PLC CONTROLLER IN THE INDUSTRIAL AUTOMATION INDUSTRY

Industrial automation system considers PLC controller to be its brain which provides relay control, motion control and input-output process control. The exceptional functional features offered by these controllers makes them a special purpose digital computer in industries as well as in many control system applications.
Some of the many alluring features which make the PLC controllers the main component of any industrial automation system is:
·         Ease of handling
·         Low power consumption
·         They are re-programable
·         Sequential or position control
·         Storing procedures are easier
·         Is capable of handling complex logic operations without the need of a complex wiring
·         Provide unlimited switching cycles as they have solid state switches
A PLC or a Programable control logic basically consists of 3 modules:
·         CPU Module: It comprises of the memory and central processor which performs all the computations and process data. It accepts the inputs and produces outputs.
·         Power Supply Module: The power required by the CPU and I/O modules to convert AC power to DC power is supplied by this module.
·         I/O Modules: The sensors and actuators need to be connected to the system which senses temperature, pressure, flow etc. This module is needed to connect those sensors and actuators.
These logic controllers are in fact amazing and are gaining more popularity with each day. They monitor and control building systems and production processes. As these controllers find their applications in the harsh industrial environments they are designed in such a way that they withstand extreme conditions like temperature, pressure, vibrations and noise.
The automation industry is witnessing an impressive growth of these logic controllers for a variety of applications. They have been continuously evolving owing to their exceptional functionalities like flexibility, ease of use, more memory, high speed and in-built wireless components. The processors of the PLC have proved their supremacy by fighting off all the challenges. They continue to be a mainstay in the automation world.

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