USB 6009 DAQmx Deployment

Hi.
I have created a 4 channel differential data logging scope with a NI USB-6009. I would like to deploy this 'easily' to many of my colegues. I have app builder and the ability to build apps, but I would like to include the correct drivers for the 6009 in with the installer (although I have selected NI_DAQmx Core Runtime and NI_DAQmx MAX config support).
For the running of the app, I have created a Task that consists of 4 channels. I would like it for my end user not to have to configure this. Does anyone know how I might acheive this? My experience of deployment is limited.
Many thanks, Alec

Hi Alec,
It's also worth installing DAQmx MAX Configuration Support from the install builder if you still want to be able to modify the tasks from MAX as well.
Best Regards,
Chris
National Instruments - Tech Support

Similar Messages

USB-6009 Daqmx Base 3.3 Cannot creat 2 or more channels on Windows mobile 6

Hello,
I have USB-6009, PDA iPAQ 214, WM6, Daqmx base 3.3, Labview 2009. In order to create new mobile project I use wizard and standart dynamic example: Cont Acq&Graph Voltage-Int Clk.vi. All works ok, but if I add more chanels in VI "Create Channels" or place new VI block and enter "Dev1/ai1", exe on my PDA cannot work correctly. Exception after RUN. I have no idea how build correct application with 3 channels without this exeption... On PC all works. Whay right way to create channels? I attach VI which don't work, for examle. I read daqmxbase cannot support WM6, but 1 channel work ideal!
Attachments:
diagramm.jpg ‏113 KB

Vital000,
I forgot to mention that, yes, Windows Mobile 6 is not supported along side of DAQmx Base. That means you might be able to get some of the same functionality(limited) that you would with Windows Mobile 5, but most likely not 100% functionality. This could explain why 1 channel works and multiple channels do not. I will try and help you out, but as this is not supported my ability to help is limited.
Ben Sisney
FlexRIO V&V Engineer
National Instruments

USB-6009 DAQmx parallel devices

Hello, im using a NI USB-6009. And I have to read two analog Inputs, write two analog outputs and two digital outputs. All this in parallel.
It works if I connect them successively, but then the VI is too slow for a good measurement.
So my question is, can it generally work if the dataflow isn't given trough the hole chain, but rather coincidently trough the single parts of the VI?
Now it doesn't work.
Solved!
Go to Solution.
Attachments:
NI_USB_2.vi ‏36 KB

Hi there thanks you very much for the fast answers.
Now it works very well. First I had a error with the AI's but now I take them together and the error is gone.
regards
Moritz
Attachments:
NI_USB_3.vi ‏42 KB

USB-6009 AI and AO

Hello,
I have an USB-6009 DAQmx device. I would like to measure analogue input with the possible highest sampling rate (48kHz) . At the same time, I need to ramp a voltage analogue output from 0 to 5 Volts, lets say during 2 minutes. These two tasks do not require close syncing. Regarding to the spec, the highest rate of the AO is 150 Hz. It is ok for my application.
So the AI measurement will use device internal clock, and the AO can only work with software timing. Is it possible to independently ramping the voltage output and at the same time, reading the analogue input? If not, is there a workaround for this device?
Thanks for advice!
Regards,
Solved!
Go to Solution.

I have made a test version (the final solution will do measurement for 2 minutes, so I will need to ramp up the analogue signal from 0 to 5 Volts in 2 minutes, and I think 10 msec will give a sufficiently smooth ramp curve --> 24000 steps over the 5V range).
In this test VI I do measurement on two analogue inputs using internal timing, and in parallel, I do the ramp signal with software timing (I guess it is not advised to go below 10 msec because Windows can slow down too much?).
Additional question: when I use DAQ on the two input channels, I understand that, the available highest rate is half of the maximum. But when I plot the two channels, the points are at the same time on the XY graph. How does LabView interleave data from the two channels during measurement?
Thanks for help and advice,
Regards,
Attachments:
Test1.vi ‏213 KB

