What type of feedback do limit switches provide in CNC machines?

Limit switches are critical components in CNC machines because they are designed to detect the position of moving parts, ensuring that they do not exceed their designated travel limits. When a moving component, such as a cutting tool or a workpiece, reaches a predetermined position, the limit switch is activated. This activation can stop the movement of the component or trigger other safety features, thereby preventing potential damage to the machine or the workpiece.

The feedback provided by limit switches is crucial for maintaining operational safety and precision within the CNC system. This is why the indication of the machine's positional limits is the correct information that limit switches provide. They ensure that the machine operates within safe and effective boundaries, enhancing both performance and safety.

In contrast, information on spindle speed, data on the type of tools used, and thermal readings pertain to different aspects of CNC operation and do not relate to the primary function of limit switches, which focuses solely on the positional limits of the machine's components.