What two keys are pressed to clear a DCS error?

The correct choice is based on the specific key combination needed to effectively clear a DCS (Dual Containment Safety) error in FANUC robotics systems. Pressing the SHIFT + RESET keys will trigger the required command that allows the operator to reset the DCS fault and bring the robot back to a safe operational state.

In the context of safety and operational protocols, the SHIFT key is often used in conjunction with the RESET function to ensure that users are intentionally acknowledging and addressing the fault. This combination acts as a safeguard, ensuring that accidental resets do not occur when an error is present, which could potentially lead to unsafe conditions.

The other options involve key combinations that do not correspond to the specific functionality required to clear DCS errors. Understanding the correct key commands is crucial for safe operation and efficient troubleshooting in robotic systems.