Meilhaus 3106 MAX/DAQ Assistant questions

Similar Questions

• Question of sampling DAQ Assistant

  Hi all

  I have attached a VI that I used to record data from a few different voltage and the channels of the strain. All channels and sensors work perfectly and the VI reads data very well, but will be only newspaper for about 9 seconds. I found that the reason is that, within that period, the amount of updated read samples is reached. I also found that the reason for which is rather than on the statement sampling DAQ assistant 50 or 100 Hz it samples at a rate of about 1.6 kHz (0,000620 seconds). I have nothing seems to change the rate of that sample to so if anyone has any ideas it would be much appreciated!

  Thank you very much

  Andrew

  I think I can explain what is happening. In a previous post, the op mentions using a 9237. That has a sampling rate minimum of 1.63 kech. / s. The rate in the corresponding file.

  Andrew,

  Read the Manual would have answered your question.

• Device simulated in MAX, auto test without error and has work Test panels, but is not displayed in the DAQ assistant.

  I am trying to create a development machine, where we can test the new code without using our physical hardware. I followed this guide to set up a system of simulation. I get to step 3.2 b, but the device does not appear in the DAQ assistant. MAX, the device self test and gites calibrated successfully, and when I open the test panels, I see some sort of signal. I guess that's a default entry simulated since I didn't that device to look for anything? Note that two devices, I am creating the show upward into the devices section and Interfaces, but that, even after running auto calibrate, automatic Calibration date is not yet specified.

  

  When I try to test the device and create a voltage according to the guide, I can't see a device in the creator of data acquisition task.

  

  Steps 1 and 2 of this guide are of course met. Step 3 is not, but this is not surprising because a simulated device is in device in any case manager. Also, I'm not under RT, so step 4 is satisfied.

  Someone at - it ideas?

  That would be because the PXI-5124 is a digitizer not an analog input device.  You must use the NI SCOPE not NOR DAQmx driver

• DAQ Assistant does not export the values on the scale

  Hello all-

  Potentially stupid question but here goes: I'm using the DAQ Assistant to read in 4 analog input voltages, continuous sampling acquires data at 10 Hz 1 point, using LabView 12 on a machine with an acquisition of data USB-6341 simulated device (because my office is more comfortable than the lab!). I want to change the first two signals of voltage to temperature and humidity, respectively. I used the «create a new...» "in the 'Custom Scaling' drop-down in the"Voltage configuration"tab for each of these channels, named gave the slope and the intercept at the origin for the respective linear scales and click OK."

  When I test the code - and yet once again, I'm not on a machine with a 'real' DAQ system, I use a simulated device, and it seems that NEITHER MAX generates a sine wave of long period with little noise on top for this - I do not get the results on the scale of my 'signal', I get the raw tension. (If you run my code, I will join, the Relative humidity must be between 0 and 100 and temperature-40 to 60, is not 0 to 5, for example.)

  So, what happens? Is there some flag or setting that I missed? The scaling only works on voltage data 'real' of a 'real' instrument DAQ, instead of a simulation (which is why I mentioned twice!)? I have to do something in NI MAX as well as Labview?

  Thanks for any help you can give.

  John Easton

  Simulations devices will not respond to custom scale.  They are just supposed to allow you to configure your device without errors when you do not have the unit on-site.

  "NOR-DAQmx simulated devices create a noisy sine wave to all the entered analog." Simulated data other set-up is not available at this time. »

  http://www.NI.com/white-paper/3698/en

  They generate a sine with an amplitude equal to half of your specified input range.  If you want to work with simulated data that would be more realistic for your application, you could write a VI to generate the data and have a business structure to manage both "simulations" and "real", then you could switch back depending on whether you have access to the material.

  I just checked this with a PCI-6254 I install and simulated a PCI-6254.

• Conversion task DAQ Assistant

  When I try to convert my DAQ Assistant tasks with a right click - Convert to task NOR-DAQmx I get a name and a scrolly input output with all the broken wires. Similarly, if I create a task in MAX and then use a constant for the task on the block diagram name I get the same result of entry scrolly. Am I missing a step here?

