Labview 2013 daq assistant missing

I can't see the DAQ assistant in Labview 2013!
Labview 2013 + real-time + fpga
Max 5.5.1
Visa 5.4.0
Device driver august 2013
Why?
Thanks
Solved!
Go to Solution.

Did you install DAQmx AFTER installing LabVIEW? Can you see any of the DAQmx palette?
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VI DAQ assistant

En utilisant le VI DAQ assistant, je n'ai pas acces aux entrées ni sorties du VI.j'ai réinstallé les drivers DAQmx croyant que c'etait ça le probleme sans succes...Quelqu'un a t il déjà eu ce problème?

Hello tdiak,
Please keep in mind that this the English section of the forum. (this is the French forum: http://forums.ni.com/t5/Le-forum-francophone/ct-p/FrenchForums)
So posting a French question over here might not get as much response.
Seeing that I do speak/write/read French I'll try my best to help you.
Can you give some more information of what you mean with "no access" to inputs or outputs?
Have you ever Used LabVIEW or DAQ Assistant before or is it your first time?
Kind Regards,
Thierry C - Applications Engineering Specialist Northern European Region - National Instruments
CLD, CTA
If someone helped you, let them know. Mark as solved and/or give a kudo.

In Labview 8.5, what happens if the signal input exceeds the signal input range set by the DAQ Assistant?

Hello all,
This should be a pretty simple question, but I can't seem to find the answer on-line and don't currently have the capabilities to test this:
I'm using LabVIEW 8.5 and have a VI that imports sensor data through the DAQ Assistant. In the configuration tab there is a signal input range. What happens if my sensor exceeds this range? Will I get a warning? Will the value default to the maximum (or minimum)? I was interested in writing in some code to display an error as I approach the limits of this range, but was unsure if I also needed to include some code to display an error if the range is exceeded as well.
Thanks for the help,
Tristan
Solved!
Go to Solution.

Hello Tristan,
The behavior depends on the range you choose and the device you are using.
If you are using a device with only one valid input range, we will use this range even if you set a smaller minimum and maximum in the DAQ Assistant. Thus, if your device only supports ±10V and you set the range to ±8V, you will still continue to get valid data after your sensor exceeds 8V until you approach 10V. Once you reach the limit of the range of your device, the output will "rail" and just return the maximum value until the signal drops below the maximum again.
Note: A device that is nominally ±10V usually has some overshoot (like ±10.2V) that is typically specced in the manual.
However, if you are using a device with multiple input ranges then things get more complex.
The NI-DAQmx drive will pick the smallest range that fully encompasses the range you choose. So, suppose your device supports the following input ranges: ±0.2V, ±1, ±5V, and ±10V and you choose 0V - 3V as the range in the DAQ assistant. The NI-DAQmx driver is going to look at your input range and the list of input ranges that your hardware supports and choose the smallest that encompasses the full range you set. This would the ±5V, because that's the only range that contains up to 3V. As a result, any input signal between ±5V will be returned and any outside this range will "rail" to either the maximum or minimum value.
We do this because using smaller ranges make more effective use of the resolution of the ADC. Thus we try to use the most efficient range based on what you request without picking a range that will cause you to miss data.
Let me know if I can clarify this further.
Seth B.
Staff Test Engineer | National Instruments
Certified LabVIEW Developer
Certified TestStand Developer
“Engineers like to solve problems. If there are no problems handily available, they will create their own problems.”- Scott Adams

Can't launch DAQ assistant in LabVIEW

Hi
I cannot launch DAQ assistant from LabVIEW, but i can do that from MAX. DAQ from MAX is not that flexible because i can't customized the code or convert it. I 've tried all the various ways to open DAQ assistant and i finally realized something, on the block diagram, i open Tools/Advance/Edit palette/Express/Input/DAQ is missing (question mark) and many more functions are missing.
I'm using the evaluation software of Labview 8.6 and NIDAQmx 8.7.1
Can you please tell me what is wrong. I really need to launch NI DAQmx from LabVIEW.
Rgds
Paul
Solved!
Go to Solution.

