Most PLCs consist of an assortment of modules (input and output), a CPU, a power supply, and a rack in which to mount the modules.

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PLCs (Programmable Logic Controllers) are modular devices used in industrial automation and control systems. They typically consist of various modules for input and output (I/O) operations, a central processing unit (CPU) for executing control instructions, a power supply to provide the necessary power for the system, and a rack or chassis where these modules are mounted and interconnected. This modular design allows for flexibility and scalability in configuring control systems to meet specific application requirements.

Most PLCs Consist of an Assortment of Modules (Input and Output)