US Patent 10055477 Data collection apparatus and data collection program

Provided are a first storage unit 411b configured to store the data which are transmitted among the control apparatuses 21 to 24; a group selector 414a configured to divide the memory area in the first storage unit 411b into multiple groups, to further divide the memory area in each group into multiple subgroups, and to select at least one divided subgroups as a collection group, which is a unit to continuously read data in the group; a schedule generator 414b configured to generate the schedule, on the basis of the number of subgroups selected as each collection group and the collection cycle for the data collection; and a data reader 414e configured to read the data on the basis of the generated schedule.