Hi Christ
Thanks for the feedback.
From Block diagram interface: Function palette/Measurement
I/O ? (there is nothing just MAX config).
But from Front Panel: Modern/ I/O controls, i can see DAQmx names controls
which i don't think i need now.
What do mean reintalling DAQmx with LV
support, is it different from the LabVIEW evaluation software or i just have to
reinstall the LV
evaluation software.
Rgds
Paul

I do not have the daq assistant vi on my labview 2010 and have found no drivers for it what should i do

I do not have the daq assistant vi on my labview 2010 and have found no drivers for it. I downloaded the service pack but that did not have it either what should i do.

Hi Youzhang He,
Did you install LabVIEW first on your PXIe 8102 before the drivers? Most likely, you're missing LabVIEW support for your DAQmx drivers. Fortunately, this is an easy fix. What you should do is open Add/Remove Programs, select National Instruments Software, select Uninstall/Repair. In the window that pops up listing NI software, select NI-DAQmx 9.x and select Modify. In the window that appears, expand Application Development Support and select to install LabVIEW support. From here complete the install process and restart your system. LabVIEW support should be installed and DAQ Assistant should appear in your palette.
Allie

Error message from labview when trying to set up the DAQ assistant

I recieve a message from labview when I try to set up the DAQ assistant and select a channel to use. The error I get states "An exception occured within the external code called by a Call Library Node. This might have corrupted LabView's memory. Save any work to a new location and restart labview". Labview then freezes. I have reset the DAQ device in trying to slove this but I still get the same message. How do I solve this?? thanks - mars2006

Hi Mars-
It sounds like your NI-DAQ installation may have become corrupted. I would suggest uninstalling and reinstalling the DAQmx 7.4 driver to correct this problem and ensure that you're up to date. This download is available here: NI-DAQ 7.4
If the problem persists you may want to uninstall and reinstall LabVIEW and then NI-DAQ in that order. The error message will usually give an indication as to which VI the error occurred in. Please let us know which VI is failing if you're unable to avoid the error with these suggestions.
Have a good day-
Tom W
National Instruments

NI-DAQmx task works in MAX or DAQ Assistant test panel but not in LabVIEW

I am attempting to read a single AI channel from a PCI-6024E card via an SCB-68. I have created a NI-DAQmx Analog Input Voltage Task in MAX for this channel, sampling in contiuous aquisition mode at 100 kHz, 10000 samples at a time, with RSE terminal config. If I use the Test feature from MAX, the channel acquires data as expected.
In LabVIEW, I call this task using an DAQmx Task Name Constant. If I right-click this constant and select "Edit Task", the Daq Assistant opens and I can use the Test feature from the DAQ Assistant to see that the data is still being acquired as expected.
However, when I try to programmatically read this channel in LabVIEW using the VI "DAQmx Read (Analog Wfm 1Chan NSamp).vi", the VI returns a constant DC value of 500 mV, which I know is incorrect (I can monitor the signal across the two terminals in the SCB-68 with a DMM to know that the signal coming in varies as expected, and as I read using the test panels). This erroneous reading occurs even if I make a new VI, drop the task name constant on the diagram, right-click the task name constant and select "Generate Code - Example" and let LabVIEW create its own acquisition loop (which is very similar to what I already set up, using the "DAQmx Read" VI).
Any ideas why the Test Panels work correctly but the LabVIEW code does not?

Hello bentnail,
I'm not sure why the test panels are readin the value correcly but the LabVIEW code does not, but there are a couple of things we can try.
1) What happens if you just use the DAQ Assistant and place it on the block diagram? Does it read out the correct values?
2) Try running a shipping example that comes with LabVIEW. "Acq&Graph Voltage-Int Clk.vi" should work well.
3) What kind of signal are you expecting to read (peak to peak voltage, freqeuncy, etc.)?
Thanks,
E.Lee
Eric
DE For Life!

Getting the data in file using DAQ assistant in Labview

I am using SCXI 1000 chassis, SCXI 1125 input module and SCXI 1320
terminal.
I am using DAQ assistant in labview to obtain temperatures and store it in
a file. The experiments run the whole day and I need the whole data
generated during this time to be stored in a single file, but I am unable
to store it in a single file.
Can someone please give me some insight as to how can I achieve this?

