| 摘要 |
PURPOSE:To shorten the trouble diagnostic time and to attain the quick use of a trouble diagnostic controller after its start by performing a trouble diagnosis at an action time set previously. CONSTITUTION:An action time detecting circuit 1 counts the action time of a trouble diagnostic controller and transmits the action time data 11. A deciding circuit 2 outputs a coincidence signal 12 when the coincidence is obtained between the trouble diagnostic time stored in the circuit 2 itself and the data 11. A storage circuit 3 stores the presence/absence of the signal 12 even after a power supply is cut off and outputs the ON state of the power supply as a trouble diagnostic signal 13. A control circuit 4 checks the state of the signal 13 to decide whether a trouble diagnostic circuit 5 should be actuated or not. Thus the trouble diagnosis can be automatically carried out at each action time of the trouble diagnostic controller set previously. As a result, the trouble diagnostic time is minimized and the working efficiency of the trouble diagnostic controller is improved. At the same time, the trouble diagnostic controller can be immediately used at its starting time point. |
