Which tag is referred to as a real-world device control instruction?

The tag referred to as a real-world device control instruction is OTE, which stands for "Output Energize." This instruction is used within a programmable logic controller (PLC) program to directly control real-world devices, such as motors, solenoids, or lights. When the conditions for OTE are met, this instruction energizes the associated output, allowing the PLC to actively control the device based on the logic defined in the program.

In a PLC environment, OTE plays a critical role in output management, giving users the ability to turn on or off physical devices as needed based on the state of input conditions and overall logic in the control system. It is essential for creating responsive automation systems that interact with the physical world.

The other options represent different types of control or input instructions but do not serve the specific purpose of directly controlling an output device.