USB 6009 and DAQmx Base Concerns

Hello,
I just received a USB-6009 multifunction DAQ device along with DAQmx Base for use on Windows XP with LabWindows/CVI ver 7.1. Both the 6009 and DAQmxBase are successfully installed however I have several questions, I hope I am missing something obvious:
1. The Task Configuration Utility is not needed for use with LabWindows/CVI? I believe I read this in the Getting Started Guide.
2. There is no function panel for the DAQmxBase functions? I even searched the installation CD and found no .fp files. So the only way to know what functions are available with DAQmxBase is to open the NIDAQmxBase.h file and search through the function prototypes? Then, to know what a function does it is necessary to open the C Function Reference Manual via the Windows Start button and search for the function name of interest?
3. When creating a digital input or output channel with DAQmxBaseCreateDIChan or DOChan is it only possible to setup a "channel" as an entire port? Is it not possible to setup a channel as a single input or output line? Similarly, once the channel is configured is it only possible to read or write an entire port with DAQmxBaseReadDigitalU8 or WriteDigitalU8? I was expecting something similar to the DIG_out_line function used in Traditional NI-DAQ where a board number, port number, line number and state are passed so that a signal output line can be set on or off.
Thanks in advance for the assistance,
- Aaron

Aaron T. wrote:
Hello, I just received a USB-6009 multifunction DAQ device along with DAQmx Base for use on Windows XP with LabWindows/CVI ver 7.1. Both the 6009 and DAQmxBase are successfully installed however I have several questions, I hope I am missing something obvious: 1. The Task Configuration Utility is not needed for use with LabWindows/CVI? I believe I read this in the Getting Started Guide.
**The Task Configuration Utility is not necessary, except that there is significant functionality missing from DAQmx Base but present in the utility. That includes a lot of what DAQmx calls "proerties", and includes things like the convert rate for AI scanning.
2. There is no function panel for the DAQmxBase functions? I even searched the installation CD and found no .fp files. So the only way to know what functions are available with DAQmxBase is to open the NIDAQmxBase.h file and search through the function prototypes? Then, to know what a function does it is necessary to open the C Function Reference Manual via the Windows Start button and search for the function name of interest?
**I don't use CVI so I don't know anything about this. It strikes me that even if you have such a panel reading the documentation is a good idea
3. When creating a digital input or output channel with DAQmxBaseCreateDIChan or DOChan is it only possible to setup a "channel" as an entire port? Is it not possible to setup a channel as a single input or output line? Similarly, once the channel is configured is it only possible to read or write an entire port with DAQmxBaseReadDigitalU8 or WriteDigitalU8? I was expecting something similar to the DIG_out_line function used in Traditional NI-DAQ where a board number, port number, line number and state are passed so that a signal output line can be set on or off.
**Well, the ReadMe file says that USB-6008/9 is supported with both Line I/O and Port I/O. On the other hand, the documentation for DAQmxBaseCreateDOChan and DAQmxBaseCreateDIChan say for the lineGrouping parameter, "Always pass DAQmx_Val_ChanForAllLines." So your question is a good one! Perhaps one of the NI engineers can comment on this.
- Aaron
Thanks in advance for the assistance,
John Weeks
WaveMetrics, Inc.
Phone (503) 620-3001
Fax (503) 620-6754
www.wavemetrics.com

USB 6009 lock-ups?

Hello,
I'm having a strange problem with my newly aquired USB 6009. I've written an app to read the temperature from a temperature controller using the 6009 and that all works fine. However, the problem comes when I port this code into another application. The code is intended to run in a parallel loop to the main execution loop, to continuously read the temperature whilst other data is captured and process (all done in the main loop). Both applications run quite happily when separate. When I bring them together the applications sometimes, but not all the time, refuse to quit and just lock up. I have no idea what is happening as it is not a case of one loop remaining running (I've tried separate stop buttons) and they will run together quite happily. The problem only comes when I hit the button that terminates the main loop (this also triggers the other loop to stop - I'm sure this bit works as I've used the same method in another vi).
The main loop should, in theory, just close. The loop with the USB reads (using DAQmx Base) will stop and then clear the task (DAQmx Base Clear I think). Sometimes the DAQmx Base Clear runs and the program stops fine, other times it runs and the program locks, other times it locks as soon as I hit the quit button.
Any thoughts as I'm completely stumped on this one? Like I say, apart from the one button triggering both loops to terminate there is no link between the two loops.
My only thought is it could be a USB issue as the PC also has a USB keyboard and mouse. I know from my home experience, when for instance plugging in my camera, it can cause the USB to lock if, say, my USB modem is running.

