Answer Posted / shanmugaraj s

plc is programble logic controller , plc main use of real
tmie relay and timier and counter is replacedto the fully
programing use. the main application of all industry
automation is using plc ladder diagram.convery control,
water filling control , counting application , fully
automation process.. plc advantage is flexiblity,compact
size, program is very easy, easily control the all component

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