| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a field instrument capable of accurately grasping events that occurred in the past without a significant increase in scale and cost. <P>SOLUTION: A wireless field instrument 1a includes: a flash memory 14 that stores a program PG specifying the operation of the instrument; a ferroelectric memory 15 that stores a parameter PM used in the instrument; and a log generation part 16a that generates an operation log LG, in which an event number that is information indicating the kind of an event generated in the instrument, a count value that is information indicating the time of event occurrence, and related information that is information related to the event are combined, and that stores the log in a log storage area which is reserved in a free space of the ferroelectric memory 15. <P>COPYRIGHT: (C)2013,JPO&INPIT |
