Change detection apparatus, maintenance and management system, change detection method, program, and recording medium

A maintenance and management system comprising:

• a change detection apparatus including a processor coupled to a memory, the change detection apparatus comprising:
• a parameter acquiring section that acquires a value of at least one setting parameter of a field device, at predetermined time intervals,
• a change detecting section that detects whether the value of the setting parameter has been changed, and
• a change information output section that outputs change information, in response to a change in the value of the setting parameter having been detected;
• and
• a maintenance and management apparatus that includes a device registry storing unique device information and the value of the setting parameter for each of a plurality of field devices, among which each field device is the field device, and receives the change information output by the change detection apparatus, wherein the parameter acquiring section, in response to a change having been detected in the value of any setting parameter that is a change detection target, further acquires values of a plurality of non-target setting parameters that are not change detection targets, and
• the change information output section outputs the change information including the acquired values of the plurality of non-target setting parameters.

A change detection method comprising:

• acquiring a value of at least one setting parameter of a field device, at predetermined time intervals;
• detecting whether the value of the setting parameter has been changed;
• and
• outputting change information, in response to a change in the value of the setting parameter having been detected, wherein
• the parameter acquiring section, in response to a change having been detected in the value of any setting parameter that is a change detection target, further acquires values of a plurality of non-target setting parameters that are not change detection targets, and
• the change information output section outputs the change information including the acquired values of the plurality of non-target setting parameters.

A non-transitory recording medium storing thereon a program that causes a computer including a processor coupled to a memory to function as:

• a parameter acquiring section that acquires a value of at least one setting parameter of a field device, at predetermined time intervals;
• a change detecting section that detects whether the value of the setting parameter has been changed;
• and
• a change information output section that outputs change information, in response to a change in the value of the setting parameter having been detected, wherein
• the parameter acquiring section, in response to a change having been detected in the value of any setting parameter that is a change detection target, further acquires values of a plurality of non-target setting parameters that are not change detection targets, and
• the change information output section outputs the change information including the acquired values of the plurality of non-target setting parameters.