Table 5-4. Programming A Task In Labview - National Instruments Module SCXI-1125 User Manual

Chapter 5 Using the SCXI-1125
Flowchart Step
Create Task in DAQ Assistant
Create a Task
Programmatically (optional)
Create AI Channel (optional)
Adjust Timing Settings
(optional)
Configure Channels (optional)
Start Measurement
Read Measurement
Analyze Data
SCXI-1125 User Manual

Table 5-4. Programming a Task in LabVIEW

Create a
DAQmx Task Name Constant
Controls»Modern»I/O»DAQmx Name Controls subpalette,
right-click it, and select New NI-DAQmxTask (MAX...).
DAQmx Create Task.vi
and configured your task using the DAQ Assistant. However, if
you use it in LabVIEW, any changes you make to the task will not
be saved to a task in MAX.
DAQmx Create Virtual Channel.vi
to change to a channel, click AI Voltage and select the type of
analog input you want.—This VI is optional if you created and
configured your task and channels using the DAQ Assistant. Any
channels created with this VI are not saved in the DAQ Assistant.
They are only available for the present session of the task in
LabVIEW.
DAQmx Timing.vi
optional if you created and configured your task using the DAQ
Assistant. Any timing settings modified with this VI are not
saved in the DAQ Assistant. They are only available for the
present session.
DAQmx Channel Property Node, refer to the
Channel Property Node in LabVIEW
information. This step is optional if you created and fully
configured the channels using the DAQ Assistant. Any channel
modifications made with a channel property node are not saved
in the task in the DAQ Assistant. They are only available for the
present session.
DAQmx Start Task.vi
DAQmx Read.vi
Some examples of data analysis include filtering, scaling,
harmonic analysis, or level checking. Some data analysis tools
are located on the Functions»Signal Analysis subpalette and on
the Functions»All Functions»Analyze subpalette.
5-10
VI or Program Step
located on the
—This VI is optional if you created
(AI Voltage by default,
(Sample Clock by default)—This VI is
section for more
Using a DAQmx
ni.com