A motion group is a group of programs in the controller that work together to perform motion.

• A. True
• B. False
• C. Sometimes
• D. Depends on controller

Answer: (B)

Understanding how motion is organized inside a controller helps you see what a motion group actually represents. A motion group is a set of joints or axes that are controlled together to achieve coordinated motion. This grouping lets the motion planner know which parts of the mechanism should move in sync and how to interpolate a trajectory across those axes. It defines who moves together, not which pieces of software run to perform the move. The programs or tasks that implement logic may be separate and can include multiple modules, but the group itself is about the hardware or kinematic units involved in the motion. Therefore, describing a motion group as a group of programs would be inaccurate, which is why the statement is false. In some controllers, terminology might vary, but the fundamental idea—it's about coordinating axes—remains consistent.