National-instruments CAN 372139B-01 User Manual download pdf (Page 130)

Chapter 5 Automotive Diagnostic Command Set API for LabVIEW

Automotive Diagnostic Command Set User Manual 5-104 ni.com

UDS ReportSupportedDTCs.vi

Purpose

Executes the ReportSupportedDTCs subfunction of the UDS

ReadDiagnosticTroubleCodeInformation service. Reads all supported

Diagnostic Trouble Codes (DTCs).

Format

Input

DTC descriptor is a cluster that describes the DTC records the ECU

delivers:

DTC Byte Length indicates the number of bytes the ECU sends

for each DTC. The default is 3 for UDS.

Status Byte Length indicates the number of bytes the ECU sends

for each DTC’s status. The default is 1.

Add Data Byte Length indicates the number of bytes the ECU

sends for each DTC’s additional data. Usually, there is no

additional data, so the default is 0.

Byte Order indicates the byte ordering for multibyte items:

0: MSB_FIRST (Motorola) (default)

1: LSB_FIRST (Intel)

This VI interprets the response byte stream according to this description

and returns the resulting DTC records in the DTCs cluster array.

diag ref in specifies the diagnostic session handle, obtained from Open

Diagnostic.vi and wired through subsequent diagnostic VIs. Normally, it is

not necessary to manually manipulate the elements of this cluster.

1 2 ... 125 126 127 128 129 130 131 132 133 134 135 ... 300 301

No comments

National-instruments CAN 372139B-01 User Manual Page 130