| 摘要 |
<p>PURPOSE:To surely execute charging by constituting the title equipment so that a data processing is completed, when charging of a backup circuit is ended, after a prescribed data processing is executed, and the data processing is not completed, unless charging is ended. CONSTITUTION:When a programmable controller 2 is connected to other external equipment, and a power source comes to be supplied from the outside, a charging circuit of a backup circuit 20 starts charging to a capacitor. When a charging detecting circuit 30 outputs a charging end signal S, after a prescribed data processing period T1 is ended substantially, a CPU 8 informs a data processing completion by a display, etc. Unless the charging detecting circuit 30 outputs the charging end signal S, the notice of the data processing completion is withheld until the charging end signal S is outputted. In such a way, it is prevented that the power source is detached in the state of charging shortage, as it is.</p> |
