Patent ID: 11947328
Assignee: OMRON CORPORATION
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A control device comprising:
a controller communicatively connected to a field apparatus group over a network;
a timer that generates time information;
a memory storing computer code; and
at least one processor configured to access the memory to execute the computer code to at least:
receive a plurality of field values from the field apparatus group over the network and store one or more process values including a field value associated with the time information generated by the timer in a time-series database;
determine, every control cycle, whether an event associated with a work process of the field apparatus group occurs and in response to the event occurring, store a chapter associated with the event with time information generated by the timer that specifies the control cycle in the time-series database, the chapter comprising a character string specifying the chapter and a type of the event; and
determine a target section of the one or more process values based on the time information corresponding to a plurality of chapters that satisfy a plurality of extraction conditions, respectively; and
extract, from the time-series database, time-series data of the stored process values corresponding to the determined target section,
wherein each of the plurality of extraction conditions comprises a character string specifying a chapter and one of the plurality of types, and a number of records to be offset, and
the target selection includes at least one process value that is offset according to the number of records to be offset.