Bus system and method for achieving a stable bus redundancy

摘要

A bus system interconnected to a coupling module to form a ring structure for reasons of redundancy, whereby a linear structure of the bus (1) is achieved through a partition (9) in the coupling module (8). A monitoring device (11) contained in the coupling module (8) monitors the bus (1) for like conditions on both sides of the partition (9), which is closed by a controllable switching device (10) in the event of a discrepancy. According to the bus system, and method of detecting discrepancy in the bus, an especially simple and stable bus redundancy is achieved in that the bus (1) is provided with cables for supplying power to the bus stations (2 . . . 6) and in that the supply voltage is monitored on the cables on both sides of the partition (9).