NOUFERROUS METALLURGICAL EQUIPMENT

Modbus protocol is a completely open communication protocol， which is widely used in various control systems and intelligent instrumentation. Combined with the actual on-site situation of the smelter， Modbus protocol is applied to the whole process monitoring of smelting off-gas， and a communication network based on Modbus is built to link the DCS control system， PLC system and intelligent instrumentation of the whole plant to each other， realizing interconnection and interoperation. Related data of off-gas are analyzed and processed， and these data are used to realize the whole process closed-loop control of off-gas. The proposed technology provides data and information support for the automation and information construction of the smelter， and it is very important for improving the automation level of off-gas monitoring in non-ferrous metallurgy enterprises.