See the thread
http://forums.ni.com/ni/board/message?board.id=250&message.id=13722
John Weeks
WaveMetrics, Inc.
Phone (503) 620-3001
Fax (503) 620-6754
www.wavemetrics.com

USB-6009 Sine Wave

Hi,
I am new to LabView and am having some trouble. I need to input two sine waves into a USB-6009. I have a voltmeter that should read the output. Two of the problems that I have had thus far: I can only use "On Demand" in DAQ Assistant and even when I throw the DAQ Assistant into a while loop I still do not get a readout on my voltmeter. Any suggestions? Thanks for the help.

That is confusing. You say you need to input 2 sine waves into a 6009 and that to me implies that you are doing a DAQmx Read. Then you say you have a voltmeter to read the output. That implies you are doing a DAQmx Write. If you are really doing a write from the 6009, then on demand is, of course your only choice. As the specs clearly indicate, the output of the 6009 is strictly software timed so you would need to pass a sine wave point by point and then you would have very little control over the frequency. And, again as the specs clearly state, the fastest output rate you could expect is 150Samples/sec.

Usb 6009 continuous analog output

Hi
I'm pretty new to Labview, so you may have to bear with me. I have a USB-6009 and I want to generate a continuos analog output voltage. I've got the example you have posted 'Gen Mult Volt Updates-SW Timed_LV7.1 (0 to 4).vi' working and it outputs a continuous sine wave.
In a similar manner I need to generate:
1. Ramp up voltage (and ramp down voltage): starting with a continuos constant voltage, which after a period of time linearly increases to another constant voltage, and which allows me to specify the 3 time intervals and the rate of increase.
2. Pulsations: whereby I can specify the amplitude and time interval of each pulsation
This is so that I can control voltage to a valve which regulates my pipe flow. In the example I have (one stated above), I do not understand specifically:
i. Why I need both a 'Software Loop Time (ms)' as well as 'Timeout'
ii. The 'Sinusoidal Pattern' input which seems to generate data for a sine wave- I can't get a description of that and there are no similar VIs for other waveforms; and what is the function of the two numbers it has?
iv. How do I change amplitude and time period for the wave?
iii. What does 'Index Array' do?
thank you

Hi there,
I'm guessing the VI you are using is the one from this KB:
http://digital.ni.com/public.nsf/allkb/6F2C2B49A89D685C8625711D007BDD64
i. The software timed loop control is to control the rate at which you change the voltage output. The timeout on the DAQmx Write VI is the maximum time in seconds the VI will wait to output a sample (eg. if the write buffer is full, the Write VI will wait for it to become available for 'timeout' seconds before outputting an error).
ii. The sine pattern is just an array constant of doubles that make up the sine wave voltage values, and the for loop adds an offset (of two volts) to every single one of those values. You might want to replace that entire array constant and for loop with a Simulate Signal Express VI (just search for Simulate Sig or look in the Functions >> Input palette) and convert the dynamic data output to an array of doubles. You can configure the type of waveform, amplitude, and time period from that express VI as well.
iii. Refer to previous answer.
iv. Index array returns an element of an array based on the index input. You can turn on the context help and move your mouse over functions to get more help on them.
I hope that helps!
Way S.
NI UK Applications Engineer

