Which of the following is NOT a common function found on a robot teach pendant?

The option that is not a common function found on a robot teach pendant is the ability to assemble components. A teach pendant is primarily a handheld device used to interact with and program robots. Its main functions include jogging, which allows the operator to manually move the robot's arm through its range of motion, testing inputs and outputs to ensure the robot is receiving the correct signals, and running pre-programmed sequences.

Assembling components typically involves more advanced automation tasks that require specific programming or computer vision systems that are integrated with the robot's operational software, rather than being a direct function of the teach pendant itself. Thus, while a teach pendant can control and program a robot to perform assembly tasks, the actual assembling of components is a function that goes beyond the basic capabilities of a teach pendant.