(tǒng)的軟件設(shè)置 ........................................................................................27 編程軟件 STEP7 的概述 ................................................................................................27 程序設(shè)計(jì)常用方法 .........................................................................................................28 經(jīng)驗(yàn)設(shè)計(jì)法 ...............................................................................................................28 邏輯設(shè)計(jì)法 ...............................................................................................................28 順序控制法 ...............................................................................................................28 PLC 地址分配 .................................................................................................................29 輸入/輸出的分配如下 ............................................................................................29 PLC 外部接線圖 ......................................................................................................30 PLC 符號(hào)表 ..............................................................................................................31 各程序段模塊分析 ........................................................................................................31 初始化參數(shù) ...............................................................................................................31 三種啟動(dòng)方式 ...........................................................................................................32 傳送帶 1 號(hào)運(yùn)料 ......................................................................................................34 攪拌配料與運(yùn)走配料 ..............................................................................................35 程序的循環(huán)設(shè)定 ......................................................................................................38 指示燈和報(bào)警部分 ..................................................................................................406 系統(tǒng)監(jiān)控畫面編程 ................................................................................................................43 組態(tài)王的簡介 .................................................................................................................43 組態(tài)王與 PLC 的通訊 ....................................................................................................45 組態(tài)變量 .........................................................................................................................46 主畫面 .............................................................................................................................47 實(shí)時(shí)趨勢(shì)畫面 .................................................................................................................49 參數(shù)調(diào)節(jié)畫面 .................................................................................................................49 編程語言 ..................................................................................................................