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What is the similarity and what is the difference between relays and PLC?
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Answer Posted / sujith kumar
A relay is a switch which gets ON/OFF with respective to the input signal of it.It can be NC or NO depending upon the application.
A PLC is a Microcontroller which has a memory and Relay(s) Controller in which a Program(Our Application) is stored and it will analyse our application and send signal to relay(s).
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