【正文】 I 摘要 可編程控制器 (PLC)作為一種用于工業(yè)環(huán)境的數(shù)字式電子系統(tǒng)，隨著微電子技術(shù)和計(jì)算機(jī)技術(shù)的迅速發(fā)展，已經(jīng)成為一種最重要、最普及、應(yīng)用場(chǎng)合最多的工業(yè)控制器。本文介紹了利用 FX2N 系列可編程序控制器為主控機(jī)， PLC 控制的鐵精粉生產(chǎn)自動(dòng)控制系統(tǒng)。根據(jù)鐵精粉自動(dòng)生產(chǎn)線工藝流程，給出了控制系統(tǒng)的硬件設(shè)計(jì)和軟件設(shè)計(jì)，并附帶I/O 分配圖、程序框圖、梯形圖及時(shí)序圖。并經(jīng)過上機(jī)調(diào)試系統(tǒng)運(yùn)行可靠，設(shè)計(jì)達(dá)到要求和目的。 關(guān)鍵詞： PLC 控制技術(shù)；鐵精粉生產(chǎn)； I/O 分配圖；梯形圖；時(shí)序圖 II Abstract Programmable logic controller (PLC) for digital electronic system of industrial environment as one, with the rapid development of microelectronics and puter technology, has bee one of the most important industrial controller, the most popular, most applications. This paper describes the use of FX2N series programmable controller as the main control machine, automatic control system, PLC control of the iron concentrate production. According to the automatic production line of iron powder, software and hardware design of the control system is given, and with the I/O distribution diagram, block diagram, ladder diagram and sequence diagram. And through the debugging system is reliable in operation, designed to meet the requirements and objectives. Keyword: PLC control technology。 iron powder production。 I/O distribution。 ladder diagram。timing diagram 目錄 摘要 .................................................................................................................... I Abstract ............................................................................................................II 目錄 .................................................................................................................... I PLC 控制技術(shù)在鐵精粉生產(chǎn)過程中的應(yīng)用 ....................................................1 第一章、緒論 ....................................................................................................1 、什么是 PLC？ ........................................................................................................... 1 、 PLC 的主要特點(diǎn)和應(yīng)用領(lǐng)域 ................................................................................... 1 、 PLC 的主要特點(diǎn) ............................................................................................ 1 、 PLC 的應(yīng)用領(lǐng)域 ............................................................................................ 2 、 PLC 的發(fā)展趨勢(shì) ....................................................................................................... 3 、 PLC 和傳統(tǒng)繼電器控制的區(qū)別 ............................................................................... 3 第二章、基本資料 ............................................................................................4 、技術(shù)要求： ............................................................................................................... 4 、功能要求： ............................................................................................................... 4 、系統(tǒng)的工作原理： ................................................................................................... 4 第三章、 PLC 控制設(shè)計(jì)步驟 ............................................................................5 、 PLC 控制系統(tǒng)設(shè)計(jì)的基本原則 ............................................................................... 5 、 PLC 控制系統(tǒng)的硬件設(shè)計(jì) ....................................................................................... 5 、 PLC 機(jī)型的選擇 ............................................................................................ 5 、 PLC 容量估算 ................................................................................................ 7 、 I/O 模塊的選擇 .............................................................................................. 7 、分配輸入 /輸出點(diǎn) ........................................................................................... 8 、安全回路設(shè)計(jì) ................................................................................................ 8 、 PLC 的軟件設(shè)計(jì) ....................................................................................................... 9 、 PLC 控制系統(tǒng)的抗干擾性設(shè)計(jì) ............................................................................. 11 、抗電源干擾 的措施 ...................................................................................... 11 、控制系統(tǒng)的接地設(shè)計(jì) .................................................................................. 12 、防 I/O 干擾的措施 ....................................................................................... 12 、 PLC 控制系統(tǒng)的調(diào)試 ............................................................................................. 13 第四 章、硬件設(shè)計(jì) ..........................................................................................14 、 PLC 的容量估算 ..................................................................................................... 14 、 PLC 選型 ................................................................................................................. 14 、分配 I/O 點(diǎn) .............................................................................................................. 15 、系統(tǒng)的電氣 原理圖 ................................................................................................. 18 第五章、軟件設(shè)計(jì) ..........................................................................................19 、系統(tǒng)程序框圖 ......................................................................................................... 19 、編制程序 ................................................................................................................. 20 、程序分析 ................................................................................................................. 23 、急停模塊 ...................................................................................................... 23 、礦位、精粉池報(bào)警模塊 .............................................................................. 23 、故障報(bào)警模塊 .............................................................................................. 24 、啟動(dòng)預(yù)告、延時(shí)模塊 ............................................................