Usb 6009 digital input

Dear All!!
With the following vi. I'm trying to receive a 5V signal in a digital input, using a usb-6009 device.
I would like to use the 5 VCC supply, available in pin 31 of the same device and send it to pin 17, representing line0 of port0. During execution, 'm physically connecting and disconnecting these pins in order to see the difference in a led indicator. Unfortunatelly, the led is always on, even if both pins are disconnected.
Could somebody help me? I would be very pleased.
Thank you very much in advance,
Miren
Attachments:
proof.vi ‏38 KB

Hi Miren,
"the led is always on, even if both pins are disconnected"
RTFM?!
They use open collector inputs with an internal pullup resistor of 4.7k, so you actively have to pull down the input to GND to see a difference...
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

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I am currently attempting to sample two different analog inputs at different sampling rates using a USB 6009. I keep getting the 'resource reserved' error and am wondering if this is not possible using this DAQ. Questions:
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Attachments:
demo_nolvl.vi ‏27 KB

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Hi there,
I'm guessing the VI you are using is the one from this KB:
http://digital.ni.com/public.nsf/allkb/6F2C2B49A89D685C8625711D007BDD64
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You can connect analog voltages directly to the USB-6009 to be measured as long as they do not exceed the input limits (-10V to +10V).
Connecting the motor directly to the outputs is a bad idea.
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It's all on the datasheet... http://www.ni.com/pdf/products/us/20043762301101dlr.pdf
Message Edited by Troy K on 06-06-2008 02:36 PM
Troy
CLDEach snowflake in an avalanche pleads not guilty. - Stanislaw J. Lec
I haven't failed, I've found 10,000 ways that don't work - Thomas Edison
Beware of the man who won't be bothered with details. - William Feather
The greatest of faults is to be conscious of none. - Thomas Carlyle

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.
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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 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?
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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

Digital Inputs do not record over long time periods

I am running Signals Express 2009 with a USB-6009. I have a project that needs to record the states of 8 digital inputs over a 24 hour period. The inputs typically do not change state for long periods of time. When I run the project it does record and gather data if I stop it "soon"(I have gone as long as 30 min.) When I leave it running overnight it does not appear to record anything.

If you have not already, you should try turning off display updates in the "Operate »Update Signal Views While Running" menu item. Set this to Update None. Also, turn off "Prepare log data for viewing" under the Logging part in the Tools » Options dialog.
When I ran your project overnight, it ran out of memory. The first error it threw was "Not enough memory to complete this operation." The problem was that SignalExpress saved a great deal of data in memory for easy displaying while it's running, but this grows too big when it runs overnight. The second error was as follows:
Logging Stopped:
Logging was stopped because an error occurred with a Step in the Project.
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Mark E.
National Instruments
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Usb 6009 digital input

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