Abstract:The electromagnetic isotope separator EMIS-170 is the only one large-scale electromagnetic isotope separator in China. The computer control system of electromagnetic isotope separator mainly uses the Siemens TIA Portal software development, for monitoring electromagnetic isotope separator of the entire process system and equipment operation parameters and the state, provide the necessary chain function, prevent operator"s wrong operation, according to analog signals, the switch quantity monitoring alarm status. Isotope electromagnetic separator automation control system of separator system decentralized control, centralized management, operation, improve the adjustment precision of the important electric parameters of separator, effectively improve the isotope abundance of products.