X0  

-------------------▎       ▎--------------------------------------------------------------------［PLS  M10］

                      啟動 停止                                                                                               上升沿觸發(fā)

                          M10                                C1
------------------▎       ▎--------------------▎  /    ▎----------------------------------------(    Y20    )
                      由X0  上升沿觸發(fā)      ∣                                                                           輸出
                          Y20                          ∣
                                                           ∣
-----------------▎       ▎------------------
                       自鎖

                         M10
-----------------▎       ▎-------------------------------------------------------------------------(C1   K2  )
                     由X0  上升沿觸發(fā)                                                                                  啟停按鍵按下次數(shù)計數(shù)
                          
                                                                                                                                      
                        CI
-----------------▎       ▎-------------------------------------------------------------------------(T1 0  K50 )
                     C1計數(shù)為2時ON                                                                                    C1常開點ON時T10計時開始

                        T10
-----------------▎       ▎------------------------------------------------------------------------［RS T  CI ］
                     T10 ON  C1復位控制                                                                              C1復位