  Thank you

  Hi Mirabelle

  Glad to hear that you managed to solve the problem! In response to your questions:

  -L'information that read you about the creation of tasks in MAX is correct; It is possible to create a global task (an available screw a lot) in MAX. However, it is not necessary to create all of the tasks in MAX. As you think, if you use the task within a single VI, there is no need to create the task in MAX - in fact, it's probably easier just to create the task in the VI himself, either with screws of Express Assistant DAQ or DAQmx screw person on the range of functions located under e/s measurement > DAQmx - Data Acquisition.

  -When tasks change in MAX, it will not automatically be changed in LabVIEW. To make changes in LabVIEW, you will need to edit the task properties in LabVIEW, or remove the old task and replace it with the change.

  -I'm not sure what you mean by the question in your "P.S." to 100%, but I'll try my best to answer. Is there a specific example you speak? If you ask the use of screws DAQmx as DAQmx Virtual Channel Create, task control DAQmx and DAQmx Read etc., as shown in the examples of the expedition, then there are a few reasons to use those. Basically, screws of Express DAQ Assistant consist of a combination of the screw in the DAQmx - Acquisition of data from the function palette section. In general, screws of Express DAQ Assistant moving slower than the standard SIE DAQmx. It may be easier to debug the code when using standard screw, as it is obvious which task runs each section of the code. And finally, there are some limitations to the use of the DAQ Assistant, so while they may be easier to use in the short term, long term, I would recommend familiarize themselves with standard screws, because they make possible more complex tasks.

  I hope this helps! Feel free to let me know if you want to bring me anything, or if you have anything else that I can help you.

  Best regards

• How can I programmatically change the parameters of voltage range in a DAQ Assistant

  Hello

  First post here.

  I need to be able to change the properties of voltage range of a daqmx assistant DAQ based on user input.  My material, an SCXI module - 1102C does not change this property on a running task, so I would together the range of input voltage analog before activating the DAQ Assistant, or break the DAQ Assistant immediately after it starts, set the values, and then resume.

  I don't know how to change the task ahead because the DAQ assistant creates the task when it is running, and there is no job before that.

  In the attached photo, I have a conditional section, configured to run only if the loop iteration is 0.  I take the task of the Daq assistant, sending him stop vi of task, set the property and then send the task with the snap the vi task. I can watch him run with lightweight debugging on, and everything seems to work properly, but on the second (and all others) iteration of the loop, I read I. Max and it seems that a re DAQ Assistant set it to the 5V.  You can see what's going wrong here?

  BTW, there is a continuous acquisition and the code doesn't produce error messages when executing.

  I've encountered a similar question someone posted here in 2006, but his question was specifically a Labview API (VB, I think) and not a real solution of G.

  Attached are the real vi in question and a PNG of the block diagram.

  Thank you!

  Ruby K

  First of all, if you want to start getting beyond the basics with the DAQ hardware, you have to stop using the DAQ assistant and do it with lower level VI DAQmx.  There are hundreds of examples in the finder of the example.  You can even make a right-click on the DAQ assistant and select open front panel.  This will create a Subvi, you can open and see what is happening behind the scenes.  Do it.  I think you will find that the task DAQ is recreated on each (although I'm not 100 percent the way parameters are established or maintained in each section of this sub - VI).

  The second problem is that you have a bit of a race on iteration 0 condition.  These two property DAQ nodes are running at the same time.  Thus, when you read the AI. Max, this can happen before or after the AI. Max is located in the structure of your business.

  Thirdly, make sure that involve you your son of the error.

• DAQ Assistant does not appear when starting a new project in Visual Studio 8 with Measurement Studio

  Hello

  I have installed a system with the following configuration:

  Windows 7 Prof

  OR MAX

  Visual Studio 2008 Standard

  Measurement Studio 2013 (evaluation)

  Device drivers OR Feb 2013

  When I start a new project in Visual Studio, I can choose a model with NEITHER Windows forms application. After that I get an overview of the classes, but after that, I get no DAQ assistant. What Miss me as is actual references in the Toolbox, with the exception of the buttons and graphics of NOR.

