XYCOM EX-ED-UPGRADE-DVD現(xiàn)貨
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1.用I0.0控制接在Q4.0~Q4.7上的8個彩燈循環(huán)移位,用T37定時,每0.5 s移1位,首次掃描時給Q4.0~Q4.7置初值,用I0.1控制彩燈移位的方向,試設計語句表程序。
2.在按鈕I4.0按下后Q4.0變?yōu)?狀態(tài)并自保持,I0.1輸入3個脈沖后(用C1計數(shù))T37開始定時,5 s后Q4.0變?yōu)?狀態(tài),同時C1被復位,在可編程序控制器剛開始執(zhí)行用戶程序時,C1也被復位,試設計梯形圖。
3.當I0.1為ON時,定時器T2開始定時,產生每秒一次的周期脈沖。T2每次定時時間到時調用一個子程序,在子程序中將模擬量輸入PIW256的值送MWl0,試設計主程序和子程序。
4. 多個傳送帶啟動和停止示意圖如圖5.15所示。初始狀態(tài)為各個電機都處于停止狀態(tài)。按下啟動按鈕后,電動機M1通電運行,行程開關SQl有效后,電動機M2通電運行,行程開關SQ2有效后,M1斷電停止,其他傳動帶動作類推。整個系統(tǒng)循環(huán)工作。按下停止按鈕后,系統(tǒng)把目前的工作進行完后停止在初始狀態(tài)。試設計其梯形圖并寫出語句表程序。
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XYCOM EX-ED-UPGRADE-DVD
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XYCOM EX-ED-UPGRADE-DVD
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XYCOM EX-ED-UPGRADE-DVD