Learn in the textbookData Types by Data Format and Source of Origin
DefinitionOperation log data (稼働ログデータ) is data that automatically records the operating status of equipment such as machines, facilities, and servers.
ExplanationFor instance, it records how long a machine ran, when it stopped, when errors occurred, and changes in temperature or rotation speed. Looking through the accumulated records lets you notice early signs of failure and decide when to carry out inspections.
AnalogyLike a car's odometer or driving recorder, it is a diary in which a machine writes down how it has been working.
Memory hookThe Japanese word 稼働 means a machine running and doing its job, so read it as a machine's work diary.