  Someone at - it a solution for this problem?

  Thanks in advance,

  Erik

  Dear Erik,

  I saw the same problem and I think that you can solve with the installation of the DAQmx 8.8 and make sure to include the Visual Studio integration.

  If you have any questions just reply to this email.

  Have a good time.

  Kind regards

  Hossein

• Using DAQ Assistant with a system remotely

  I'm new to LabVIEW and National Instruments hardware and I am trying to use an instrument with LabVIEW using the DAQ Assistant. I use a PC with Windows Vista and I am connected via a network to a PXI-8108 controller in a PXI-1050 chasiss chassis. The instrument is just a thermocouple which I use to become familiar with everything. The thermocouple is connected and the connection SCB-68 block which is connected to a PXI-6221 multifunction data acquisition in the chassis. I am able to create a task in MAX under remote system and everything seems to work. What I want to do is to use this instrument in LabVIEW, and it seems that for this I need to use the DAQ Assistant, but when I do it says no supported device is found. I wonder if there is a way to get LabVIEW lean on the remote system to see the acquisition of data and the thermocouple.

  All advice is appreciated.

  Thank you

  Hi all

  Ben is correct.  RDA is no longer supported in DAQmx.  We have another way to use DAQmx with a remote system.  It is use DAQmx with an OPC server or simply by shared network variables.  There is a section of the base of knowledge here that should help you get started.  You should also take a look at the developer section area here.  The basic idea is that you can use a variable shared within labVIEW that is bound to a variable shared on your networked machine.  In this way, you can write and read values from a task DAQmx.  Look at the instructions in the above two items and let me know if you have any questions.

  Kind regards

  Paul C.

• DAQ Assistant is not in LabView

  Hi all

  I use NEITHER cDAQ-9174 and NI 9203.  I have already installed the driver for the NI 9174 cDAQ, which is NEITHER-DAQmx 9.8.0.  I can see the device when I opened NI MAX. However, when I open LabView 2015, I can't find DAQ Assistant in the function Palette. I noticed on the chassis, 'ACTIVE' light is not on while two other "POWER" and "READY" light is on.  I look in the forums OR but I can not find the solution.

  Any suggestion, please help!

  Thank you!

  DAQmx 9.8 is not compatible with LabVIEW 2015.  You must use at least DAQmx 15.0.  See here for more details: NOR-DAQmx and LabVIEW compatibility

• 201003-error occurred in the DAQ Assistant

  Hello. I use "cDAQ-9178" and "NI 9215" and "NEITHER 9402" are added on. "

  However, when I run Labview code, "Error-201003" occurs.

  {

  Device not available. Possible causes:

  Device is no longer present in the system / device is not powered.

  Device is turned on, but was temporarily without electricity / device is damaged

  }

  (Error appears as the 1st and 2nd figures below).

  (Plans of logic is the figure below).

  Thank you.

  I could be something with the pilot

  Check this box:

  Error 201003 to the MAX test panel or all by running the DAQ Assistant

  http://digital.NI.com/public.nsf/allkb/5413F392D88326148625746B006745C5

  In this forum, they speak the same error:

  Spontaneous error code 201003 for acquisition of data PCI configuration

  http://forums.NI.com/T5/SignalExpress/spontaneous-error-code-201003-for-PCI-DAQ-Setup/TD-p/830707

• Control relay with Boolean switch using DAQ assistant 9481 - problems

  Sorry for what may be a stupid question but I'm stuck in quicksand.

  I use a relay module 9481 and have two external relays connected lines 0 and 1.

  When I create a digital output 0 line by line, I can run the test inside the express and activate the relay and turn off without problem.

  The generated block DAQ expressed expects a Boolean input of 1 d. (See attached photo).

  I want to connect a Boolean switch relay line disk 0. You can connect live not because the switch is Boolean and the input is Boolean 1 d - I'm a conversation in the pict.

  All plumbing lines display results, the relay never active.

  Any bunch would be greatly appreciated! Thank you

  

  Mr._Mechanical,

  Welcome to the Forums of switch OR this forum is generally intended for products OR-SWITCH [such as the NI PXI-25xx & NI SCXI-11xx], I think I know the answer to your question.

