| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To conduct emergency supervision for detecting an anomaly of an option module with an OS by a watchdog timer reliably and easily. <P>SOLUTION: The operation of the watchdog timer is stopped temporarily in a software manner in the start-up processing in which the start-up processing time from the start-up of the option module to the beginning of the normal operation state is longer than the timer value of the timer so that the anomaly of the option module 2 with an operating system (OS) is monitored by the watchdog timer 30 of the hardware configuration. The timer value of the watchdog timer can be changed to the value larger than the time required for the completion of the start-up processing in a software manner. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
