www.vector.com/contact V1.0 | 2018-08 Case Study vDes Synchronizing Fault Memories Across Controller Boundaries The Diagnostic Event Synchronizer vDes is part of the Vector AUTOSAR solution MICROSAR. The Challenge Distribution of monitor functions for diagnostics on multiple controllers. In multi-controller systems, monitor functions for error detection are distributed among multiple microcontrollers. The different microcontrollers can be installed on the same or on different ECUs. However, only the master controller communicates with the diagnostic tester via Unified Diagnostic Services (UDS). If the different controllers calculate the error states exclusi- vely via the master controller, this would greatly reduce the performance of a distributed system. The monitor func- tions

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