Usb-6009 high-speed continuous acquisition for slow control loop application

Hi,
After watching a few Youtube videos, I successfully built a control loop in LabVIEW using my USB-6009. Currently, this loop is limited by the speed my actuator can take and respond to commands, topping out at 200 Hz. This is completely sufficient for my application. My question is more regarding the wasted potential of the USB-6009 to acquire samples at a much higher rate than what would be obtained if I used a simple single sample-on-demand during every iteration of the loop.
It seems to me that having the USB-6009 continuously acquire samples and having my control loop periodically check in for the latest data when it is ready to execute would have the advantage of allowing me to average groups of samples together to lower the overall noise associated with the measurement process (I am reading voltages from an amplified photodiode).
1) Does anyone know how I would instruct the USB-6009 to continuously acquire at say 10 kHz, so that on each loop I will have 50 or so samples that can be averaged together for a more accurate measurement of my control variable? Unfortunately, I'm new to this and not too familiar with DAQmx Timing.vi.
2) I've heard that reading into a buffer can increase latency for moving data into the computer. Given the low speed of my control loop, I don't foresee this as being a problem. Is this a correct assumption? I can probably live with an extra millisecond of latency.
3) I goofed around briefly with DAQmx Timing and managed to see a buffer overflow error. Certain rare events will by necessity cause my control loop to take much longer to execute, so I cannot guarantee that occasionally during normal operation I will not overflow the buffer. Can I suppress this error so that the dialog box does not pop up and the program continues to run uninterrupted? If the buffer overflows and old data gets overwritten it isn't a big deal for me since the control loop is only concerned with the latest data anyway.
Thanks for any info!

Howdy Patrick!
Here is a picture of the front panel:
Here is the block diagram:
And I've attached a copy of the VI saved for LabVIEW 7.1.
Regards,
Barron
Applications Engineering
National Instruments
Attachments:
most recent samples.vi ‏73 KB

USB-6009 with "redy to run" datalogger SW

To get a quick and low cost solution to my data logging need, I bought a USB-6009 which ships with "ready to run" data logger software, NI Data logger. Well, I guess this SW is nice to see if you data USB-6009 works, but for anything else it seems quite useless. It seems that I am only able to log one channel at a time. Whats the use then of having 8 channels? Or am I just missing the functionality in the undocumented SW?

You can specify a series or group of channels in one of two ways:
- A colon specifies a channel range (e.g. Dev1/ai0:7 for channels 0 to 7)
- a comma seperates a group of channels in any order (e.g. Dev1/ai1,Dev1/ai4, Dev1/ai5 for channels 1, 4, and 5)
This is the standard channel string for NI-DAQmx and NI-DAQmx Base.

USB-6009 Temperature Acquisition

Hi All
I seem to have some brain fade today. I need to use the USB-6009 to with a J type thermocouple. When I hook it up the temperature is not correct and widely varies. I am getting reading from 0 to 60 C at room temperature. I need to incorporate this into another circuit for testing. I assume that I am overlooking the simple and obvious. I have tried using a DAQ Assistant and a DAQmx. Any help will be appreciated.
Thanks
Gerald

Hello Gerald,
You don't have a brain fade! I recently got in a few usb-6009's and am seeing a similar response when trying to measure temperature with thermocouples.
I don't believe this is noise as much as resolution on the usb-6009. At this point I have added resistors to bring down noise but am seeing the same "waver" that you describe (although not quite as extreme). I am looking into building a signal amplifier or alternatively purchasing a TAC80 thermocouple-to-analog converter for use with the usb-6009.
Have you had any progress with your issue?
Adzel

