Which button on the SOP Panel is designated for cycle start?

The green button on the SOP Panel is designated for cycle start because it traditionally signifies "go" or "run" in many industrial control systems. This color coding is widely used to indicate safe and approved actions, such as starting the operation of machinery or processes.

In contrast, other buttons may serve different purposes; for instance, the red button typically represents an emergency stop function, which is designed to halt operations immediately in case of an emergency. This color designation is consistent across many industries, providing a universal understanding of button functions to operators. Therefore, utilizing the green button for cycle start enhances safety and efficiency, allowing operators to easily identify actions that initiate machine cycles.