Patent ID: 8849997

Claim:
An information management apparatus comprising: a first collection unit that collects quality information, from at least one of a process controller, a field network, and a field device, and a measurement value measured by the field device, the process controller being connected to the information management apparatus via a control network, the field device being connected to the process controller via the field network, and the quality information indicating a validity of the measurement value based on status information of the at least one of the process controller, the field network, and the field device; a second collection unit that collects status information from at least one of the process controller, the field network, the field device, and the control network; and a correction unit that corrects the quality information collected by the first collection unit using the status information collected by the second collection unit, wherein the second collection unit collects device data of at least one of the process controller, the field device, a path device included in the field network, and a path device included in the control network, in addition to the status information, and wherein the correction unit generates the status information using the device data collected by the second collection unit for at least one of the process controller, the field network, and the field device, each not having status information.