Status indicators on an output module indicate which of the following?

• A. The input state is high
• B. The output is active
• C. The module is faulted
• D. The power supply status

Answer: (B)

Status indicators on an output module show whether the channel is currently energized and driving the connected device. When the PLC logic turns an output on, the corresponding indicator lights to confirm the output is active, signaling that the actuator or relay is being energized. Inputs and faults have their own indicators on the system, and power-supply status is typically shown elsewhere, so the primary purpose of the output module’s status LED is to confirm the output is active.