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Topic under  PLC (Programmable Logic Controller)
Source: elektra-ku.lt 
File size: 5.3 MB
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Last download on: Sat Nov 18, 2017 08:44:13 PM
Short Desciption:
Programmable logic controllers, also called programmable controllers or PLCs, are solid-state members of the computer family, using integrated circuits instead of electromechanical devices to implement control functions. They are capable of storing instructions, such as sequencing, timing, counting, arithmetic, data manipulation, and communication, to control industrial machines and processes.

In this chapter, we will explain the procedures for selecting the proper programmable controller for an application. We will explain how to determine application requirements, as well as how to evaluate PLC capabilities. We will also provide several guidelines for defining and configuring the control system, along with other factors that will affect the final selection. After finishing this chapter, you will be able to select the PLC system that is right for your application. As you have seen in this book, programmable controllers are available in all shapes and sizes, covering a wide spectrum of capabilities. On the low end are “relay replacers,” with minimum I/O and memory capability. At the high end are large supervisory controllers, which play an important role in hierarchical systems by performing a variety of control and data acquisition functions. In between these two extremes are multifunctional controllers with both communication capabilities, which allow integration with various peripherals, and expansion capabilities, which allow the product to grow as the application requirements change.
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    Leave comment :



    Posted by Mohammad Eljarm
    Sat Nov 09, 2013 08:10:05 PM

    I'm EEE,I've been working in oil refining company and I'd like to know theory of running PLCs specialy in industrial of oil

    Posted by madhu
    Tue Jul 17, 2012 01:41:41 PM


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