What does homing accomplish in FANUC robots?

• A. It moves all axes to their reference limits to establish a known zero.
• B. It calibrates speed and acceleration.
• C. It locks safety interlocks.
• D. It updates the tool data.

Answer: (A)

Homing establishes a known reference position for all axes. By guiding each axis to its designated reference point (such as a limit switch or encoder index), the controller defines a precise zero position. This gives the robot a stable, repeatable origin after power-up or resets, so every subsequent move is calculated from a reliable baseline. It isn’t about tuning speed or acceleration, it doesn’t control safety interlocks, and it doesn’t update tool data. Those functions serve different needs, while homing specifically creates a repeatable origin for accurate positioning.