Measurement Computing UL for NI LabVIEW - Manual (Page 77)

Universal Library Virtual Instruments (VIs) Digital I/O VIs
Context Data structure containing information from a background operation. Some of the
information included is the board number, the data array, the array size, and the
initial status of the background operation.
Follow the steps below when wiring this VI:
1. DInScBg.VI starts a background operation.
2. GetStatus.VI checks for completion (boolean output called "Running").
3. StopBg.VI terminates the operation, if not already done, and frees memory aliases.
4. Data output from the background operation is passed to GetStatus.VI and
StopBg.VI via Context, and can be wired from one or both of them for
intermediate or final actions, respectively.
The demo VIs illustrate this process effectively.
ErrCode Error code returned from the Universal Library. Zero if no error occurred. Use the
ErrMsg VI to convert ErrCode into a readable string.
77