A Novel Self-tuning Zone PID Controller for Temperature Control via a PLC code

S7-1200 with Tia Portal technology has become a Standard function of distributed controlsystems. Self-Tuning methods belong to Programmable Controllers (PLC) techniques. PLCtechniques contain software packages for advanced control based on mathematical methods. S7-1200 tools are designed to increase the Process Capacity, yield, and quality of products. Most ofthe present time digital industry regulators and PLCs are provided with some kinds of the SelfTuning constant algorithms. Practical part of the present paper deals with the design of thecontrol systems, which contain Self Tuning regulators and Zone PID features. A Control Systemwith PID Self Tuner is designed by Siemens along with visualization in Tia Portal to do so. Thereis a description of an implementation of the PID regulator as a function block, which can also beused for extension Zone PID control functions. Control Systems for relay and moment Self Tunerwith visualizations in Tia Portal are also designed and tested in ZAFAR Steel Plant, BONAB,IRAN.