Which of the following is a component of the SOP?

The Cycle Start button is indeed a component of the Standard Operating Procedure (SOP) in CNC operations. Its primary function is to initiate the programmed sequence of operations after all necessary preparations have been completed, including setting the parts and tools as required.

The Cycle Start button allows the operator to begin the machining process, which is a key step in executing the program written for the CNC machine. This component is crucial because it translates the prepared set of instructions into action, making it an essential part of the SOP for ensuring that operations are performed in the correct sequence and under the expected conditions.

While the other components mentioned play significant roles in the operation of a CNC machine, they do not directly serve as initiating points of the machining cycle. For example, the JOG key is used for manual movement of the machine's axes, the Reset Button is typically for clearing errors or returning the machine to a safe state, and the Mode Display provides information about the current functioning mode of the CNC machine. However, none of these components directly trigger the beginning of the machining operation as the Cycle Start button does.