The controller directs the operation and motion of the robot but is not responsible for communication with external devices.

• A. True
• B. False
• C. Not specified
• D. Sometimes

Answer: (B)

In robotics, the controller is responsible for more than just directing motion; it also handles the data exchange with external devices. To move, monitor, and coordinate safely, the controller must receive inputs from sensors and other equipment (or from a PLC, safety devices, other controllers, etc.) and send commands or status updates back through a communication interface. So saying the controller is not responsible for communicating with external devices isn't accurate in typical architectures, where reliable communication is part of how the controller operates and makes decisions. If a system does use a separate communication module, the controller still relies on that interface to perform its control tasks, and the integration of this communication is essential for correct operation.