What term describes establishing a machine's reference position before automatic operation?

• A. Homed
• B. Calibration
• C. Homing
• D. Reset

Answer: (C)

Homing is the process of establishing a machine’s reference position before automatic operation. In this cycle, the controller moves the axes until they reach known reference sensors (like limit switches or encoders) and records that position as the origin for all coordinates. Once the origin is defined, all subsequent moves are referenced to that point, ensuring accurate and repeatable positioning during automatic tasks. Calibration adjusts sensor accuracy or alignment, not the starting origin. Reset clears alarms or restarts the controller without defining a position reference. After homing is completed, the machine is considered to be homed.