Similar Questions

• NEITHER USB-6501

  Hello

  Could someone give me some information about whether it is possible to use the

  NEITHER USB-6501

  As a generator PWM to control the dimming of 18 power LED function?

  calendar is not so relevant and if the pulse width can be controlled in the PC itself application the purpose would be financed

  Hello ONavarro,

  It is technically possible, but please note that USB-6501 as only software clocked e/s digital (e/s static). In other words the duty cycle of the PWM periodocity Ant you want to generate will be determined by a loop software, so depending on your system and the USB bus. I think that you will not be able to get a better rate of loop (ability to change the State of a digital line) less than some milliseconds (depending on the system).

  By example, if the loop runs at 5ms, and I want 10 steps in my PWM, this means the period will be 50ms, therefore a 20 Hz base frequency. If you can't reach 1ms, you will get 100 Hz. If you want more than 10 duty cycle value, you reduce the frequency.

  And it is NOT stable (loop software 5ms, first delta 5.8ms, then 4.9ms, 5.1ms, 6.7ms, and so on), because it is based on the software. If you need something stable and faster, choose a device with hardware synchronizing.

  Best regards

• NEITHER USB-6501 (24 channels, 8.5 my)

  Hello

  I would like to know that I can use the NI USB-6501 (24 channels, 8.5 my) to do my practice? Please take look at my sheet of practice before you answer. I hope you all can help me.

  The MyDAQ is designed to be a material cheap DAQ generalist that students can become familiar with.  NOR able to discounts for students and universities.  I think that it runs for $250 for students but has lots of features and built in applications of DMM, O-Scope, generator frequency, power and a few others.  They also did the connector a bit of a standard and plugin modules such as bread boards, you can buy.

• NEITHER USB-6501 not recognized by the system

  Hi all

  I wrote this simple application that writes and reads a SPI frame.

  My PC have Labview 8.5.1 and DAQmx 8.7.1 (the CD was provided with my unit NI USB-6501). Everything works fine.

  But now I need to distribute the application, and I need to run it from a computer that does not have LabVIEW.

  I installed the latest versions of the runtime of LV (8.6), and the 8.7.1, DAQmx software but the program crashes produce an error (code 200477).

  I tried to install a more recent DAQmx software (8.9 full, engine of execution of 8,9 only), but the situation has not changed.

  Also: I tried on two different PCs, and I launched MAX: one of them doesn't even recognize that a DAQ hardware is installed (even if Windows recognizes as a work device).

  Anyway, the two PCs return error 200477.

  Any help will be much appreciated.

  Best regards

  Is - this dev4 on the pc without LabVIEW? You can easily see the device name in MAX.

• NEITHER USB-6343 analog and digital grounds

  In the manual for the NI USB-6343, it is said that the mass input/output, analog and digital terrestrial are related, but by a small sign. For my application, I am attaching all 3 these grounds to exit the box (I'm tie all areas with physical threads). It is perhaps a silly question, but it's OK to do, correct?

  This should be OK unless there are large currents flowing on ground conductors.  If you have important currents in the ground, you have other problems that must be resolved before you connect the DAQ hardware.

  Lynn

• Type of output USB 6501 digital IO

  Hi, I'm new to this software.

  

  I use an e/s digital NI USB-6501 24 lines.

  I physically wired PIN0.7:0 to PIN1.7:0, then all PORT0 go to PORT1

  Click these buttons to table of Boolean, to set the output levels of PORT0, then having the signal wires to PORT1, which is then set accordingly, and then I want to ouput PORT1 using DAQ Assistant2 in:

  (1) an array of Boolean LED

  (2) a string indicating the value of the port in hexadecimal.

  THE PROBLEM:

  The DAQ Assistant2 outgoing data type is "table 1 d to unsigned long. The entry of the table that should receive it is "1-d array of boolean.

  So, there is a data type mismatch.

  How can I make this work? As you can see, I tried to place converters, I tried several converters, but I don't know what to do. Advice?

  Stupid DAQ Assistant.  I have no idea what is thinking want to a table.  Personally, I just use the real DAQmx API.  At least then you can say what is happening and it has less overhead.

