ENGINE AND MACHINES PROGRAMMABLE LOGIC CONTROLLERS

In most of the power generation industry. ranging from automobile food packing, oil industry and banking, programmable are used for their day to day operations in order to expand and enhance production operations.In this project some aspect of these powerful and versatile automation tools would be illustrated, It will also bring to mind the basis of programmable controllers from their operation to their vast range of application.The internal configuration of the design philosophy behind their creation with a brief overview of their evaluation would also be expatiated. It will also be compared to other types of controls to highlight their benefit and backdrop as well as where it can efficiently be operated.
Programmable logic controllers are also called programmable controllers or PLC which are also solid members of the computer family using integrated circuit instead of electro - mechanical devices to implement control functions.They are capable of storing instruction such as sequencing ,timing,counting, arithmetic data manipulation, other control logic.industrial machines and processors,




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                                        3*                                          * 4


                                                       
                                                     
                                                              2      
                                                       5            6


Fig.3.0 conceptual diagram of a plc.
(the arrow moves from 1).

1  programmable machine,
2 programmable controller
3 measure
4. control
5 field input
6 field output.