Recording medium for verifying correlation between test signal and test result signal, verification apparatus and verification method

A verification apparatus comprising:

• a processor;
• and
• a memory configured to store change characteristic information corresponding to a field device, the change characteristic information representing a change that will be performed in a plant to a signal generated by the field device during operation of the plant,
• wherein the processor is configured to
• acquire test information including a test signal to be generated by a field device that is installed in the plant and field device identification information that uniquely identifies the field device;
• instruct the field device to generate the test signal when the plant is operated;
• acquire result information including a test result signal output by a monitor device that is installed in the plant, the test result signal being output in response to the field device generating the test signal;
• read from the memory the change characteristic information corresponding to the field device;
• verify whether or not the test signal and the test result signal correlate with one another;
• and
• perform an inverse change that is inverse to the change characteristic information read from the memory on the test result signal, and verifying whether or not the test signal and the test result signal having the inverse change performed thereon correlate with one another;
• or
• perform an identical change that is identical to the change characteristic information read from the memory on the test signal, and verifying whether or not the test signal having the identical change performed thereon and the test result signal correlate with one another.

A verification method by which a verification apparatus verifies a plant, the verification method comprising:

• acquiring, by the verification apparatus, test information including a test signal to be generated by a field device that is installed in the plant and field device identification information that uniquely identifies the field device;
• instructing the field device to generate the test signal when the plant is operated;
• acquiring, by the verification apparatus, result information including a test result signal output by a monitor device that is installed in the plant, the test result signal being output in response to the field device generating the test signal;
• storing, on a memory, change characteristic information corresponding to the field device, the change characteristic information representing a change that will be performed in the plant to a signal generated by the field device during operation of the plant;
• reading from the memory the change characteristic information corresponding to the field device;
• verifying, by the verification apparatus, whether or not the test signal and the test result signal correlate with one another;
• and
• performing an inverse change that is inverse to the change characteristic information read from the memory on the test result signal, and verifying whether or not the test signal and the test result signal having the inverse change performed thereon correlate with one another;
• or
• performing an identical change that is identical to the change characteristic information read from the memory on the test signal, and verifying whether or not the test signal having the identical change performed thereon and the test result signal correlate with one another.