| 摘要 |
A description is given of an arrangement for compensation of ground offset in a data bus system comprising a plurality of communication devices (2, 10) which are each supplied with an operating voltage (U0) by a voltage source (4; 14), are connected to ground (G1); G2) and have a data bus connection (6; 12) via which they are connected to a data bus line (8). The special thing about the invention is that between operating voltage (U0) and ground (G2) at least one voltage dividing device (R3, R6) is connected whose output is coupled to the data bus connection (12) of at least one communication device (10) and whose voltage dividing ratio is selected such that an offset of the ground (G2) of the communication device (10), whose data bus connection (12) is coupled to the voltage dividing device (R3, R6), is in essence compensated compared to ground (G1) of another communication device (2).
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