Similar Questions

• Cloning a hard drive using LabVIEW

  I'm trying to clone my laptop 476 GB HDD for a 450 GB SSD.  The data on the laptop HARD drive are about 350 GB total, so there should be.  Each commercial application, I've tried has failed to be cloned for one reason or another.

  So I thought, ' Hey, I have a development environment, I'll do my own cloning software in LabVIEW!  I understand that sector-by-sector copy of data is extremely low, but is it possible to do this in LabVIEW?  My research drew a blank.

  Thank you

  Malcolm

  Yes, unfortunately you have almost 0 chance to be able to do it using LabVIEW (except trying to hang in an application that does) as LabVIEW is a high too high level language - all file system operations pass by and get handled by the operating system.

  As others have said, you should reduce the partition first, before you can move the disk - many tools better cloning can do for you. Unfortunately, I don't remember the name of the tool, I used to do it on my laptop but I certainly heard of the Acronis software before. Make a copy of the file in the operating system will not work because it won't copy things like the boot sector information.

  There are also a few layouts guard/traps around moving a HDD to SSD (for most around things like sector sizes) - it is useful to have a read around this before you start.

• Screenshot of Tektronix MSO4104B using LabVIEW

  I am trying to acquire a screenshot of an oscilloscope Tektronix MSO4104B using LabVIEW. I am currently able to collect data from the device and have a waveform displayed on my front of VI. However, for various reasons, our preference is to capture the actual screen shot of the scope.

  I have reviewed the reference for programmers for this camera and have done countless searches on Google for an answer, but have not been able to find a solution. It seems that a few people were able to reach on OTHER Tek scopes by sending a hard copy through the port of communication (GPIB, USB, Ethernet, etc.), but according to the reference of programmers for this particular device, it seems that he will send a paper copy of an installed printer, rather than simply as a stream of data to the port which can be read using VISA controls.

  The other solution I've seen is to record the screen turned to a flash drive, and then copy the file via the port to the PC. However, none of these solutions seems to be available on this device... it's one of the more advanced scopes makes Tek... I can't believe it's so hard! Help, please!

  
  

• waveform, with an average of results using labview to O-scope

  Hello fellow engineers! I'm a first-yeargraduatestudent in CHEE at the University of Houston. Basically, I know nothing about labview. I am trying to program an application that looks like this - I collect a waveform of the signal of O-scope. This waveform does not change its characteristic shape. I need to find the wave form average of waveforms of N (100 for example). Thus, the slight changes (or noise) in the feature of form during the period mustbeaveraged out and I need to have a resultant waveform that represents the average waveform over a period. So, basically, I'm collecting the wave several times (for example 100) on a single period. The O-scope that I use now is Tektronix TDS 2024 B. It communicates with the computer via USB. The version of labview is 8.5. For now, I am able to communicate with the computer using our o-scope through labview. I already downloaded the driver of instruments of your Web site. It turns out that the program can give me only the average result I can get directly from o-scope manually. I need to have more say on average (100) using labview. I wrote a program that relies on the instrument driver that is downloaded on your website (for loop part is average, the waveform). The program that I modified and an instrument driver are attached. The program cannot be fully open, if the driver is not put in the right place in the labview (under lib inst.) When I run the program, the average waveform does not appear on the front panal and signal waveform file is not saved correctly. Is there someone can find where I did wrong and it develop for me? Because I barely know Labview, it will be even better if you can add an image or program that you have changed. I'm waiting for your creative ideas.
   
  With the best regards,.
  --
  Weiye

  
  

• you want to send data using labVIEW to arduino using write visa and the process and to take action using arduino. A

  I want to send data using labVIEW to arduino using write visa and the process and to take action using arduino. After that, I want to arduino to send out necessary via a serial port to labVIEW which should be read using visa read and store in a chain. While I am able to write or read both individually, I can't do it consecutively. I used advanced read and write vi for checking my code, but nothing is helping. The wrong bed 'time delay before execution. " Please let me know where I can go wrong. Also is it possible to write code for hx711 using labVIEW

  1. you need not "\n" on your orders println().  This command adds an end of line character already in the message.

  2. you get the error because you have a loop around your reading.  After the first reading (well technically, the second because of you add an extra line end character), there is nothing left in the port.  As a result, you will get the timeout.

