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What is the difference between Remote Terminal Unit and Programmable Logic Controllers?
Goputwad
Generally speaking -- PLC's are meant to be reprogrammed, possibly with fairly high level languages, RTU's are meant to be changed out when there's a problem (but may also be reprogrammable). RTU's are environmentally rugged. PLC's are more electrically/industrially rugged. Both are controllers. Both are meant to do something without required direct supervision. Both usually have CPU's, although I'm sure there is nothing stopping you from having an RTU whose functional logic is determined strictly from electronics.
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