What meaning of Progamming Logic cONTROL?

Answer 1

From Wikipedia...

A Programmable Logic Controller, PLC, or Programmable Controller or Logic Box is an electronic device used for automation of industrial processes, such as control of machinery on factory assembly lines. Unlike general-purpose computers, the PLC is designed for multiple inputs and output arrangements, extended temperature ranges, immunity to electrical noise, and resistance to vibration and impact.

Answer 2

A special purpose computer to control everything. These use computer programs (software) which can usually be downloaded for new facilities or to overcome reported problems.