What is the main function of the CPU in a PLC?
A. To provide power to the PLC
B. To store the program
C. To execute the program and control the input and output devices
D. To communicate with other PLCs
Answer:C
What is the main function of the CPU in a PLC?
A. To provide power to the PLC B. To store the program C. To execute the program and control the input and output devices D. To communicate with other PLCs
Explanation: The Central Processing Unit (CPU) of a PLC is responsible for executing the program and controlling the input and output devices. It is the “brain” of the PLC and coordinates all the operations of the system.