USB 6009 Python Control

Hello,
I am attempting to use python (with ctypes) to control my USB-6009. The goal is to write out an analog voltage and then read in the voltage through an analog input with ability to change the number of points averaged and the number of times this is repeated(sweeps) averaging the analog input array. The issue is that as we increase the number of times the voltage ramp is repeated (sweeps) we get a time out error (nidaq call failed with error -200284: 'Some or all of the samples requested have not yet been acquired). This has us confused because the sweeps are in a larger loop and the Daq function should be the same if there are 10 sweeps (works) or 1000 sweeps (crashes). Any insight would be greatly appreciated. I have included the code below for reference.
import ctypes
import numpy
from time import *
from operator import add
nidaq = ctypes.windll.nicaiu # load the DLL
# Setup some typedefs and constants
# to correspond with values in
# C:\Program Files\National Instruments\NI-DAQ\DAQmx ANSI C Dev\include\NIDAQmx.h
# Scan Settings
aoDevice = "Dev2/ao0"
aiDevice = "Dev2/ai0"
NumAvgPts = 10
NumSweeps = 50
NumSpecPts = 100
filename = '12Feb15_CO2 Test_12.txt'
Readrate = 40000.0
Samplerate = 1000
StartVolt = 0.01
FinalVolt = 1.01
voltInc = (FinalVolt - StartVolt)/NumSpecPts
# the typedefs
int32 = ctypes.c_long
uInt32 = ctypes.c_ulong
uInt64 = ctypes.c_ulonglong
float64 = ctypes.c_double
TaskHandle = uInt32
# the constants
DAQmx_Val_Cfg_Default = int32(-1)
DAQmx_Val_Volts = 10348
DAQmx_Val_Rising = 10280
DAQmx_Val_FiniteSamps = 10178
DAQmx_Val_GroupByChannel = 0
def CHK_ao( err ):
"""a simple error checking routine"""
if err < 0:
buf_size = 100
buf = ctypes.create_string_buffer('\000' * buf_size)
nidaq.DAQmxGetErrorString(err,ctypes.byref(buf),buf_size)
raise RuntimeError('nidaq call failed with error %d: %s'%(err,repr(buf.value)))
if err > 0:
buf_size = 100
buf = ctypes.create_string_buffer('\000' * buf_size)
nidaq.DAQmxGetErrorString(err,ctypes.byref(buf),buf_size)
raise RuntimeError('nidaq generated warning %d: %s'%(err,repr(buf.value)))
def CHK_ai(err):
"""a simple error checking routine"""
if err < 0:
buf_size = NumAvgPts*10
buf = ctypes.create_string_buffer('\000' * buf_size)
nidaq.DAQmxGetErrorString(err,ctypes.byref(buf),buf_size)
raise RuntimeError('nidaq call failed with error %d: %s'%(err,repr(buf.value)))
def Analog_Output():
taskHandle = TaskHandle(0)
(nidaq.DAQmxCreateTask("",ctypes.byref(taskHandle )))
(nidaq.DAQmxCreateAOVoltageChan(taskHandle,
aoDevice,
float64(0),
float64(5),
DAQmx_Val_Volts,
None))
(nidaq.DAQmxCfgSampClkTiming(taskHandle,"",float64(Samplerate),
DAQmx_Val_Rising,DAQmx_Val_FiniteSamps,
uInt64(NumAvgPts))); # means we could turn in this to continuously ramping and reading
(nidaq.DAQmxStartTask(taskHandle))
(nidaq.DAQmxWriteAnalogScalarF64(taskHandle, True, float64(10.0), float64(CurrentVolt), None))
nidaq.DAQmxStopTask( taskHandle )
nidaq.DAQmxClearTask( taskHandle )
def Analog_Input():
global average
# initialize variables
taskHandle = TaskHandle(0)
data = numpy.zeros((NumAvgPts,),dtype=numpy.float64)
# now, on with the program
CHK_ai(nidaq.DAQmxCreateTask("",ctypes.byref(taskHandle)))
CHK_ai(nidaq.DAQmxCreateAIVoltageChan(taskHandle,aiDevice,"",
DAQmx_Val_Cfg_Default,
float64(-10.0),float64(10.0),
DAQmx_Val_Volts,None))
CHK_ai(nidaq.DAQmxCfgSampClkTiming(taskHandle,"",float64(Readrate),
DAQmx_Val_Rising,DAQmx_Val_FiniteSamps,
uInt64(NumAvgPts)));
CHK_ai(nidaq.DAQmxStartTask(taskHandle))
read = int32()
CHK_ai(nidaq.DAQmxReadAnalogF64(taskHandle,NumAvgPts,float64(10.0),
DAQmx_Val_GroupByChannel,data.ctypes.data,
NumAvgPts,ctypes.byref(read),None))
#print "Acquired %d points"%(read.value)
if taskHandle.value != 0:
nidaq.DAQmxStopTask(taskHandle)
nidaq.DAQmxClearTask(taskHandle)
average = sum(data)/data.size
Thanks,
Erin
Solved!
Go to Solution.

This forum is for LabVIEW questions.

