A20B-1002-0970FUANC伺服

從功能表圖可以看出，在0-3各步中只有一個步在某時刻接通而其他步都在斷開，把各步用中間繼電器M200-M203代替，就很容易用移位寄存器實現控制。圖4為用移位寄存器編程時的梯形圖，采用移位寄存器M200-M217的前四位M200-M203代表4個步，組成1個環形移位寄存器。用移位寄存器主要是對數據、移位、復位3個輸入信號的處理。該方法設計的梯形圖看起來簡潔，所用指令也較少，但對較復雜控制系統設計就不方便，使用過程中在線修改能力差，在工業控制中使用較少，大多數應用在彩燈順序控制電路中。

武漢路易達自動化設備有限公司
聯系人：李先生
電話：18971414423
固話：027-83238817
傳真：027-61537051
QQ:505528191
地址：武漢市東西湖區走馬嶺匯通公路港
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