The application of SIEMENS PLC's different way of communication to the vacuum refining furnace control

This paper presents the application of SIEMENS PLC,which is combined with the industrial control Computer,to the automatic control of mechanical system in the industrial field.Different communication,such as Industrial Ethernet,Profibus DP,Distributed I/O,Profibus PA and RS232 and diversified products by different producers are adopted respectively in this experiment.