National Instruments CAN 372139B-01 - Manual (Page 76)

Chapter 5 Automotive Diagnostic Command Set API for LabVIEW
Automotive Diagnostic Command Set User Manual 5-50 ni.com
Status is the DTC status. Usually, this is a bit field with the
following meaning:
Bit Meaning
0 testFailed
1 testFailedThisMonitoringCycle
2 pendingDTC
3 confirmedDTC
4 testNotCompletedSinceLastClear
5 testFailedSinceLastClear
6 testNotCompletedThisMonitoringCycle
7 warningIndicatorRequested
Add Data contains optional additional data for this DTC. Usually,
this does not contain valid information (refer to DTC descriptor)
success? indicates successful receipt of a positive response message for
this diagnostic service.
error out describes error conditions. If the error in cluster indicated an
error, the error out cluster contains the same information. Otherwise,
error out describes the error status of this VI.
status is TRUE if an error occurred.
code is the error code number identifying an error. A value of 0
means success. A negative value means error: the VI did not
execute the intended operation. A positive value means warning:
the VI executed intended operation, but an informational warning
is returned. For a description of the code, wire the error cluster to
a LabVIEW error-handling VI, such as the Simple Error
Handler.
source identifies the VI where the error occurred.
Description
This VI reads DTCs by status from the ECU memory. If you use the optional group of DTC
parameter, the ECU reports DTCs only with status information based on the functional group
selected by group of DTC.
For further details about this service, refer to the ISO 14230-3 standard.