An open common graphical feeder automation fault processing control logic scheme is proposed based on the process automation theory and realized by IEC 61131-3 standard. The logic models and technical features of fault location， insulation and recovery（FLIR） are discussed. A series of function block diagram（FBD） models for fault processing are developed by the structured text（ST） language. The correctness of the logic functions is verified by simulation and laboratory tests that also show that the feeder fault processing method proposed is open， smart， reliable and practical.