Discussed the feasibility and superiority of CAN field bus being applied to belt weighing device.Weighting theory,measure principle and hardware circuit design of belt weighting device were explained (intensively.)Computation method for instantaneous flux and accumulated flux are given.Operational (principles) of the belt weighing devices network,which CAN bus responsible for communication,are (discussed.)Pointed out items which should be paid special attention to as well as problems may be (encountered) an...