Final answer:
A PLC in a handling station, as described, is used to control a conveyor system. It automates the movement of items past assembly stations but does not directly monitor air pressure, measure temperature, or operate robotic arms without additional programming and equipment.
Step-by-step explanation:
The question pertains to the role of a Programmable Logic Controller (PLC) within a handling station that involves a conveyor belt system, similar to an assembly line for vehicle manufacturing. In such a context, a PLC is primarily designed to automate machinery and processes.
The correct answer here is that the PLC controls the conveyor. An example of this can be seen in Figure 3.1 where a conveyor belt moves the car past different assembly stations. This type of automation is akin to biochemical machines within a biological context, which perform specific actions as part of a larger system. The PLC does not typically monitor air pressure, measure temperature, or operate robotic arms in this specific function; however, it can be programmed to interface with sensors and actuators that do perform those tasks as part of the overall automation system.