The utility model belongs to the technical field of the profibus field bus control technique and specifically relates to a redundant profibus bus plough coal ware control system is related to. A redundant profibus bus plough coal ware control system, includes redundant profibus bus plough coal ware control control box and master control PLC, redundant profibus bus plough coal ware control control box include the DSP treater and lift the control unit, detecting element, LED with the plough coal ware that the DSP treater is connected respectively and report an emergency and ask for help or increased vigilance display element and redundant profibus communication unit, be connected through main communication cable between redundant profibus communication unit and the master control PLC. The utility model discloses small, simple to operate, the wiring is simple, communication is reliable, integrate the degree height, functioning speed is fast, intelligent competent, can solve effectively through redundant profibus communication unit that the wiring that present plough coal ware controlling means exists is loaded down with trivial details, the cable consumption big, the low scheduling problem of the degree of integrating.