UDS_Vector.pdf

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UDS Overview 1 / 6 V1.01 | 2017-10-31

Diagnostic Overview Diagnostics ? Doctor Patient Diagnostics is to  determine, check and classify symptoms of a system  with the purpose to get an overall picture 2

Diagnostic Overview Diagnostic Goal General Goal of Diagnostics:  Continuous supervision of the vehicle and precise failure recognition in order to have a one-stop repair/maintenance at minimum cost and time. 3

Agenda  Diagnostic Overview Diagnostic Protocol UDS Services Overview Diagnostic Session Control Security Access Read/Write Data By Identifier Fault Memory Communication Method in Diagnostics Review/Summary Vector Diagnostic Solution Solution Tool-chain Summary 4

Diagnostic Overview Vehicle Network Diagnostic Tester communication via diagnostic protocol  A “diagnostic protocol” is necessary for communication between an ECU and a diagnostic tester.  Diagnostic protocols: ISO 14230/ISO 15031/ISO 15765/ ISO 14229 …  Diagnostic protocol defines diagnostic request/response rules, ECU handling behavior for request, and content of request/response message. 5

Diagnostic Overview UDS Term UDS Application OEM specific data UDS Standard Standardized Data Standardized Data Communication Services Communication Services  Unified Diagnostic Services  ISO 14229-1 6

Diagnostic Overview UDS Range  ISO 14229/2013: Unified diagnostic services (UDS) -1 Specification and requirements -2 Session layer services -3 Unified diagnostic services on CAN implementation (UDSonCAN) -4 Unified diagnostic services on FlexRay implementation (UDSonFR) -5 Unified diagnostic services on Internet Protocol implementation (UDSonIP) -6 UDS on K-Line implementation (UDSonK-Line) -7 UDS on local interconnect network (UDSonLIN) 7

Diagnostic Overview Network Example r e t s e T Gateway Network CAN High Speed Typical Network Bit Rate 0,5 MBit/s CAN-FD 2 MBit/s DoIP 100 MBit/s FlexRay 10 MBit/s LIN MOST 8

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