What is meant by a "point-to-point" test in BAS commissioning?

• A. Verifying that each field device communicates correctly with the corresponding point in the control network
• B. Testing network speed
• C. Verifying power supplies
• D. Verifying software version

Answer: (D)

The main idea here is end-to-end verification between a field device and its mapped point in the building automation system. A point-to-point test checks that the signal from each sensor or actuator is correctly transmitted, received, and interpreted by the control point it’s associated with. In practice, you observe the device’s real reading or action and confirm that the BAS point shows the same value and that the controller responds as expected. This catches issues like miswiring, wrong point mapping, or incorrect scaling, ensuring the data path from field device to control point is accurate.

This is not primarily about network speed, power supplies, or software version. Those are separate checks: network speed looks at performance of the communication network itself, power checks ensure devices are powered, and software version confirms the controller or device firmware is up to date.