What does 'speed control' involve when programming FANUC Handling Tools?

Speed control in the context of programming FANUC Handling Tools primarily pertains to altering the robot's movement velocity. This aspect is crucial because the speed at which a robot operates can significantly influence its efficiency and the safety of the surrounding environment. By adjusting the movement velocity, programmers can optimize how quickly a robot performs tasks while ensuring it operates within safe limits, especially when dealing with tasks that require precise handling or coordination with other machinery or operators.

The other options, while related to robotic programming, do not specifically address the essence of speed control. For example, adjusting the duration of robotic tasks falls under task timing rather than speed. Modifying the weight of handled items pertains to load capacities and physical capabilities, which is not a direct aspect of speed. Setting the positioning accuracy involves ensuring the robot is precise in its endpoints rather than how quickly it travels between those points. Therefore, altering the robot's movement velocity is the key element that defines speed control in FANUC Handling Tools programming.