What is PLC
Programmable Logic Controller (PLC)
is a digital computer used for the automation of various
electro-mechanical processes in industries. These controllers are
specially designed to survive in harsh situations and shielded from
heat, cold, dust, and moisture etc. PLC consists of a microprocessor which is programmed using the computer language.
The
program is written on a computer and is downloaded to the PLC via
cable. These loaded programs are stored in non – volatile memory of the
PLC. During the transition of relay control panels to PLC, the hard
wired relay logic was exchanged for the program fed by the user. A
visual programming language known as the Ladder Logic was created to
program the PLC.
PLC Hardware
The hardware components of a PLC system are CPU, Memory, Input/Output, Power supply unit, and programming device
Programmable Logic Controller (PLC) is a digital computer used for the automation of various electro-mechanical processes in industries. These controllers are specially designed to survive in harsh situations and shielded from heat, cold, dust, and moisture etc. PLC consists of a microprocessor which is programmed using the computer language.
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