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Programmable Logic Controllers (PLCs)

Programmable Logic Controllers (PLCs) are the major components in industrial automation and control systems. The controlling nature of PLC ranges from simple- push button switching to a single motor to several complex control structures. PLC programming is an important task of designing and implementing control application depending on customers’ need. A PLC program consists of a set of instructions either in textual or graphical form, which represents the logic to be implemented for specific industrial realtime applications. A dedicated PLC programming software comes from a PLC hardware of specific manufacturer that allows entry and development of user application code, which can be finally downloaded to the PLC hardware. This software also ensures Human Machine Interface (HMI) as a graphical representation of variables. Once this program gets downloaded to the PLC and if the PLC is placed in Run mode, then the PLC continuously works according to the program. Before going to the program of the PLC, let us know the basics of the PLC programming tutorial and its basic concepts.
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