| 摘要 |
PROBLEM TO BE SOLVED: To enable an operator to take measure conforming to the recognition, that power is cut off by providing an exclusive displaying means informing the operator that the power is cut off before it. SOLUTION: A timer 7 counts time while data from an operation part 15 is not inputted at a main control part 1, and when it is equal to or longer than set time previously stored in a nonvolatile RAM, a main switch 21 is turned off the power is cut off. The exclusive displaying means informs the operator accordingly at the time of cutting off the power. Thus, the timer 7 for detecting the time when key operation is not performed is reset. It monitors whether the key operation is made or not after resetting the timer 7, and it performs counting when the key operation is not made, and remaining time is checked when it is not cut-off time by the result of the counting, and if it is informing time to the operator (for instance 30 seconds before the cut-off time), a message is displayed on the exclusive displaying means. |
