Which of the following is NOT a mode controlled by the key switch?

The key switch is an essential part of controlling various operational modes of a system, particularly in machinery and systems that require different levels of access or operational capabilities. In this context, the modes controlled by the key switch are typically fundamental to the safe and effective operation of the device.

The 'Teach' mode is often used to program or instruct the system on various tasks. The 'Play' mode allows the system to perform its predefined functions or tasks based on the programming it has received. 'Remote play' generally enables the operation from a distance, utilizing remote access capabilities.

In contrast, 'Setup' mode typically does not rely on the key switch for activation. This mode is often more associated with configuring the system or changing its settings, which may require different access controls or even elevated permissions that go beyond what a simple key switch can provide. As a result, 'Setup' is not considered a mode that is controlled by the key switch in the same manner as the other options listed. Understanding the operational delineations among these modes showcases how systems ensure safe and effective functionality through access control.