Answer Posted / a.muthukumar
PLC is a Programmable Logic Controller.PLC is having CPU
and Input module and output module.CPU reads the status of
inputs ,Executes the program logic and Writes the status of
outputs.PLC having some programming languages like Ladder
logic,Function Block diagram,Structured text,Sequential
function chart.PLC is having soft wiring program,If is
required to change the logic is vary easy compare to Hard
wiring.
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