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             X0                                                                                              C1 K5
----------▏▏--------------------------------------------------------------------(           )
           啟 停                                                                                            X0動作 次數(shù)
                                                                                                    
--------［   =C1     K1    ］--------------------------------------------------［   SET   M1］
                                                                                                                X0動作1次M1 ON
          
--------［   =C1     K2    ］--------------------------------------------------［   RST   M1］
                                                                                                               X0動作2次M1 OFF
             M1                                                                                              Y20
----------▏▏--------------------------------------------------------------------(           )
            控制Y20                                                                                    輸出

                                                                                                                 M2        
---------［   =C1     K2    ］---------------------------------------------------(           )
                                                                                                              X0動作2次M2 ON

             M2                                                                                              
----------▏▏-------------------------------------------------------------------［   RST   C0］
             C0復位用                                                                                 X0動作2次C0復位

          

費勁的思路，還不能實現(xiàn)。
給你個簡單的
----|X0|-----[ FF Y0]

----|X0|-----[ ALT Y0]也可以

一個按鈕有多種方法

最經(jīng)典的一鍵啟停沒說，，，，1常開        2常閉               2線圈
                                                         1常閉       2常開

你這程序有問題

    

一鍵起停還是ALT指令

明明一個指令可以實現(xiàn)為什么要搞這么復雜

就算要用比較指令切換狀態(tài)，也是0和1切換，而不是1和2，因為你復位或者斷電后初始值是0，

用計數(shù)的方式，按一下就啟動，按第二下就停止，也復位計數(shù)器歸零。

能簡單絕不復雜