Hi Mr,
It would be helpful to see your code to see exactly how you are acquiring the data. Are you doing continuous buffered measurements? Or are you performing single point temperature measurements in a while loop?
Either way you will want to use the "write to spreadsheet" VI in your loop. Simply wire your data into the "write to spreadsheet" vi and se the "append to file" input to TRUE. This will make the data add on to the end of the file with each iteration of the loop. The "write to spreadsheet" VI is located in the file IO pallette in LabVIEW.
Thanks,
Sal

Why can I only open DAQ assistant properties using the windiws profile I registered labview on?

I have Labview 7.1 installed on Windows 2000. When generating block diagrams for codes, the properties dialog box for the daq assistant can only be opened when logged into our system on the profile originally used to install the software or when logged in as administrator. All other properties dialog boxes open under any user profile.

I do not use Windows 2000, but I expect that the folder in which this function is held does not have a 'Full Control' access setting for all users.
See if you can change the folder profile to allow access and full control to all users.
Hope this helps.

DAQMX vi files missing in Labview 2013

I try to open this file slinger-logger.vi [see attachment], but I can't open it, because it is missing files such as DAQmx Clear task.vi
I already tried to install several versions of DAQmx (14.1, 9.9, 9.4):
http://digital.ni.com/public.nsf/allkb/B0D5630C0A50D5C6862578E800459248
But I couldn't get the file working without those missing vi errors. Can anyone get this file working in Labview 2013? Or Labview 2012?
Attachments:
Slinger-logger.vi ‏70 KB

kihans wrote:
I already tried to install several versions of DAQmx (14.1, 9.9, 9.4):
http://digital.ni.com/public.nsf/allkb/B0D5630C0A50D5C6862578E800459248
But I couldn't get the file working without those missing vi errors. Can anyone get this file working in Labview 2013? Or Labview 2012?
Why do you install random version of DAQmx, especially since 9.4 does not even support the LabVIEW 2013 or 2012 versions you mentioned. You even show the link outlining that! Pick the neswest one only!
Tell us exactly what you did:
Did you install DAQmx after installing LabVIEW and did you select support for the installed LabVIEW version?
Did you reboot after installation?
LabVIEW Champion . Do more with less code and in less time .

Missing wire connectors on DAQ Assistant express VI's

I'm seeing some strange behavior on one specific computer running LabVIEW. The problem is that DAQ Assistant VI's have no connector points. I have nine other identical computers (used in a classroom setting) but I don't see this behavior on the others (I haven't tested them all).
I've removed LabVIEW (and all other NI software) and re-installed it (LabVIEW v 8.6.1). I also tried a more recent version of LabVIEW (2010?). Same behavior, no connector dots on DAQ Assistant VI's.
The computers use DAQmx with USB hardware (cDAQ).
I guess my next step is to format the hard drive and re-install everything. My theory is there's some kind of driver corruption. What do you think?

Allie,
Here are the steps I use to create the Express VI using the DAQ Assistant:
* On the block diagram:
Right click -> Measurement I/O -> MX -> DAQ Assistant
* Drop Blue box on block diagram.
* Configuration Screen Appears
Aqcuire Signals -> Analog Input -> Voltage -> Dev1 (USB 9219) -> ai0 -> Finish
* Voltage Input Setup Appears
Accept default settings -> click OK
* Voltage Input screen disappears, a blue DAQ Assistant appears on block diagram. No connection points.
When I execute the exact same procedure on another computer I get a DAQ Assistant with connection points.
Weird eh?
thanks!

Labview ignores all but 1 Daq Assistant, how can I avoid this?

When I am putting together my block diagram, I use the DAQ Assistant to orchestrate everything. Then when I go to create another DAQ Assistant instance, LabVIEW seems to ignore the first one. It appears as though I can only use one DAQ Assistant at a time in my VIs, is this the case? I am a bit of a novice, is there an easy way to avoid this, or change the orginal DAQ Assistant into some other form so I can use another DAQ Assistant for developing another part of my VI?
I have looked long and hard for a good explanation of the difference between Tasks and Virtual Channels and while I have found efforts at explaining it, I do not understand. I see that I can convert my DAQ Assistant into a task, but then I have a task output which does not help me (I need a data output for my VI).
I am sure this is obvious to someone that has done it a million times, but I just can't find an answer wading through all of the knowledge base information or the LabVIEW help.
Thanks a bunch!
~milqman

