Arm Load Data describes which information?

• A. The end effector path
• B. The total payload mass
• C. What other mass is attached at J1 and J3
• D. The joint speeds

Answer: (C)

Arm Load Data is about recording additional masses attached to the arm beyond the end-effector payload. The information stored here identifies what other mass is mounted at specific joints, such as J1 and J3, so the controller can account for that inertia in dynamic calculations and motion planning. This helps ensure accurate torque requirements and safe, smooth movements when there are weights or fixtures on the arm. It’s not describing the end-effector’s path, nor is it a single total payload figure for the end effector, nor a setting of joint speeds.