| 摘要 |
PURPOSE:To prevent the function of a CPU from stopping by eliminating the integration of temporal abnormality which is not considered to be repeated several times in a short time. CONSTITUTION:A CPU1' incorporates a timer reset signal output program for outputting a timer reset signal every fixed period when the CPU1' is normally operated by a prescribed program. When a CPU reset signal is inputted, the CPU1' inputs and stores current time and discriminates whether the current time has been passed from the preceding abnormality generating time by a fixed time or not. When the discriminated result is YES, the CPU1' outputs a counter reset signal for resetting a detecting frequency counter 3 and initializes a prescribed program. On the other hand, the CPU1' incorporates also an initializing program for directly initializing the prescribed program when the discriminated result is NO. |
