| 摘要 |
<p>PROBLEM TO BE SOLVED: To store successive real-time data without any omission even in case of a fault by erasing tasks generated by a 1st and a 2nd data logging part when they are not executed within a previously set time respectively. SOLUTION: The 1st and 2nd data logging parts 31 and 32 generate tasks for storing logged data in a data storage part 33. Only one of the data logging parts 31 and 32 is given the initiative of writing allowing the logged data to be stored in a data storage part 33 by executing the generated task and the tasks generated by the 1st and 2nd data logging parts 31 and 32 are erased when not executed within the previously set times. Therefore, no plant data are omitted during the transition of the initiative of writing and successive plant data can be recorded without any break even if the data logging device gets out of order.</p> |
