Patent ID: 9634859
Date: 2017-04-25
CPC Classifications: H04L

Claim:
1. A method for detecting a defective node which is connected to a bus, comprising: incrementing, by a node, an internal error counter in a normal operating state of the node when an error is detected, switching the node to an isolated operating state of the node, in which the node does not exchange any messages via the bus if the internal error counter of the node exceeds a predetermined error threshold value, switching the node from the isolated operating state to the normal operating state when a condition is fulfilled, detecting the switching of the node from the isolated operating state to the normal operating state as state change, wherein detecting the switching of the node from the isolated operating state to the normal operating state as state change comprises incrementing a state change counter if a state change of the node from the isolated operating state to the normal operating state is detected; and detecting the node as being defective if a rate of the detected state changes exceeds an adjustable change rate or a number of detected state changes exceeds an adjustable state change threshold value.