Bell type furnace control system adopts the distributed control system, it is a combination of computer technology, communication technology, display technology, and process control technology of the new control system, the system can easily achieve a variety of complex control function and management function, the system realizes the management concentration and control dispersion, fundamentally improve the reliability of the system, and can also satisfy the further expansion of the production scale. This system is an open structure, mainly including: the upper monitor management unit, communication network(Ethernet +profibus-dp), the basic control unit(S7-1500), etc.