Abstract: A data processing apparatus is provided comprising a data acquisition unit configured to acquire sensor data of a sensor that is capable of measuring physical quantities of a measurement target, an interpretation unit configured to attempt to interpret, in accordance with a definition for each field of the sensor data, sensor data in the respective fields, and an output unit configured to output the sensor data interpreted by the interpretation unit for a field of which a definition is known, and to output the sensor data acquired by the data acquisition unit as is for a field of which a definition is unknown along with an indicator indicating unidentified. The data processing apparatus further comprises a confirming unit configured to later confirm a definition for at least one field among fields of which the definition is unknown.

Abstract: Provided is a data processing apparatus including a data acquisition unit configured to acquire target data including sensor data of a sensor capable of measuring a physical quantity of a measurement target and a physical address uniquely assigned to the sensor, an identification unit configured to identify a format of the sensor data based on at least a part of the physical address, and an interpretation unit configured to interpret the sensor data according to the identified format. The physical address may be a MAC address for uniquely discriminating the sensor on a network.

Abstract: There is provided a network management system using wireless network management devices each having a plurality of security policies. With the network management system, the wireless network management devices can be concurrently used in networks with a plurality of security levels, and security can be ensured without installing firewalls externally, so that labor for setting and operating a network for redundancy can be saved. The network management system includes: a first network NW1 to which plant management devices 11 and 12 are connected; a second network NW2 to which field devices 51 to 5n are connected; and wireless network management devices 61 and 62 each having a firewall function and connected to the first network NW1 and the second network NW2.

Abstract: There is provided a network management system using wireless network management devices each having a plurality of security policies. With the network management system, the wireless network management devices can be concurrently used in networks with a plurality of security levels, and security can be ensured without installing firewalls externally, so that labor for setting and operating a network for redundancy can be saved. The network management system includes: a first network NW1 to which plant management devices 11 and 12 are connected; a second network NW2 to which field devices 51 to 5n are connected; and wireless network management devices 61 and 62 each having a firewall function and connected to the first network NW1 and the second network NW2.