Fanuc Robot External Axis Cable is a custom-made cable used to connect the robot controller to external devices that provide additional axes of motion for the robot. These cables typically have a unique design based on the specific requirements of the robot system, including the type of external device being used, cable length, connector type, number of conductors, and shielding. The external axis cable allows the robot to communicate with the external device, enabling coordinated and synchronized movement. By using external axis cables, Fanuc robots can perform complex tasks with increased precision and accuracy, and can be customized for a wide range of industrial applications.