Basics of Plc Ppt

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  BASICS OF PLC PreparedBy: JATIN PUROHIT GUIDED BY: MR. SHAILESH JIVANI  Contents  History  Introduction  Difference between PLC and DCS and PC  Data flow overview  Major components  PLC scan cycle  PLC communication  PLC Programming language  Ladder logic  Advantage and disadvantage  Application  History of PLC  Devloped to replace relays in late 1960’s.  In 1970’s PLC become most common choice for manufacturing controls  Plcwas first design and developed by modiconas a relay replacer for general motors  INTRODUCTIONWhat is PLC?  PLC is a continuously monitor the status of devices connected as inputs. Based upon a user written program ,stored in memory it control the status of devices connected as output  A programmable logic controller (PLC) is an industrially computer-based unit that performs discrete or continuous control functions in a variety of processing plant and factory environments.

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Sep 22, 2019
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