Description – National Instruments CAN 372139B-01 User Manual

Page 39

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Chapter 5

Automotive Diagnostic Command Set API for LabVIEW

© National Instruments Corporation

5-13

Automotive Diagnostic Command Set User Manual

Description

Data output from diagnostic services (for example,

ReadDataByLocalIdentifier.vi

) is

usually a byte stream of binary data. If you have a description of the data output (for example,
byte 3 and 4 are engine RPM scaled as .25 *

×

RPM in Motorola representation), you can

use Convert to Phys.vi to extract the physical value from the byte stream by filling an
appropriate type descriptor cluster.

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