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        IF  Variation <= 100 THEN  //此處判斷指令不執(zhí)行，Variation實(shí)際值小于等于100時(shí)該程序下端的DADDP指令沒有任何動(dòng)作
            DADDP(M8012,Speed_Ton,1,Speed_Ton);
            IF Speed_Ton >= 20 THEN
                Speed_er:=1;
            END_IF;    
        ELSE
            Speed_er:=0;
            (*Speed_Ton:=0;*)
        END_IF;

IF Speed_Ton >= 20 THEN
                Speed_er:=1;
            END_IF;    
        ELSE
            Speed_er:=0;
            (*Speed_Ton:=0;*)
        END_IF;
為什么else上方還有個(gè)end_if語句
不應(yīng)該是這樣的嗎？
IF Speed_Ton >= 20 THEN
                Speed_er:=1;  
        ELSE
            Speed_er:=0;(*Speed_Ton:=0;*)
        END_IF;