Which component in PLC allows the user to input commands and operational parameters?

The input module in a Programmable Logic Controller (PLC) is essential for receiving signals from input devices, such as sensors, switches, and other control devices. This component translates the physical conditions and user commands into signals that the PLC can understand and process. As operators input commands and operational parameters, the input module converts these signals into digital data that the controller can utilize to execute programmed control strategies.

In a PLC system, the input module serves as a critical interface between the user inputs and the controller by monitoring the input signals and sending them to the central processing unit (CPU) for further action. This makes the input module foundational in setting up the operational context for the PLC to function effectively based on user-defined commands and parameters.