你好!我的PLC是SYSMAC C200H CPU01. ALARM ERROR燈亮.LK201和NT631C有數句交換(上傳和接收指示燈不停的閃)但是NT631C白屏沒有任何顯示.按復位鈕閃了一下然后仍然如此,拔下電纜顯示:SYSTEM INITIALIZING .ALARM ERROR還燈亮.換PORT B口顯示:[comm.port a receive error] time-out error occurs while downloading by the following case: *disconnection of the connecting cable *stopped host *incorrect time-out period 我的觸摸屏用的時間不長,型號是:NT631C-ST141B-EV1 .LOT NO.0659 出現白屏時,按屏的表面無聲音響應,重新上電后仍然如此.請指教.謝謝!