The main objective of the present work of thesis was: laying plans constructing and installing a prototype with programmable logic controller to automate the passage of time of functioning of four electric pumps. In the present investigation, firstly, a revision of the at one PLC has been done (ladder and BDF); from now on a sketch of the prototype automated of four electric pumps, where it was described to each one of his main components came true; straightaway, came true the design and simulation of the electric circuit in the programmable logic controller (PLC), with the aim of verifying activation and deactivation of the physical exits of the PLC according to what's programmed, this in turn allowed determining the quantity of physical receipts and expenditures that were used in the PLC; from now on, the relation between the state of every an one belonging to the physical exits of the...