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    • 2. 发明公开
    • BUSKNOTEN UND BUSSYSTEM SOWIE VERFAHREN ZUR IDENTIFIKATION DER BUSKNOTEN DES BUSSYSTEMS
    • 用于识别总线系统总线节点总线节点和总线的系统和方法
    • EP2948857A1
    • 2015-12-02
    • EP14701189.4
    • 2014-01-23
    • Smiths Heimann GmbH
    • RIEDEL, Ulrich
    • G06F13/40H04L12/40
    • H04L12/40019G06F13/364G06F13/4068G06F13/4086G06F13/4282H04L12/40013H04L12/40078H04L2012/40273H04W4/021H04W76/10H04W84/20
    • The invention relates to a bus node (BK; BK-M, BK-1, BK-2, BK-3) having a communication unit (TRX; TRX-M, TRX-1, TRX-2, TRX-3), which can be coupled for communication to at least one data line (CAN_L, CAN_H) of a bus (CB), a bus node control system (BK-CTRL), which is coupled operationally to the communication unit, and an identification unit (200; 200-M, 200-1, 200-2, 200-3), which is coupled operationally to the bus node control system and has a two-port network (100; 100-M, 100-1, 100-2, 100-3), which can optionally be switched instead of a direct connection between an IDT input (E) and an IDT output (A) for an identification line (IDT) and vice versa, wherein the two-port network is configured in such a manner that when a first bus node (BK-1) is series-connected to at least one second bus node (BK-2, BK-3) for the bus node control system (BK-CTRL-1), the position of the first bus node can be identified using a comparison of the voltage at the IDT input (E) with a predefined threshold value (Us) independently of the number of second bus nodes (BK-2, BK-3). The invention also relates to a bus system having at least two such nodes and to a master- and/or slave-side identification and identification allocation method for unique addressing of the bus nodes. With the expansion of a bus system proposed here and the corresponding expansion of the associated bus nodes, a flexible possibility is created, which is extremely simple and cost-effective to produce and makes data exchange possible between different components of a technical system or device, such as an x-ray inspection system, that are connected as bus nodes to the bus.