Distributed Temperature Control System Based on S7-300PLC and Configuration Software

Temperature control in the heat exchange processes has characteristics of large time delay and inertance,this paper uses heat exchanger simulation equipment in laboratory,designs and develops a distributed temperature control system based on S7-300 PLC,and achieves the remote control in the configuration software monitor environment. This temperature control system has ideal static and dynamic performances. Heat level,water temperature and water flow are measured by the sensors and transferred to the PLC as analog input,after the data processing and the corresponding control operation,the result outputs from the analog output module to the actuator. The system has friendly interface,easy operation,combines the theoretical knowledge and engineering practice well,and it can strengthen the ability of the application.