In Auto mode, the safety fence is monitored.

• A. False
• B. True
• C. Only when configured
• D. Not monitored

Answer: (B)

The main idea is that in auto mode the safety perimeter must be actively watched by the safety system. When the robot operates autonomously, it can move into areas where a breach of the fence could put people at risk, so the perimeter sensors need to be continuously monitored by the safety controller. This monitoring detects breaches or sensor faults and triggers a safe stop or safe state, keeping the operation within safe limits without requiring a human to intervene.

That is why the statement is the best choice: the safety fence is monitored in auto mode to ensure immediate protective action if the boundary is compromised. While there may be special maintenance or test scenarios where monitoring is adjusted, the standard expectation is that auto mode relies on active perimeter monitoring to uphold safety.