I am trying to configure my SCXI-1540 card for excitation voltage and frequency using MAX - but it is not giving me that option when I click on the card and then properties, am I looking in the wrong place?

[CytecHDG-rwv]

I am trying to configure my SCXI-1540 w/1315 card for excitation voltage and frequency using MAX - but it is not giving me that option when I click on the card and then properties, am I looking in the wrong place?

I have LabVIEW Express 7.0 Professional - SCXI-1000 Chassiss - along with SCXI-1112, and SCXI 1520/1314 - cable to the PCI-6052E is attached to the 1520 card.
MAX says it recognizes all the cards in the chassiss.

[Jeremy_L]

Hi CytecHDG-rwv,

There are two different ways to do this, depending on whether you are using Traditional DAQ or DAQmx. I will outline the two ways here:

Traditional DAQ
1. Add your SCXI chassis to your Traditional DAQ Devices and Interfaces by right-clicking Traditional NI-DAQ >> Add SCXI Chassis.

2. Go through the options and set up your chassis. Let it autodetect your connected modules. It should then appear under the Traditional NI-DAQ tree.

3. Expand the SCXI tree and right-click the 1540 module >> Properties. You should then see a dialog box appear where you can edit the Voltage excitation and frequency.


DAQmx
1. Add your SCXI chassis to your DAQmx Devices and Interfaces by right-clicking NI-DAQmx >> Create New.. >> SCXI Chassis >> ..

2.
Auto-Detect your modules and add your accessories, etc.

2. Now you must create a new DAQmx Task by right-clicking Data Neighborhood >> Create New >> NI-DAQmx Task.

3. Select Analog Input >> Position >> LVDT

4. Select your channel and finish the configuration.

5. Now click on the new task. The task panel should appear, and it should have fields for you to enter the voltage excitation (Vex) and frequency.

Hope this helps!

Jeremy L.
National Instruments

[CytecHDG-rwv]

Jeremy, Thanks for the reply.
I tried to set up the system as DAQmx.

I had MAX auto-detect the set-up - and it recognized all the cards - but did not select the 1315 accessory on the 1540 card - I had to do that manually - but in the configuration section I would select the accessory and it would deselect itself. I had to get out of the set-up and then right click on the 1540 card and click on the "Accessories" tab and select the 1315 terminal block that way.
It didn't seem right that the system should behave that way, but I pressed onward.

I then tried to create a new DAQmx Task

When I create new DAQmx task and then click on Analog Input no "Position" Tab appears for me to select, all I get are:
Analog>>Voltage
Analog>>Temperature
Ana
log>>Strain
Analog>>Current
Analog>>Resistance
Analog>>Frequency
Analog>>Custom Voltage with Excitation

Do you think there might be something wrong with either my hardware or perhaps my configuration that is not allowing it to recognize the 1540/1315 in DAQmx?
I had included the system report of what programs I am using, etc. as attached file nireport.txt

After the DAQmx did not work I tried installing everything as Traditional DAQ and it did let me set-up the 1540 Card with Excitation Voltage and Frequency and gain - I then went in to the VI that I had built and tried to use the Express DAQ Assisant to read the channel that I am connected to on the 1315/1540 - when I try to use DAQ Assistant it gives me an error saying that "Device not available in NI-DAQmx. It is possible that the device is being use by traditional NI-DAQ"

Which I guess it is since both configurations are now set-up in MAX.

I would PREFER to use the DAQmx set-up, but I am confused as to WHY it won
't come up with
Analog input>>POSITION>>LVDT
When I try to create a new DAQmx task.

Thanks for the help so far! As you can probably tell I am new at this.

Ryan

[Jeremy_L]

Hi Ryan,

My apologies for not recognizing this before, but Accelerometers and LVDTs are not supported on DAQmx 7.0. They are supported in DAQmx 7.1. A quick way to check is to go into MAX, expand the Software tree, and click on NI-DAQmx. The version should appear on the right main panel. From your system config report, it shows you have DAQ 7.0.1 installed.

To fix this, you must first uninstall DAQ 7.0, then go to the driver download page for DAQ and download DAQ 7.1. Install this new driver, and then you should be able to perform the steps I listed above. Hopefully, this should solve all of your problems!

Jeremy L.

National Instruments