|
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 on CAN FD.vi or Open Diagnostic on IP.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. |
|
group of DTC specifies the group of Diagnostic Trouble Codes to be cleared. The following values have a special meaning, and you can specify them through a ring control:
| 0x0000 | All powertrain DTCs | | 0x4000 | All chassis DTCs | | 0x8000 | All body DTCs | | 0xC000 | All network-related DTCs | | 0xFF00 | All DTCs |
|
|
error in is a cluster that describes error conditions occurring before the VI executes. If an error has already occurred, the VI returns the value of the error in cluster to error out.
 | status is TRUE if an error occurred. This VI is not executed when status is TRUE. |  | 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. |
|