Abstract: A work assistance system includes a storage storing work data for each of a plurality of devices, the work data indicating work performed to maintain the plurality of devices, a setter configured to set at least one attribute among a plurality of prescribed attributes with respect to the work data stored in the storage, an extractor configured to interpret the attribute set in the work data and to extract work data in which a specific attribute is set, and a provider configured to provide the work data extracted by the extractor.

Abstract: A device maintenance apparatus which performs a maintenance of a device, includes: a storage configured to store device definition information in which a parameter of the device is defined; an acquirer configured to acquire device information from a maintenance target device which is a device of maintenance target; and a display processor configured to display, on a display, a first button using the device definition information stored in the storage and the device information acquired by the acquirer, the first button being a button for transitioning to a screen on which details of the parameter is displayed for each parameter of the maintenance target device, at least a name of the parameter and a value of the parameter being attached to the first button.

Abstract: A device maintenance apparatus which performs a maintenance of a device, includes: a storage configured to store device definition information in which a parameter of the device is defined; an acquirer configured to acquire device information from a maintenance target device which is a device of maintenance target; and a display processor configured to display, on a display, a first button using the device definition information stored in the storage and the device information acquired by the acquirer, the first button being a button for transitioning to a screen on which details of the parameter is displayed for each parameter of the maintenance target device, at least a name of the parameter and a value of the parameter being attached to the first button.

Abstract: A work assistance system includes a storage storing work data for each of a plurality of devices, the work data indicating work performed to maintain the plurality of devices, a setter configured to set at least one attribute among a plurality of prescribed attributes with respect to the work data stored in the storage, an extractor configured to interpret the attribute set in the work data and to extract work data in which a specific attribute is set, and a provider configured to provide the work data extracted by the extractor.

Abstract: A field device for measuring information associated with each of equipments installed in a plant includes: a measurer configured to measure running condition of the equipment, and to output measurement information representing result of the measurement; a diagnoser configured to diagnose the running condition of the equipment represented by the measurement information in accordance with predetermined first diagnosis rule, to diagnose result diagnosed in accordance with the first diagnosis rule in accordance with predetermined second diagnosis rule, and to output diagnosis result information representing result diagnosed in accordance with the second diagnosis rule as result of diagnosing the running condition of the equipment; wherein the second diagnosis rule is configured to be set condition for confirming influence of an external factor to the running condition of the equipment.