The utility model belongs to the technical field of profibus field bus control, especially, one kind relates to the defeated coal belt feeder control system of redundant profibus bus a defeated coal belt feeder control system of redundant profibus bus, includes defeated coal belt feeder control box of redundant profibus bus and master control PLC, the defeated coal belt feeder control box of said redundant profibus bus includes the DSP treater and detects the control unit with defeated coal belt feeder that the DSP treater is connected respectively, and redundant profibus communication unit, LED report an emergency and ask for help or increased vigilance display element and defeated coal belt feeder fault detection unit, is connected through communication cable between redundant profibus communication unit and the master control PLC the utility model discloses simple structure, it is small, simple to operate, it is simple to work a telephone switchboard, and it is reliable to communicate by letter, integrates the degree height, and functioning speed is fast, and is intelligent competent, and loaded down with trivial details through the wiring of the present defeated coal belt feeder controlling means existence of the effective solution of redundant profibus communication unit ability, the cable consumption is big, and the scheduling problem is hanged down to the degree of integrating