Chapter 5
Using the SCXI-1125
©
National Instruments Corporation
5-13
Follow the general programming flowchart or open an example to build a
basic virtual channel. You can use property nodes in LabVIEW to control,
configure, and customize the NI-DAQmx task and SCXI-1125. To create a
LabVIEW property node, complete the following steps:
1.
Launch LabVIEW.
2.
Create the property node in a new Virtual Instrument (VI) or in an
existing VI.
3.
Open the block diagram view.
4.
From the
Functions
tool bar, select
NI Measurements
,
DAQmx - Data Acquisition
, and select the type of property node you
wish to configure.
5.
Use the
ActiveChans
box to specify the channel(s) you want to
configure. If you want to configure several channels with different
properties, separate the lists of properties with another
ActiveChans
box, and assign the appropriate channel to each list of properties.
6.
Right-click
ActiveChan
and select
Add Element
. Left-click the new
ActiveChan
box. Navigate through the menus and select the property
you wish to define.
7.
You must change the property to read or write to either get the property
or write a new value. Right-click the property, go to
Change To
, and
select
Write
,
Read
, or
Default Value
.
8.
After you have added the property to the property node, right-click
the terminal to change the attributes of the property, add a control,
constant, or indicator.
9.
To add another property to the property node, right-click an existing
property and left-click
Add Element
. To change the new property,
left-click it and select the property you wish to define.
Note
Refer to the
LabVIEW Help
for information about property nodes and specific
NI-DAQmx properties.
