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//I0.0下降沿 單按鈕啟停控制Q0.0
"M0.0" := NOT "I0.0" AND "M0.1";                
"M0.3" := "M0.0" AND "Q0.0";
"Q0.0" := ("M0.0" OR "Q0.0")AND NOT "M0.3"   ;
"M0.1" := "I0.0";
//只用簡單邏輯 控制電機(jī)單按鈕啟停  

//I0.0下降沿 單按鈕啟停控制Q0.0
"M0.0" := NOT "I0.0" AND "M0.1";  (*取下降沿*）              
"M0.3" := "M0.0" AND "Q0.0";  (*每次下降沿輸出狀態(tài)判斷*）
"Q0.0" := ("M0.0" OR "Q0.0")AND NOT "M0.3"   ;（*自鎖執(zhí)行加取反執(zhí)行*）
"M0.1" := "I0.0";
//只用簡單邏輯 控制電機(jī)單按鈕啟停

有點意思