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[DoCAN] Vehicle Diagnostic Communication Part 50 [UDS 11]

Review of P2 time.P2 time is 1 secondExplanation of P2* timeP2* time is 5 seconds.When the off-board tester receives NRC$78, it switches from P2 time to P2* time.When the off-board tester receives NRC$78 again, it extends P2* time from there.

2023.01.03

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[DoCAN] Vehicle Diagnostic Communication Part 49 [UDS 10]

Click here for back issues.Introduction.Explanation of ISO 14229, UDS.I will explain PositiveResponse and NegativeRespon...

2023.01.02

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[DoCAN] Vehicle Diagnostic Communication Part 48 [UDS 9]

Explains the session as defined in the ISO for DiagnosticSessionControlRequest message of DiagnosticSessionControl.Response message of DiagnosticSessionControl.P2 time and P2* time of the relevant session can be obtained.

2023.01.01

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[DoCAN] Vehicle Diagnostic Communication Part 47 [UDS 8]

There are five services to be realized by UDS simulationDiagnosticSessionControl.SecurityAccess.TesterPresent.ReadDataByIdentifier.WriteDataByIdentifier.When explaining the request and response messages, the CAN frame is not explained.I will only explain the ISO 14229-1 layer and not the ISO 15765-2 layer.

2022.12.31

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[DoCAN] Vehicle Diagnostic Communication Part 46 [UDS 7]

Presentation of the overall structure of the USD simulation.A-COMSTACK is AUTOSAR r3.x series and OpenSAR is AUTOSAR r4.x series.Therefore, illegal construction.

2022.12.30

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[DoCAN] Vehicle Diagnostic Communication Part 45 [UDS 6]

Click here for back issues.Introduction.Explanation of ISO 14229, or UDS.This time, the open source AUTOSAR, which is di...

2022.12.29

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[DoCAN] Vehicle Diagnostic Communication Part 44 [UDS 5]

Routine explanation.Mainly used for functions such as those used during development.Explanation of Upload/Download.A group of services for data transfer that can also compress and encrypt data.

2022.12.28

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[DoCAN] Vehicle Diagnostic Communication Part 43 [UDS 4]

Stored Data Transmission Description.Getting and clearing DTC and freeze data.Description of Input/Output Control.I/O control of ECU.While convenient, this service can be dangerous depending on the condition of the vehicle,so it is necessary to consider safety functions.

2022.12.27

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[DoCAN] Vehicle Diagnostic Communication Part 42 [UDS 3]

Diagnostic services fall into six categories of functional units.Diagnostic and Communications Management explained.Session, Security, and Communications Control.Data Transmission Description.Read/write data by memory address and DID.

2022.12.25

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[DoCAN] Vehicle Diagnostic Communication Part 41 [UDS 2]

P2 time is explained with figures.P2* timeout will be explained later.S3 time is explained with figures.S3 time is explained in detail.It is difficult if you don't know the various services.

2022.12.24

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