  A couple of other things:

  You must move your controls and indicators for the acquisition of data inside the loop values.  In this way they can be updated at each iteration of the loop.

  Really, you must add a stop button.  You need a way to cleanly stop your VI and do not use the button abandon in the toolbar.

  

• Operation of USB-6501

  Hi all

  I have a brand new NI USB-6501, and I'm looking for more help with the operation.  I'm running OS X 10.11.1, LabVIEW 2013 SP 1, NI-VISA 15.0 and NOR-DAQmx Base 15.0.0.  I set up and plugged my module and get the flashing green light stable.  I ran NI MAX, found the module and renamed 'Motor_Module '.  Then, I went to my DAQmx Base of examples and found the Control.llb Interactive USB-6501 and ran the interactive VI control that is contained in this library.

  The first thing I tried was simply running the VI.  I got error-200220, device ID is not valid.  I changed the name of the device to "Motor_Module" and run the VI.  This time, I got error-200558, a task cannot contain multiple independent devices.  Create a task for each independent device.

  And here I am.  My ultimate goal is to have this output module signal collector type open to + 5 V.  Any help would be greatly appreciated.  Thank you.

  Hi Sullivnc,

  I would recommend you look at a few examples in the Finder for example of OR. Under input and output hardware, there is a folder for DAQmx who has a record for a digital output which has some useful examples. If you do continuous or left over, you can add more stuff to your code as a clear task DAQmx, vi DAQmx Timing, and/or vi DAQmx task is made.

• Update firmware for USB-6501 with 3.4.0 driver?

  Hello

  I am wanting to use the 3.4.0 NI DAQ driver with a USB-6501 and finds that the firmware is incompatible with the driver. The most recent driver that I used was the basic driver 2.1, unfortunately, the software that I use to send signals to the USB-6501 requires libraries to the 3.4.0 pilot.

  Y at - it a firmware available that is compatible with the 3.4.0 driver DAQ for USB-6501 device?

  I see that, after you have improved your DAQmx Base 2.1 to 3.4.0 drivers he said that the firmware on the USB-6501 is incompatible.

  If you go through this knowledge base, it will show you exactly how to get the firmware compatible with DAQmx Base 3.4.0. In particular, near the bottom, it shows how to perform this update.

• NI USB-6501 digital output problem

  Hello

  I use DASYLab v.11 and I'm working on an interface with the NI USB-6501 where I'm putting a digital high on four ports.

  With the module "NOR-DAQmx - digital input", I managed to read the digital inputs of the ' NI USB-6501 ".»

  It's only the "NOR-DAQmx - digital output" I can't go to work.

  Using 'NI MAX' of NOR I have easily can emmit my four LEDs in the way of my High/Low ports.

  But not with DASYLab. When you use DASYLab tension on the ports remains unchanged.

  Now, I have a switch module, generating 5/0, directly connected to the digital output module, which is assigned to my four output ports for my task.

  I also tried with a module of relay between the two without success. I also tried to use 1.5 above instead of 5 without success.

  I use the option 'Bus (0/5 supply) for the module "Digital output".

  "NI Max", I configured the ports as "active drive.

  Any suggestion of what I might be missing?

  Thank you

  Martin

  Hmm, four ports, or four lines?

  A port consists of eight lines. Each line can control an LED (ON / OFF ~ 0/5V).

  If you have created a task to dig-out to control a port, 5V to this port sending sets all lines of this port to 'high '.

  You need to 255 for each line one too high port (at the bit level: 128 + 64 + 32 + 16 + 8 + 4 + 2 + 1).<- eight="">

  Or, you can create a dig out tasks to control four lines of a specific port.

  Four lanes of the EEG DAQmx DigOut module.

  Each of the channels of the modul will feed a single line of the task/device.

  Four switches will then turn the lights, or turn off.

  Make sure, that the 'bitposition' is the number of correct line (see picture).

• USB-6501 384 bit synchronized digital output signals

  I need three digital signals (please see the attached file) to control a device, a signal is the clock signal, one is a continuous data signal 384 bit and another strobe signal that informs the device start and stop data. I have a USB-6501, this task can be achieved? I don't know how to write a 384-bit with DAQmx write signal, because it seems to support up to 32 bits. And it will be difficult to synchronize?

