National Instruments CAN 372139B-01 - Manual (Page 250)

Chapter 6 Automotive Diagnostic Command Set API for C
Automotive Diagnostic Command Set User Manual 6-86 ni.com
Output
dataOut
Returns application-specific data for this service.
len2
On input, len2 must contain the dataOut array length. On return, it contains the number
of valid data bytes in the dataOut array.
success
Indicates successful receipt of a positive response message for this diagnostic service.
Return Value
The return value indicates the function call status as a signed 32-bit integer. Zero means the
function executed successfully. A negative value specifies an error, which means the function
did not perform the expected behavior. A positive value specifies a warning, which means the
function performed as expected, but a condition arose that may require attention.
Use the ndStatusToString function to obtain a descriptive string for the return value.
Description
This function substitutes a value for an input signal or internal ECU function. It also controls
an output (actuator) of an electronic system referenced by the
ID parameter.
For further details about this service, refer to the ISO 15765-3 standard.