Design of a Neural Network Function Block for Insertion into the Function Block Library of a Programmable Logic Controller

This paper shows the design of a function block containing a neural network to be inserted into a function block library of a programmable logic controller to be used in an industrial process control application. First, the neural network was designed and trained based on the previous behavior of a proportional, integral and derivative controller; then it was implemented in a function block, and inserted into the function block library of a programmable logic controller; finally the behavior of a proportional, integral and derivative controller was compared with another based on a neural network.