National-instruments CAN 372139B-01 User Manual download pdf (Page 61)

Chapter 5 Automotive Diagnostic Command Set API for LabVIEW

ControlDTCSetting.vi

Purpose

Executes the ControlDTCSetting service and modifies the generation behavior of selected

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 2.

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)

The DTC descriptor is given here as a parameter basically to convert the

group of DTC parameter to a binary representation according to DTC

Byte Length and Byte Order.

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.

data in specifies application-specific data that control DTC generation.

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 300 301

No comments

National-instruments CAN 372139B-01 User Manual Page 61