【正文】 ........................................................ 4 自動售貨機的工作原理 ............................................................................. 6 本章小結(jié) ............................................................................................................. 6 3 系統(tǒng)的硬件設計 ................................................................................................... 7 系統(tǒng)硬件結(jié)構(gòu)框圖 ............................................................................................. 7 傳感器選型 ........................................................................................................ 7 電動機的選型 ..................................................................................................... 8 顯示屏選型 ........................................................................................................ 8 PLC 的選型 ......................................................................................................... 9 PLC 的定義 ................................................................................................. 9 PLC 控制系統(tǒng)中的 I/O 點數(shù)計算與分配 ............................................... 10 PLC 的選擇依據(jù) ....................................................................................... 12 本章總結(jié) ........................................................................................................... 13 4 系統(tǒng)的軟件設計 ................................................................................................. 14 軟件系統(tǒng)結(jié)構(gòu)框圖 .......................................................................................... 14 IV 系統(tǒng)流程圖 ...................................................................................................... 14 投幣環(huán)節(jié)設計 ................................................................................................... 15 選擇環(huán)節(jié)設計 ................................................................................................... 16 比較環(huán)節(jié) ........................................................................................................... 18 退出環(huán)節(jié)設計 ................................................................................................... 19 本章總結(jié) .......................................................................................................... 20 5 自動售貨機的實現(xiàn) ............................................................................................ 21 組態(tài)王通訊 ....................................................................................................... 21 外部設備定義 .......................................................................................... 21 變量動畫的連接 ....................................................................................... 22 主界面的設計 ................................................................................................... 24 實物的實現(xiàn) ...................................................................................................... 25 本章總結(jié) ........................................................................................................... 27 6 總結(jié)與展望 ......................................................................................................... 28 總結(jié) ................................................................................................................... 28 展望 ................................................................................................................... 28 參考文獻 ................................................................................................................... 29 附錄 ............................................................................................................................ 30 致謝 ............................................................................................................................ 42 1 1 緒論 自動售貨機是一種全新的零售模式。 then write the corresponding program to achieve functional requirements based on the system39。 關鍵詞： 自動售貨機 PLC 組態(tài)王 II PLCbased vending machine design Abstract In the everchanging technology and now social, vending machines applications has bee increasingly widespread, with extensive use of vending machines, for its performance requirements are high, so how much more simple design is especially convenient vending machines important. In this thesis, Siemens S7300 series PLC to achieve functional control of the vending machine. Design of this project can be realized coin vending machines, shopping, coin and other functions, and can be remotely monitored. Firstly, according to the needs of the system to make the overall design。本課題 設計 的售貨機能實現(xiàn)投幣、購物、退幣等 功能，且可以進行遠程監(jiān)控。I