Hello milq,
That following tutorial that Novatron linked you earlier is an awesome resource for becoming familiar with programming with the NI-DAQmx.
Learn 10 Functions in NI-DAQmx and Solve 80% of Data Acquisition Applications
An important point to take away from this tutorial is that you can either create a DAQmx task using the wizard-style interfaces provided by the DAQ Assistant and within Measurement & Automation Explorer (MAX), or you can programmatically create and configure your DAQ Task in your LabVIEW code using the DAQmx Create Virtual Channel VI, DAQmx Timing VI, etc. When you create a new DAQmx Task using the wizard-style interface, you are configuring all of the settings for your task manually. When you use that DAQmx Task in LabVIEW (with a DAQmx Task Control or Constant), you are referencing all of those configuration options you've manually set. To actually perform a read or write operation based on those settings, you need to wire the DAQmx Task into the 'task in' input of a DAQmx Read or DAQmx Write VI.
So for your analog input operation, you can wire the task directly into a DAQmx Read VI. In the DAQmx Read VI, you'll want to select the type of task your reading from in the drop down box (Analog), if your reading from a single or multiple channels (1 Chan or N Chan), and if taking just one or multiple measurements with each call to the DAQmx Read VI (1 Samp or N Samp)
For your digital output operation, you'll want to configure a separate digital output task, and wire it directly to a DAQmx Write VI. Again, select the type of task your writing to (Digital), if your writing to a single or multiple channels, and if you want to perform a single write or multiple writes.
To help with getting started with DAQmx programming in LabVIEW, I would highly recommend taking a look at the DAQmx example located in the LabVIEW Example Finder (Help > Find Examples). A difference you'll note in these examples is that all the task configurations that you have been making with the wizard-style DAQ Assistant are done programmatically with the DAQmx Create Channel and DAQmx Timing VI. I hope this helps and good luck!
Travis G.
Applications Engineering
National Instruments
www.ni.com/support
Message Edited by Travis G. on 06-21-2006 05:23 PM
Attachments:
AnalogInDigitalOut.Jpg ‏21 KB

Unknown error when adding a DAQ assistant to a blank VI in LabView 2014

Hello,
I currently have an issue when I try to add a DAQ assistant to a blank VI in LabView 2014 Service Pack 1, version 14.0.1.
It was working previously and has now stopped working. I have reinstalled LabView 2014 but the problem still exists.
I have also reinstalled NI-DAQmx 14.5 but this did not cure the problem either.
I have made sure that the C:\Program files\National Instruments\MAX folder has Read & execute, List folder contents, Read function allowed for the user account in use on Windows 8.1
Thanks in advance for the help.
Scott.

As soon an the DAQ assistant is dropped onto the VI block diagram an error window pops up stating that "An unknow error has occurred" with an ok button. This does not force LV to close, the DAQ assistant icon stays on the block diagram, the block is non functional i/o signals available to wire to, I can not access any properties for the DAQ assistant. Other than that LV appears to be functioning.

Once running the labview program which contain DAQ Assistant ,the message of "ERROR-50405....." appear.

Once running the labview program which contain DAQ Assistant and can be run without any error before, the message box of "ERROR-50405....." appear which capture down in the attachment. We use PCI6221 and LabVIEW 8.0 in Windows XP. I also found that the Device Manager of Window have recognized the PCI6221.
Any help on this situation would be great.
Attachments:
labview error.JPG ‏145 KB

Hi~
This error is due to signal interference between the device and the computer. This could be environmental or due to the PCI Controller. You can on a different computer to see whether this problem persists.

Can't use Daq Assistant in Labview 7.1

hi! I have Labview 7.1 installed and an AT-MIO-16E-10 NI board. I can see the board in MAX\devices&Interfaces\traditional NI-DAQ but i can't run any tests(Test panels). I don't know if this is normal for this NI-DAQ model. anyway my main conceirn is that i can not use DAQ Assistant in LabView(when i double click on it or right click->Properties nothing happends). So i can't use my board in LabView. please help! thanks a lot

You can use your board in LabVIEW but you can't use it with DAQmx. In the DAQ Quick Start Guide, the supported devices are listed and the AT E series is only supported with traditional DAQ.

Labview 2013 daq assistant missing

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