Which of the following is an example of a G-code function?

The example of a G-code function relates to specifying the operational commands that control CNC (Computer Numerical Control) machines during machining processes. G-code is a language used to instruct CNC equipment, allowing it to perform precise movements and operations.

When it comes to setting machine parameters, this explanation encompasses various instructions needed for the CNC machine to configure itself for a specific task. This includes defining the speed, feed rate, and tool path directions, all of which are expressed in G-code. For instance, G-codes like G0 and G1 specify rapid positioning and controlled movement, respectively, and are pivotal for setting up how the machine should operate during a machining cycle.

The other options reflect different aspects of machine operation but do not represent G-code functions specifically. Turning on the machine is a manual operation rather than a programmable instruction, while recording measurements pertains more to feedback and inspection processes outside of G-code. Calibrating tools is typically an initial setup process and may not require G-code but rather mechanical adjustments or initial programming.