  3. you should really consider using a Structure of the event.  This way you just don't write and read when you press the Write button and you can also use the structure of the event to make the loop to stop.  I also go up to close the port inside the stop-> value Change event.

  

• How to check the CPU usage and paging using LabVIEW

  Hi guys,.

  I build an application that is used to check the CPU usage and paging using LabVIEW. How can I do?

  any help, suggestions or advice will be greatly appreciated...

  Kind regards

  Prashant

  Hello

  If you plan to build your app for Windows, you can use .NET classes. (System.PerformanceCounter), there is a simple example with LabVIEW:

  C:\Program NIUninstaller Instruments\LabVIEW 2010\examples\comm\dotnet\SimpleTaskMonitor.llb

  

  Also, you have several screws that you can use to verify information about the processor.

  

  Kind regards

• Programmatically insert step of ActiveX/COM using LabVIEW

  Hello

  I would like to be able to create sequences like the one set using LabVIEW.

  This sequence has only 2 steps, a LabVIEW VI call and an adapter of ActiveX/COM call.

  I was able to do using an adaptation of the code here: https://decibel.ni.com/content/docs/DOC-36337

  However, I am struggling to add the step of the ActiveX/COM.

  Any help would be welcome.

  Thank you

  Of course, there is a way, if you look for it

  Since you have an existing 'Step' class object, you can also get a 'Module' object for her. Subsequently, you will need to specify that it is an ActiveX module. If you do not know which - probably you need to get the object 'map' somehow... Our case is simpler, so just cast to the ActiveX module and... to set certain properties like ServerId, ActiveXReferenceExpr and so on.

  I've attached an example for you. Interesting thing is the ServerId - I just read this chain of the TS for similar action and reused it here so do not ask me how to get automatically

  You will need to complete your 'properties' as 'file' - but I'll gracefully leave this work for you =.

  Best regards

• Time real ADC/DAC for SMPS by using Labview and USB

  Hi all

  I asked the Sales Department of this same question, so here's a two-pronged approach:

  I am reserching a control algorithm for power switching, and so far, its performance simulations seem to be good.  Now, the goal is to implement the circuit from the experimental data.

  I've seen several NI USB DAQ boxes that seem to have the performance, I'm looking for (for example, the box USB-6211 a sampling rate and resolution I need).

  The control algorithm uses the following mathematical functions: add/sub/mult/div/exhibitor and derivative/integral.

  My question is this: is "strong enough" Labview take four-channel data 250Ksps, crunches the numbers in an equation and spits out the answer to an analogue on the channel, while time REAL?  I'm looking for a rate of analog output of ~ 100 kHz.

  Thank you for any suggestions you have!

  -Rick

  Hey,.

  So if you were trying just to perform an input or output, then the box USB-6211 would certainly be able to treat it as the machine clock could manage the inputs/outputs, no software. However, what you are wanting to do, basically a feedback system, he will have to avoid (at least to a USB device) because you need to be able to specify Active which is the output. So, for this reason alone and the fact that you want out of 100 kHz, this device and the USB devices in general will be not an option any what software you use, LabVIEW or otherwise. On another note, you want to make sounds more like live update, not in real time, which is more on the jitter. Bottom line, for these kinds of requirements, you might need to move to an FPGA card, something like the NI PCIe-7841R would work. It's more expensive, but for your needs, FPGA will be the only option and it comes down to the latency of the bus, but also the response time of software. With FPGA, as shown in the first scheme of the following document, you basically close your software through hardware loop.

  Basics of FPGA

  http://www.NI.com/white-paper/6983/en

  -Ryan S.

• How to view mdsplus data using labview

  I posted this question in the Council of Labview, but seems that nobody does it so far. I don't know what is the best place to ask this question. So I reposted here.  Thank you very much.

  I am a newbie to Labview. I'm writing a few vi to display and write data to Mdsplus.  I downloaded Mdsplus(labview) can discover Mdsplus functions, like mdsconnect, mdsput, ect, in vi to call a library function. But I have no ideal how to use it. I tried to use the Mdsconnect function to connect to a machine, but it still gives me an error like: Labview: an exception occurred in the external code that is called by a call library function node...  I was looking for help on the internet documents, but could not find anything useful. Could you please help me with this problem?  If you have examples of these vi, or teach me how it, it would be very useful. I'm using Labview 8 (windows). I would appreciate your help!  Looking forward for your reply.

  Oops,

  I attached properly in the previous post.

