Memory includes both ROM and RAM memories. The Processor is responsible for doing all the necessary computations and data processing by accepting the inputs and producing appropriate outputs. PLC Architecture CPU Module CPU Module of PLCĬPU module consists of a central processor and its memory. Every PLC system needs at least these three modules: PLCs are capable of monitoring the inputs continuously from sensors and producing the output decisions to operate the actuators based on the program. PLC is invented to replace traditional control panels whose operations depend on the electromagnetic logic relays that are based on timers in industrial control systems. Programmable Logic Controller (PLC) What is a PLC System?
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