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公司基本資料信息
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步進梯形指令是專門為順序控制設計提供的指令,它的步只能用狀態(tài)寄存器S來表示,狀態(tài)寄存器有斷電保持功能,在編制順序控制程序時應與步進指令一起使用,而且狀態(tài)寄存器必須用置位指令SET置位,這樣才具有控制功能,狀態(tài)寄存器S才能提供STL觸點,否則狀態(tài)寄存器S與一般的中間繼電器M相同。在步進梯形圖中不同的步進段允許有雙重輸出,即允許有重號的負載輸出,在步進觸點結束時要用RET指令使后面的程序返回原母線。把圖1中的0-3用狀態(tài)寄存器S600-S603代替,代替以后使用步進梯形指令編程,對應的梯形圖如圖3所示。這種編程方法很容易被初學者接受和掌握,對于有經驗的工程師,也會提高設計效率,程序的調試、修改和閱讀也很容易,使用方便,程序也較短,在順序控制設計中應優(yōu)先考慮,該法在工業(yè)自動化控制中應用較多。
武漢路易達自動化設備有限公司
聯(lián)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(qū)走馬嶺匯通公路港
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