Configuration of 1120D SCXI using the DAQ assistant
I tried to set up a channel on a module SCXI in 1120 D, as well as the rest of the SCXI system, using the DAQ assistant, but ran into a problem related to the range of the signal.
According to this, http://sine.ni.com/nips/cds/view/p/lang/en/nid/1658, the maximum voltage is located between 10v - 10v, but when I tried to configure a channel with a range of 0v - 10v, it displays an error indicating that the range of the signal was invalid and that the available range is - 0.005v - 0.005v, could someone suggest what I'm missing or what I need to do to set up?
Thank you for your message.
Can I ask that you have the software gain set on the device? The table on page A-5 manual found here your device that the gain settings must be for some input range.
I imagine you have the gain set to 100 while the available range is ±50 mV. For - 10V - 10V, please adjust the gain to 0.5.
Thank you very much
Tags: NI Software
I would like to create multiple entries multiple analog channels of type... I mean I want to have the voltage of 5 and 2 channels of temperature...
However, I am not using the DAQ assistant. I use "create channel" vi.
Can anyone suggest me please how to do / I submit my VI for reference... I have 5 tensions, and 2 temperature characterized as showing these 2 two separate graphics...
I'm relatively new to all Labview and terms and everything which affects programming. I've read tutorials and everything trying to understand things. One thing that I have a problem is the DAQ assistant. Now, if I wanted to place the DAQ assistant on the block diagram of labview and I have everything set up so that the voltage will travel in the DAQ hardware, how would I set up my block diagram so that I can get a graph of voltage vs time in which data begin recording until the voltage reaches a certain tension I was inputing and change such as 30 or 40 volts. The data will also stop recording when the voltage reaches the same number. I also want to be able to multiply the number of voltage coming out a number that I can change myself before it is graphed over time. Example, I mean the voltage to start recording when he reached 40 volts. Now when the voltage comes out of allows it to DAQ assistant say he is somewhere read 10 volts and the number I want to multiply by 5. So, I want to be able to multiply the voltage by 5 and then since it will be 50, it would begin graphing this number over time.
You would need to have a Boolean value which controls whether the (amplified) voltage is greater than N.
If so, he would send this value to a graph, if not, the tension would not get graphically.
Here is an example: (do not try to copy this code exactly, because it does not use a signal, but rather a whole number that is being created)
I use LabView to an NI USB-6009 enclosure, with two accelerometers like my analog input. When you use DAQ Assistant to build my VI I have not seen an option to measure continuously for a set amount of time. I need the test to run for two seconds and then stop.
Is there anyway to specify the exact duration of each test?
It's about as simple as you can get. Set the number of samples to be twice the sampling frequency (or whatever the multiplier that you want). That's it - a simple DAQ Assistant and nothing else on the block diagram. If you need it to be variable, just wire a control of the number of input samples.
I worked on code that uses the wizard daqmx for reading and writing of strain, temperature and voltage of a cdaq-9174, with NI 9211 and NI 9237 cards. Everything works fine in the code, but I want to be able to zero distortion at the beginning of a test data.
I tried to create a way to make sure I click a button, and it will be zero only strain as an autobalance data. Anyone have any suggestions on how to achieve this?
As I understand it, you're trying to have is a flaw. I have programmed a small VI than acomplishes this task.
Take a look and tell me what you think.
Technical sales engineer
I wonder if anyone has come across a simular problem with the synchronization of input and output voltage. I use a box 11 LabView and NI USB-6259. I have been using the DAQ Assistant to configure the input and output channel. In particular, my task is to generate a single rectangular "pulse" as the output voltage to drive a coil and once the pulse went to get a signal from a sensor of magnetic field and get a power spectrum. This means that the order and the time during which the DAQ Assistant is used is extremely important. For example, the output voltage channel must be opened first for 2 seconds. Subsequently, the channel of input voltage must be open for 1 second, in which the sensor signal is obtained and post-processed. Only after these tasks are performed in this order he can can be repeated in a loop until the experiment is over. I don't know how to trigger data acquisition assistants (one for entry) and the other for the voltage output correctly. Y at - it a trick?
See you soon
Thank you that I wired the error strings but the timing issue was unrelated to it. In the DAQ assistant, I simply had to choose the continuous aquistion of the 'samples' methods 'N-switch' for input and output voltage and all works fine now.
I use the DAQ assistant for analog voltage of an input OR data acquisition card. What is the difference between the rate and the number of samples in the DAQ assistant and what are the units of the two?
The number of samples is how many discrete to measures. Rate (per second) is how fast to acquire the specified number of samples.
If number of samples is 100 and the rate is 1000 samples per second, then the acquisition would take 0.1 second (100 / 1000).
Currently, I'm reading the two channels of voltage with the USB-6009. It happens that one of the channels is the output of a digital coder, and it would be much easier to use it directly to the PFIO entry that is defined as a counter. The problem I am facing right now, it's that I can't use the DAQ Assistant to use the analog voltage to a channel and the digital channel counter at the same time. Once I put the DAQ Assistant to read the input from analogue voltage, I won't be able to add analog inputs. And as I put the DAQ Assistant to use the PFIO as a counter, I can add more entries to read analog voltage is.
I wonder if it is possible to solve this problem using the lower level data blocks? Another solution would be to read two channels in analog input voltage and that the use of Matlab to process data resulting from it, since I was not able to do the counting to work simultaneously with the acquisition in Labview to impulses.
Hope you guys can help out me.
Thanks in advance.
Using a simple wizard of DAQ is incorrect. You need one to acquire analog inputs and one for the meter.