  Greg

• float to bytes conversion using labview

  in the project of the University to number of float serialy using labview. I don't know how to convert his individual bytes actualy I want to encode float in its float bytes. kindly help me in this regard

  Send "bytes" is usually done in the form of strings. Just use catalogued with the disconnected type entry (or use "flatten chain").

  To get started, simple would be to use the finder example in LabVIEW and search for serial communications.

• How to program using Labview to an accelerometer

  Hello:

  I got an accelerometer which has digital I2C/SPI serial interface, so I bought a USB - I2C converter for data acquisition. I would like to know if I can use Labview to acquire data of com port and also program for the accelerometer to capture the data of the axis z. I have a box of white myDAQ NOR but SB. says that it is not an appropriate device to acquire before I2C/SPI signals. The datasheet of the accelerometer is in the accessory and the specification of the converter is this link: http://www.robot-electronics.co.uk/htm/usb_iss_tech.htm .

  I hope someone can solve the problem for me. It is best to use the software labview for me because most of my project work is based on that.

  Best regards

  The f

  Good and bad news.  You have an accelerometer that 'speaks' I2C or USB to I2C converter, so if you connect both of them, you can send 'orders' of your accelerometer easily of LabVIEW by using communication series live that's the good news.  The bad news is that it seems that you need to address your accelerometer using calls very low level, a work, I certainly don't want to face!  This crys on a 'pilot', a middle piece of equipment that does all the "hard work" to take a high level order ("Please tell me the acceleration") and he translates things your device includes (including the Setup program, records, calendar, packing and unpacking of the bits and bytes, etc.).

  Bob Schor

• Thesis using Labview software

  Good Aftrnoon.

  My thesis is based on software developed by using Labview.  Can anyone suggest the best way to write the main sections?

  For example, how to describe the experimental flow? My ideas have been use explanatory, take the labview code print screens describing what each of the subVIs. Does anyone have experience in this field?  Or if you can share a thesis based on LabView program written, it would be ideal for reference. Thanks in advance

  Kiryl

  If your project markers are not familiar with LabVIEW, then frankly they should not be monitored a LabVIEW project.

  In the same way that you would not be supposed to literally print code of entire base of a project in a written language, you don't need to go into the same level of detail with a LabVIEW project.

  You can document your code with system diagrams, annotate them extracts of interesting pieces of code, writing pseudocode to illustrate the feature.

• Deal with failure when using LabVIEW 2011 and DSC MODBUS communication

  I'm currently reading from operating records a PLC with MODBUS/TCP. I confirmed that the PLC will update the values and in response to a MODBUS communication correctly by using a third-party program called Modbus Poll. However, when I try to query the PLC using the LabVIEW shared variable engine, I am unable to read the values of the same addresses that I consult with Modbus Poll.

  My installation is simply to a PC directly connected to the controller via Ethernet without a router between the two. I'm using LabVIEW 2011 SP1 with the DSC module.

  I opened the Manager of distributed systems OR to display the State of all variables in the Modbus Library that I created, and I noticed that the ILO CommFail permanently the value 'true '. All other variables with a 'read' access mode signal "failure of process". I tried to restart the process and stop and start the local variable engine without success. I also restarted my computer several times to see if any services did not exist, but this does not appear to have solved the problem.

  Finally, I resorted to listening to communications on the network card I have the PLC connected via Ethernet using Wireshark and found that while Modbus Poll communicates with PLC, number of MODBUS and TCP packet is sent and received. However, when using only LabVIEW or the DSM OR communicate with the controller, there don't seem to be any communication on the network card.

  Something that may be interesting to note is that I could communicate with the PLC and to read values with the DSM just once, when I understood everything first what address I should be reading of. All of this has stopped working shortly after. Prior to this, 'CommFail' was not generally set to 'true' with my current setup. Thinking it was my firewall, I have since disabled my firewall, but this seems to have had no effect on the problem either.

  Any help on this would be appreciated.

  So, I thought about it. It turns out that the IP address of the server i/o MODBUS must be set to the address of the MODBUS slave, not the local computer. The address of the i/o MODBUS server is defined by the navigation in the Explorer window projects, expanding the variable engine shared library for MODBUS and right click on the server MODBUS (for example Modbus1) item and select Properties.

  In addition, the addresses seem to be shifted by + 1.

  Thanks for the tip so.

