The FANUC controller supports up to eight motion groups.

• A. Two
• B. Sixteen
• C. Eight
• D. None

Answer: (C)

Motion groups are independent interpolation channels in a FANUC controller, letting multiple sets of axes or tasks be controlled in parallel without stepping on each other’s updates. The controller’s architecture is designed to support eight of these separate motion groups, so you can coordinate up to eight parallel motion tasks while keeping predictable servo update rates and timing. That’s why eight is the correct limit—the hardware and software design specify eight groups, not fewer or more. If you see numbers like two or sixteen, they don’t match the documented capability for this class of controller, and none would imply unlimited parallel motion, which isn’t the case.