I create an executable file to run on a computer that does not have LabVIEW. The problem is that I am using the DAQ Assistant. The hierarchy of the VI is big enough, and I do not know how to include all the required files to eliminate the error "the version of LabVIEw full development is necessary to correct the errors." A picture of the hierarchy of the VI is attached.
I think I'm missing something in the installation. I'm downloading now the DAQmx. I knowticed that all 7 of my missing Subvi are DAQmx * .vi
For my first application LabVIEW, I'm looking to automate the calibration of thermocouples by measuring their response at different temperatures in a dry well Sizer. I get temperatures of thermocouples six by SCXI 1303/1102/1600 and have six channels put in place in one of my subVIs in the DAQ assistant.
I compare these values to temperature calibrator that I am acquiring by VISA series in an other Subvi. All these values are written in a .csv file.
Can I import these data into the DAQ Assistant to use for calibration? Is there a simpler way to associate with the channel calibration data? Currently, I could manually copy - paste the cells on the worksheet in the calibration sheet, but that seems just silly.
If there is everything that I could provide to help solve the problem, let me know!
It is possible to automate the calibration screws DAQmx at a lower level, in particular the DAQmx channel property node. Using you can specify advance nationwide and the values on the scale for your channel. I recommend you take a look at this example of the community. The property node configuration will be similar to, as illustrated below:
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).
I could be something with the pilot
Check this box:
Error 201003 to the MAX test panel or all by running the DAQ Assistant
In this forum, they speak the same error:
Spontaneous error code 201003 for acquisition of data PCI configuration
I'm trying to send a signal to the DAQ Assistant Express VI. I watched the movie "Generating a Signal" on the Web site of NOR (www.ni.com/academic/students/learnlabview/generate.htm) and I have my Signal simulate connected directly on the DAQ Assistant, as shown in this film. In my case, the DAQ Assistant sends the signal to a device USB-6009.
However, I received this message:
Error-200077 occurred to the DAQ Assistant
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.
asked the value: Sample clock
You select: On-demand
If I select 'On Demand' in my DAQ assistant and run the vi everything works beautifully. However, I need my DAQ assistant to be configured to generate a waveform AC continuous, not output a single alternating current rippling.
What happens here? I did not have this problem before on other devices of NOR. I am using LABView 2010.
This should be a pretty simple question, but I can't seem to find the answer online and currently do not have the functionality to test this:
I'm using LabVIEW 8.5 and have a VI that imports data from sensor through the DAQ Assistant. In the configuration tab, there is a range of signal input. What happens if my sensor exceeds this range? I get a warning? The default value is the maximum (or minimum)? I was interested in writing a code to display an error that I approach the limits of this range, but did not know if I also need to include code to display an error if the scope is exceeded as well.
Thanks for the help,
The behavior depends on the selected range and the device you are using.
If you are using a device with a single input range is valid, we will use this range, even if you set a smaller minimum and maximum in the DAQ Assistant. So, if your device only supports ±10V and you set the range to ±8V, you will still continue to get valid data after your top sensor 8V until what you approach 10V. When you reach the limit of the extent of your device, the output will be 'rail', and simply return the maximum value until the signal is less than the maximum value again.
Note: A device that is nominally ±10V usually has a go-around (such as ±10.2V) which are usually specced in the manual.
However, if you use a device with several ranges of entry then things become more complex.
NOR-DAQmx player will choose the smallest range that entirely covers the interval you choose. For example, suppose that your device supports the following input range: ±0.2V, ±1, ±5V, ±10V and you choose 0V - 3V as the range in the DAQ assistant. The NOR-DAQmx driver will focus on the input range and the list of the entry lines that your hardware supports and choose the smallest encompassing the entire range that you set. This would be the ±5V, because this is the only beach that contains up to 3V. Thus, all between ±5V input signal is returned and none outside this range will be 'rail' to the maximum or minimum value.
We do this because using small beaches make more efficient use of the resolution of the ADC. So, we try to use the most effective range based on what you ask without picking up a range that will make you miss data.
Let me know if I can clarify it more.
Hello, this is my first post here,
I've been wondering about this:
When you configure a new daq with the daq Assistant, is the resolution applied to the voltage / number of entries you define, or is it a fixed value per volt by channel.
I have a 6015 usb data acquisition, it has 16 inputs analog, 16-bit resolution 250 kech. / s 09:50 volts.
so is this as (2 ^ 16) / (16 * (-10-10)) = my resolution through volt?
or that this has nothing to do with the amount of channels,
If I want to measure more than 0 to 5 volts, my 16-bit apply from 0 to 5, or even more scale of data acquisition (which is 09:50 volts)
You will get full-resolution 16 bits on each channel regardless of the number of channels is configured. Renault most are multi-plexed if your specification of sampling RATE in usually a global significance that you can only scan channels with a sampling frequency = MAX RATE / number of CHANNELS. Also, most NI Renault have a Programmable Gain amplifier on the front-end server, so if you specify a range of voltage smaller in your task configuration the amplifier will automatically increase the gain to use most of the possible BIT ADC. You see care device and for more details...
How to create a task in the DAQ Assistant of LabView for one of our modules cDAQ without actually being connected to the cDAQ module?
You can simulate a large number of instrument supported by DAQmx with Measurement & Automation Explorer.
Right-click on the NOR-DAQmx devices and then create new, then simulate and choose from the list of supported devices.
For the cDAQ chassis first then your module.
Excuse me, but I don't have an English version of MAX and so I did not have the correct translation of command...
When your simulated device is configured, ca use you it with the DAQ Assistant in LabVIEW.
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