USB 6009 thermocouple noise

I'm using NI-DAQmx 7.5, Labview 7.0, and a USB-6009.
I'm trying to get a more accurate reading from my j-type thermocouple. It is now distorted with noise and jumps rapidly +/- 20 degrees around room temp without any heat being applied. When heat is applied, it climbs as it should but with the same variation. I haven't moved to the labview side of it yet, I'm still trying to get a usable reading in MAX. I have it wired as a differential input with a floating signal source. I've installed 10k ohm resistors for bias current return as instructed. Installing the resistors helped but still leaves me with the readings shown in the attached pic. I've also tried grounding my USB 6009 with no results. Please help. john
Attachments:
thermocouple reading.jpg ‏41 KB

Hi John,
What you are running into is a problem with the actual voltage resolution of your USB-6009. This device has 14-bits of resolution over a minimum range of +/- 1V. That means that the voltage resolution is (1 - (-1))V / (2^14) = 2V / (16384) = 122uV. While this is an excellent resolution for such a low cost USB device, you will still notice problems when trying to make a thermocouple measurement. The reason for that is that Thermocouples make a very small output voltage (see image below).
Common thermocouple types have the following response:
K type: 41 microVolts per degree Celsius
J type: 56 microVolts per degree Celsius
T type: 52 microVolts per degree Celsius
There are a few options for ways to get around this limitation.
Good: You could read the signal in as a voltage and then manually convert that voltage into a temperature. This would be the least accurate method, but it should allow you to average out your signal and then use the Convert Thermocouple Reading.vi to show the voltage as a temperature.
Better: If you want to keep using the USB-6009 to measure thermocouple, what you really need to do is first amplify your signal before you connect it with your device. This should increase your resolution of the thermocouple allowing you to get more accurate temperature specs. This will require some more complex programming to properly scale your measurements, but it will give you more accurate readings for relatively little cost.
Best: Opt for getting a USB device that is designed for taking temperature measurements such as the USB-9211A. This device would give you a voltage resolution of 160mV/2^24 = 9.54 nV! That's over 12500x the resolution of the USB-6009 that you currently have.
Hopefully the above information helps you better understand what is going on and why. If you have any other questions feel free to post them here.
Message Edited by Otis [DE] on 01-13-2006 11:37 AM
Message Edited by Otis [DE] on 01-13-2006 11:38 AM
Otis
Training and Certification
Product Support Engineer
National Instruments
Attachments:
761029-Thermocouple_Voltages.GIF ‏10 KB

USB-6009 labview 7.1

Hi can anybody tell me if they have had any problems running USB-6009 with Labview version 7.0? I can't get it to recongnise my device and it's behaving as if there is nothing there. Do I need version 7.1 or is there a more sinister problem afoot?
Kyle

What version of DAQmx Base are you using? The latest version, 1.4, is supported on all versions of LabView 7.0 and higher. It can be obtained using the following link:
http://digital.ni.com/softlib.nsf/websearch/941677622E793A2686256F8C0083641A?opendocument&node=132050_US

USB-6009 digital input change detection

Hi,
I am trying to acquire digital signals from an ni usb-6009 device using daqmx on labview 8.0. I need to write the signals from a port of the device to an output file only when there is a change in the signals and I am not able to do this successfully. I created a digital task in MAX and was able to select acquisition mode as '1 sample (On Demand) ' only. Any other selection for acquisition mode would result in error 200077 with the following message -
Measurements: Requested value is not a supported value for this property.
Property: SampTimingType
You Have Requested: Sample Clock
You Can Select: On Demand
I selected '1 Sample (On Demand)' acquisition mode and was able to see the channel values on running it in MAX as I rotated a device connected to the usb-6009 device. As expected the hex values on MAX were showing up as FF,7F,3F,BF and this pattern was repeated everytime I provided the input by rotating the device.
Next, I created a simple vi to use the digital task I setup on MAX. I want to be able to record the signals only when there is a change in the digital pattern from the channels.That is when there is atransition from FF to 7F to 3F and so on, the vi should write to an output file and if no change happens, it should not write to file. To do this, I explored the Timing vi and tried using the 'Change detection' mode, but that produced the same error as above.
Can anyone please suggest a way to accomplish what I am trying to do ? Any guidance will be a hugely appreciated.
Thanks
~Sej

All of that effort with sample rates, timing, change detection, etc ciuld have been avoided if you had read the specs. As you finally found out, the device only supports sftware timed i/o and no change detection. You wll have to do your change detection in software this is done with a shift register/feedback loop.

USB 6009 DAQmx Deployment

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