  I think the reason why it's a failure is the conversion you make generates a table of 16 Boolean [as the 'boolean to (0,1)' function creates a data I16 type] with your data more false data points 15.

  

  When you try to control the relay, he sees 16 datapoints are you Commander to a single port [channel] and so error out.

  

  My suggestion would be to use normal DAQmx digital output screw [with, he set up as ' Digital > single channel > single sample > Boolean (1 line) "] rather than the DAQ assistant.

  If you use the daq assistant, simply by using the function 'Building the table' will transform your simple Boolean data point in a Boolean array containing a single element.

  

  While the DAQ assistant is very easy to use, I recommend that you use the DAQ assistant, because this reduces the features and increases the execution time.

• Under VI 'DAQ Assistant': Sub VI is not executable

  Salvation OR engineer,

  My task is to acquire and record data of input voltage analog with PCI-MIO-16-1 and BNC-2110 connector. I can get the signal via MAX, but as soon as I drop down the function palette DAQ assistant in FASHION Lab blocks diagram, my run button becomes broken. I got the error message like "Sub VI"DAQ Assistant": Sub VI is not executable. How can I overcome this?

  Thank you

  Yvette.

  Hi Paul,.

  Unfortunately, SignalExpress is a different license than LabVIEW. However, you don't need a SignalExpress to acquire and record data. LabVIEW has every ability to SignalExpress and many more.

  Kind regards

• DAQ Assistant stopped working

  Hi all

  I have labview 8.6 installed on my laptop. currently of the problems with the DAQ assistant. When it initializes the host of assistant OR no longer works and an unknown error message is given. Don't know where to get corrupted files etc my daq is a usb-6008 and my laptop is running windows vista. I think that the issue is to do with a driver in the folder of Max but I don't have enough experience with her. I currently install OR-DAQmx 9.0.2 in the hope it will solve the problem. any help on this would be greatly appreciated.

  Kind regards

  Jason

  Hello jpraffer,

  Install the DAQmx helped 9.0.2 or you're always to see the current issue.

  Kind regards

  Philippe

• Cannot get DAQ Assistant in Labview to cDAQ 9184

  I am trying to build a system for the acquisition of data with one NOR cDAQ 9184. I installed the drivers for the system and I'm able to get to the DAQ system using NI Max (under my system - devices and Interfaces - devices on network) and all channels appear well, however, I tried to follow the procedure described in http://www.ni.com/white-paper/11703/en/#toc2 to integrate my system with LabView and I am unable to find the tab software under the unit to be able to write the RIO 3.5.1 on the appliance and cannot find the device to through the LabView project.

  Your real problem is error-50103.  This is a common mistake, and you can find the answers for it if you are looking for in the forums.

  The problem is that you can't have several tasks (or several assistants DAQ) try to access the same device at the same time.

  Make a DAQ assistant who has all defined channels you wish to purchase.

• Scaling DAQ Assistant

  I'm looking for help with the DAQ assistant,

  I have a signal 0-20 my. I want my card 8 to 100 and 16 my to-100. I entered y =-x + 300 25. I put I. Max = 300 (x = 0 my) and AI. Min = - 200 (x = 20 my). I get the following error:

  Error-200077 occurred to the DAQ Assistant
  Possible reasons:
  Requested value is not supported for this property value. The value of the property may be invalid because it is in conflict with another property.
  Property: AI. Min
  Asked to value: - 200.0
  Valid values begin with: 299.500000
  End with valid values: 300.500000

  When I get 300, I get the following error:

  Error-200082 occurred to the DAQ Assistant
  Possible reasons:
  Minimum is greater than or equal to the maximum. Make sure that the maximum value is greater than the minimum value. If you are using a custom scale, check that the maximum on the scale is greater than the minimum scale.
  Property: AI. Min
  Value: 300.0
  Property: AI. Max
  Value: 300.0
  
  

  What I am doing wrong?

  Thank you, but I just found this one. I use the range mapped instead of the linear range. Not sure why it makes a difference, but it works!