  Thank you!

  Hello the Stork

  If you send 384 bits sequentially in a digital line; and running a timed software application, this would be possible (NI USB-6501 is a programmed software). See the example VI included below. In addition, please note that avoiding the nondeterministic East and will depend on the speed of your system. If you want to continue your application with one of our DIO cards that provide hardware timing capabilities; Please see the link below for more information about these devices.

  Best regards

  M Ali

  Technical sales engineer

  National Instruments

  www.NI.com/support

• USB-6501 and opto-coupler SFH615A

  Hello

  I'm driving an opto-coupler (Siemens SFH615A - spec link attached) using the USB-6501. I am really a beginner and I am looking

  help on how I can connect it. I have tried a few options already but no luck.

  http://docs-Europe.Electrocomponents.com/WebDocs/009C/0900766b8009c194.PDF

  I use a Servo-Drive in a project, a motor drive. Unfortuantely USB-6501 turns out logically lines high on the servo-controller startup is

  receipt of a signal. I hope I can pass the INHIBITION of the servo drive line, through the opto-Coupler, so when you start 6501 will cause the optocoupler

  circuit close to inauguration of the line inhibit preventing displacement engine. The labview program will make the logic of the bass line to allow the engine to move.

  Looking at the manual of the USB-6501 and previous questions, there are 2 ways to do this, but working on resistance, values etc. required is

  still a bit beyond me, and unfortunately I'm a bit stuck for the moment.

  Any help would be greatly appreciated, thank you.

  OK got it works, I hope it will be useful for others.

  My problem, I think, have no idea really, is the impedance of the I/O device. Despite everything, I used a buffer of gain of the unit with the help of the

  Intersil ICL7611 powered by the + 5V line with the line of digital output connected the + IN the axis of the ICL7611. On the output, I have a

  Resistance 120 ohm before the opto SFH615A. Opto is open beginning 6501 and high but closed low logic logic. Happy days until the

  the next problem happens

• Best way to generate the software clock for USB-6501 of Measurement Studio for c# VS2008

  Hi all

  I wonder if there is a better way to generate a clock software for USB-6501 of Measurement Studio for VS2008 in C Sharp?

  I have developed a clock using C Sharp "Thread.Sleep (msecPauseTime)"; and statements to switch digital output high and low. There are a few things I noticed in creating a software clock in this way:

  1. The smallest delay by the Thread.Sleep command time is 1 millisecond (which means higher clock period is 2 msec-500 Hz, not holding not ball account no. 2 below).
  2. Sometimes the delay I see on an oscilloscope is considerably longer than the delay that I specified in the sleep command.

  In my application, I create signals (a clock, a latch enable and data series) to control what an attenuator step through the USB-6501 RF connected to a USB 2.0 on my computer. This particular step RF attenuator can accept clocks with frequencies up to 10 MHz, so I would like to generate a software clock (without having to connect to an external clock to a line of input on the USB-6501) which is closest to this maximum frequency, and I think that the USB2.0 line could handle clock speeds over 500 Hz. Also, I would like to know why the delays that I see on the scope are sometimes longer than the time specified by the Thread.Sleep command. Is it caused by the suspension of the execution of my program processor for something else, as I suspect? Of course, this isn't a big deal, because it does not affect the time as my serial data and pieces change compared to my clock. However, I would like to know why it does this.

  I appreciate your help.

  Thank you

  Jonathan Becker

  Doctoral research engineer

  Carnegie Mellon Silicon Valley

  Jonathan,

  Since the USB-6501 DIO is software programmed, you are at the mercy of the planning of the operating system and won't be able to work reliably with an external clock in the software.

  You can try to set the priority of your thread 'generation of clock' to improve performance, however, because Windows is not a deterministic operating system, there are still no guarantees.  Operating systems are not required to honor the priority of threads.  You can find examples and information on the definition of the priorities of the threads in c# here:

  http://msdn.Microsoft.com/en-us/library/system.Threading.thread.priority.aspx

  Kind regards

• USB-6501 - impossible to find a basic example of Labview

  Hello

  I recently bought a USB-6501 card and I used it in my own succesfully end and C++ programs using the DAQmx drivers.

