ABSTRACT
With the development of the computer control technology ， the traditional relay control
technology must be replaced necessarily by the programmable logic controller （PLC ） control
technology which generates based on computer technology，and PLC has excellent performance
what makes the temperature control system with PLC technology become more economic，more
efficient，more stable and easily maintain．
This thesis introduces a design technique of the temperature control system with SIMATIC S7
－200 series PLC，details the hardware design and the software design of the system．This control
system adopts PC&PLC master－slave control construction，constitutes an economic and reliable
industrial heating furnace temperature control system．The furnace temperature control system is a
large inertia system ， generally uses the PID algorithm to control ， and uses ladder diagram
programming language of PLC to programme，in order to carry out the automatic control of the
heating furnace work process ． Using the configuration software KingView to design the upper
computer interface to monitor the control system and real-time sample and process．It is able to get
a friendly user interface，is a real-time temperature control system which has moderate application
value．
After the design，the system has a good stability，a high precision and a strong robustness．
【Key words】The heating furnace PLC PID Temperature control The upper computer
