【正文】
形圖程序:指令表程序:LD = Network 2 LDN AN AN T37 LDN A T38 A OLD = Network 3 LDN AN AN T39 TON T37, 80 Network 4 LDN AN AN T38 A T37 LDN AN T38 A OLD LDN AN T38 A OLD = Network 5 LDN AN A T37 LDN A OLD LDN A OLD TON T38, 20 Network 6 LDN AN AN T39 A T38 LDN A T38 A OLD = Network 7 LDN AN A T38 TON T39, 100 Network 8 LDN AN AN T40 LDN A T42 A OLD = Network 9 LDN T42 AN AN TON T40, 100 Network 10 LDN AN AN T41 A T40 LDN A T38 A OLD = Network 11 LDN AN AN T42 A T40 TON T41, 80 Network 12 LD T41 AN AN T42 AN LDN T42 A AN OLD LDN T42 AN A OLD = Network 13 LDN AN A T41 LDN A OLD LD AN OLD TON T42, 20 Network 14 LD = 六、實(shí)驗(yàn)過(guò)程記錄及分析根據(jù)實(shí)驗(yàn)要求,編寫(xiě)plc梯形圖程序。打開(kāi)軟件錄入程序,運(yùn)行調(diào)試直到達(dá)到正確控制紅綠燈的亮滅。模擬軟件S7200調(diào)試時(shí),雙向紅綠燈開(kāi)始正常工作,橫向的綠燈和縱向的紅燈先亮。橫向的綠燈亮維持8s,在橫向綠燈亮的同時(shí)縱向的紅燈也亮起,并維持10s。第8秒時(shí)橫向的綠燈熄滅,同時(shí)亮起黃燈并維持2s后熄滅。第10s時(shí),橫向黃燈熄滅的同時(shí)亮起紅燈并維持10s,同時(shí)縱向的綠燈亮起并維持8s。當(dāng)縱向綠燈熄滅并亮起黃燈持續(xù)2s后紅燈亮起,同時(shí)橫向的綠燈也亮起并維持8s到此一個(gè)循環(huán)就此結(jié)束,下一個(gè)循環(huán)開(kāi)始。、同時(shí)其中一路常亮綠燈,另一路常亮紅燈。說(shuō)明實(shí)驗(yàn)程序正確,保存好實(shí)驗(yàn)數(shù)據(jù),做好記錄。關(guān)閉軟件。七、時(shí)序分析 正常無(wú)故障運(yùn)行:,,。、:橫向紅燈()亮,縱向綠燈()亮。:橫向綠燈()亮,縱向紅燈()亮。八、實(shí)驗(yàn)心得體會(huì)通過(guò)實(shí)驗(yàn)操作,了解掌握了plc編程的原理和方法,同時(shí)實(shí)驗(yàn)前期遇到很多各類問(wèn)題,均得到了解決,對(duì)plc產(chǎn)生了初步的興趣。對(duì)以后進(jìn)一步學(xué)習(xí)plc相關(guān)知識(shí)奠定了堅(jiān)實(shí)的基礎(chǔ)。