What must be engaged before pressing ENTER for INSERT, MODIFY or DELETE with regard to motion step programming?

• A. SERVO power
• B. HOLD button
• C. AREA key
• D. START button

Answer: (A)

Engaging servo power is required because it puts the robot’s axes into an active, safe, and controllable state. When the servo drives are powered on, the controller can interact with the actual motion hardware, allowing edits to the motion steps (insert, modify, or delete) to be recognized and applied correctly. Without servo power, the system is in a non-moving, safety-latched state and editing steps could be unsafe or unsupported.

The other controls serve different functions during teaching or operation but do not gate the editing of motion steps. The HOLD button is for maintaining the current position, the AREA key selects a work area, and the START button begins program execution. None of these are the prerequisite to commit changes in the motion step editor the way servo power is.