Local network with redundancy properties having a redundancy manager
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United States of America Patent
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Aug 6, 2002
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app pub date -
Sep 11, 2000
filing date -
Mar 11, 1998
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Abstract
An Ethernet network with redundancy properties and an associated method for detecting and eliminating errors in the network. A redundancy manager (6), which is connected to the line ends of the network (1), checks the status of the network by transmitting and receiving test telegrams. If there is an interruption in the network, the redundancy manager (6) connects the line ends (7, 8) and thereby ensures continued network operation within milliseconds. The network has a loop structure that is less expensive than a dual bus structure even though fast media redundancy is ensured.
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