  Then I tried to move to Labview 2009 (I never used Labview) so I looked for a simple example.

  I tried to boot from the example 'interactive Control Panel' (http://digital.ni.com/public.nsf/allkb/AF0F31EE5D2AD23F862573140009D7C2?OpenDocument).

  I had to install the 'DAQmx Base' for him to start, as described in the previous link. now it begins (before Labview attempted to get a few missing .vi) but I get a message "error 200220 occurred at an unidentified locatio.

  Then I realized this example is 'old' (as explained here: http://forums.ni.com/ni/board/message?board.id=170&thread.id=209247), and it is suggested to look for a new one in example Finder ' entry-level equipment / output-> DAQmx-> Digital measurement (or generation)-> read Dig Port.VI.

  I tried, but along the way ' entry-level equipment / output-> DAQmx-> "only a folder named"Analog Measurement\Voltage"exists.

  Also in the search for 'Reading dig Port.VI' does not work.

  I've already spent many hours in this research and tent and the fact that I am not able to find not even a basic example, it is quite frustrating and it is making me give up the idea of using Labview.

  Please can anyone give me any suggestions where find/download an example simple and minimum to use my USB6501 in Labview 2009?

  Thank you

  Scipione.

  First, install DAQmx Base was a mistake. Uninstall it and then install the Driver-OR-DAQmx. The driver must be installed after the installation of LabVIEW. After installation, make sure that the device is listed in MAX under "DAQmx devices. If it is not, your installation is still not correct.

  To search for example LabVIEW, see help > find examples. Under Input and Output hardware > DAQmx, you will find the digital generation and numerical measures. You have to look at the simple, timed software examples such as read write dig Chan, writing Port to dig, dig chan, reading Dig Port. You also have the option to use the DAQ Assistant.

• USB-6008, USB-6501 and Embarcadero C++

  Hello NEITHER and NOR users,.

  I spent a considerable amount of money several years ago on a number of devices USB-6008 and USB-6501 for a class that I teach on interfacing the simulations with realworld sensors and actuators.  Write us code using Embarcadero C ++ Builder and we wrote the code to interface with the jury of EZIO AD / DA via RS - 232.  The EZIO is much too slow and limited.  Given advertising NOR, we bought these boards, but after several attempts to get some information OR on the way to talk to these devices directly via C++, we have yet no valid response.  No, I don't want to LabView or any additional expenses.  I just want to talk to them directly.

  OR: are you ready to help with this, or not?  If this is not the case, although wanting to refund these purchases.  Announce as being accessible from C++, but you are not willing to provide any help of substance to this day...

  Yes, I am self-taught, write code, and old-school enough to feel that I have a right to know how to talk to all the devices I buy.  I confess my ignorance, but I'm sick and tired of secret corporate and misleading advertising.

  Can someone please provide me with enough example of code to start.  That's what we wrote for the EZIO:

  http://www.Duke.edu/Web/ISIS/Gessler/Borland/RealWorld-Ezio.htm

  We would like to start writing similar code for these materials of NEITHER.  If possible, we can buy more.  If this is not the case, these cards are useless.

  Kind regards

  Nick

  Nicholas Gessler, PhD.

  Nick,

  When you have installed the DAQmx drivers to communicate with the 6008 and 6501, I assume you also installed programming examples? It is here that they are on my XP machine: C:\Documents and Settings\All Users\Documents\National Instruments\NI-DAQ\Examples\DAQmx ANSI C.  I don't think that Embarcadero C++ Builder is one of the languages supported, so you'll need to twist your compiler, but it should give you a good start.

  Tom

• Generate N samples with NI USB 6501?

  Hi all

  I would use my 6501 NI USB DAQ (simple DAQ with 24 DIO) in order to generate a 16 - bit model. Using the DAQ assistant, I'm allowed to select "1 sample (on request)", 'Samples N' or 'samples continues. " But, unless I choose the first option, I get an error stating that I can choose only "1 sample (on request).

  What is a 6501 insurmountable limit?

  Thank you

  xdaf,

  Found this statement in the docs for 6501.  "All samples of the guidelines and updates lines are timed by the software.'".  I would say that it will only work in mode "1 sample on request.