• Go to the PHP website using Labview 8

  Hi people,

  I'm writing a vi LV8 to retrieve data from a Web site. The first site I've played with just had a text output so a simple:

  -OpenTCPConnection (for 'www.hpc.ncep.noaa.gov')

  -WriteTCP:

  -line 1: 'GET heat_index_MEAN/hitable_east.txt '.

  -line 2: "" Host: www.hpc.ncep.noaa.gov".

  -line 3:

  -ReadTCP

  It worked perfectly fine.

  But this isn't really the data I want. I want the data displayed on the Web site:

  http://forecast.weather.gov/MapClick.php?W0=t&W1=TD&W2=Hi&w3=sfcwind&w3u=1&W4=sky&W5=pop&W6=RH&W7=th... 96 & textField2 =-77.48167 & site = all & unit = 0 & dd = 0 & bw = 0

  But, when I try the same calls I get the error messages like:

  Query HTTP/1.0 400 Bad server: AkamaiGHost Mime-Version: 1.0 Content-Type: text/html Content-Length: 216 Expires: Sunday 12 August 2012 17:40:25 GMT Date: Sunday 12 August 2012 17:40:25 GMT connection: close

  Bad request

  Your browser has requested that this server could not understand.

  Reference #7.9f931160.1344793225.0

  I don't know enough about HTML or PHP to tell if I have a HTML or PHP problem; and what I have to understand to move forward. More precisely:

  -can you tell if it is a PHP or HTML problem in my code?

  -If Yes, which?

  -I can access a Web site (which uses PHP) LabVIEW?

  -what I have to learn more about PHP to proceed?

  -J' tried to send a command "OPTIONS" of HTML, but I received very similar eror messages (not a quesstion)

  -the site has an XML option that displays data as text/XML, but it also seems to use PHP, if I get the same errors with my code (not an issue)

  -any ideas on how to use labview to read data from this site?

  Thank you, in advance...

  
  

• Retrieve the names of the measures of the stage using LabVIEW

  How retrieve you the names of the measures a digital multiple of the step using LabVIEW?

  I have built a vi to be called TestStand and will pass the "ThisContext', but the vi is not complie.  That's how far I got.  The vi is attached.  The error message is:

  "The method selected in the invoke node is invalid or no method has been chosen.  Click on the invoke node and select a method. »

  My vi is an attempt to write the code of

  Normal
  0

  fake
  fake
  fake

  MicrosoftInternetExplorer4

  / * Style definitions * /.
  table. MsoNormalTable
  {mso-style-name: "Table Normal";}
  MSO-knew-rowband-size: 0;
  MSO-knew-colband-size: 0;
  MSO-style - noshow:yes;
  "mso-style-parent:" ";" "
  MSO-padding-alt: 0 to 5.4pt 0 to 5.4pt;
  MSO-para-margin: 0;
  MSO-para-margin-bottom: .0001pt;
  MSO-pagination: widow-orphan;
  do-size: 10.0pt;
  do-family: "Times New Roman";
  MSO-ansi-language: #0400;
  mso-fareast-language: #0400;
  mso-bidi-language: #0400 ;}

  message.ID = 10653 in LabVIEW.  More precisely:

  Normal
  0

  fake
  fake
  fake

  MicrosoftInternetExplorer4

  / * Style definitions * /.
  table. MsoNormalTable
  {mso-style-name: "Table Normal";}
  MSO-knew-rowband-size: 0;
  MSO-knew-colband-size: 0;
  MSO-style - noshow:yes;
  "mso-style-parent:" ";" "
  MSO-padding-alt: 0 to 5.4pt 0 to 5.4pt;
  MSO-para-margin: 0;
  MSO-para-margin-bottom: .0001pt;
  MSO-pagination: widow-orphan;
  do-size: 10.0pt;
  do-family: "Times New Roman";
  MSO-ansi-language: #0400;
  mso-fareast-language: #0400;
  mso-bidi-language: #0400 ;}

  Dim MyStep ACE [step]
  Dim MyMeasurement As PropertyObject

  MyStep =
  seqContext.AsPropertyObject.GetPropertyObject ("Step", 0)
  MyMeasurement =
  MyStep.AsPropertyObject.GetPropertyObject ("Result.Measurement [0]", 0 ")

  MsgBox (MyMeasurement.Name)

  Can someone help me complete the vi?

  Thank you

  Thank you very much.

  A small change to the vi required.