Which component of a PLC is responsible for executing the logic program?

The processor is the heart of a Programmable Logic Controller (PLC) and is responsible for executing the logic program. It interprets the instructions written in the form of a control program, which typically involves a sequence of operations to be performed based on the inputs received from the input modules. The processor carries out the computational logic required, makes decisions based on this logic, and then sends the necessary commands to the output modules to activate or deactivate devices connected to the PLC.

In this context, the processor performs essential functions such as scanning input states, executing the control program, and updating output states in a continuous loop to ensure the automated process operates as intended. The overall effectiveness of the PLC in automated control applications relies heavily on the capability and efficiency of the processor in handling these tasks.