How to take the screen shot of my computer page by using Labview.... is there any funtions available in Labview?
How to take the screen shot of my computer page by using Labview.... is there any funtions available in Labview?
<a href="http://sine.ni.com/devzone/cda/epd/p/id/2951" target="_blank">http://sine.ni.com/devzone/cda/epd/p/id/2951</a>
You can also try searching the LAVA forums. There was a recent thread which included example code which uses .NET.
Another <a href="http://forums.ni.com/ni/board/message?board.id=170&thread.id=252582" target="_blank">thread</a> about this theme.
...Using an Elo Touch Screen with LabView Real Time
Has anyone used an Elo Touch Screen with LabView Real Time? The touch screen that we want to use interfaces using usb to the PXI host. (PXI-8195 running LabView Real Time) I have search around and can not find any information on weather the Real Time module will support the usb controlled touch screen or not.
If we are unable to use the Elo Touch Screen, what other options are available for a touch screen HMI?
...Time in LabVIEW DAQ Assistant and Write LabVIEW file
I would be extremely grateful for your assistance in helping me understand the timing in LabVIEW.
Here are the details of the system. The data acquisition is done using a simple LabVIEW 8.2 based program consisting of a DAQ Assistant VI and a Write to Measurement File VI, which writes data in TDM format (binary with XML header).
The hardware consists of a 1042Q chassis that contains 2 PXI-6133 cards. 16 transducers are connected to these 8 channel cards. The chassis is connected to a PC by means of MXI-4 fiber optic cable and a PCI-8336 card.
I would like to sample all 16 channels simultaneously at 500 kS/s for 2 secs. or 1MS/s for 0.5 secs.
When the signals were sampled at 500kS/s x 2secs., the time column looks like this when opened on DIAdem.
Serial# Time Time(in secs. when displayed in number format with 8 decimals)
1 07/10/2007 00:09:42.1406 63351158982.14060800
14 07/10/2007 00:09:42.1407 63351158982.14069760
64 07/10/2007 00:09:42.1408 63351158982.14080000
109 07/10/2007 00:09:42.1409 63351158982.14090240
The time does not change from serial 1 to 13, and only at the 14th row does it change, after which it remai...count the number of seeds using labview
I am new to labview and need to create a VI to count the number of seeds being dropped.
I understand you can do this using labview.
please can someone direct me to a tutorial or an example to do this?
I use a camera - how do you connect up the camera to work with labview?
...Labview 8 crashes when using Read Labview Measurement File
I am a new user for Labview. I installed Labview 8.0 from the CD (evaluation copy). I was just testing the sample code provided by NI. I opened the "Load from File and Display" example and I was trying to open the properties for the Read Labview Measurement File component when Labview crashed. I tried it a couple of times and everytime it happens the same way (when I double click the component or right click on it).
I am using Windows XP with all the updates done. In the Windows crash report, the application version is 22.214.171.12405.
Other problem ...Using the cFP controller with only LabVIEW and FIELDPOINT software but no LabVIEW RT
I have a cFP-2020 controller and cPF-AI-100 modules which I intend to use in a small project. I do have LabVIEW and FIELDPOINT software but I dont have LabWIEW RT software. Is it possible to use the cPF controller with only just LabVIEW? if yes, I would like to be advised how. Thanks
It is not possible to set up your system without Labview realtime module.
There are system integrators who can build a executable for you. You can search for a alliance member by using the following link; <a href="http://sine.ni.com/apps/utf8/niaa.search_display" target="_blank">http://sine.ni.com/apps/utf8/niaa.search_display</a> Or call your local NI branch office. But if you are planning to do more realtime projects in the future this wouldn't be costs effective.
Another option is to use compact fieldpoint pc controlled backplane (so there has to be a PC to control your compact fieldpoint system (not deterministic)). You can do this by using the compact fieldpoint ethernet backplane; <a href="http://sine.ni.com/nips/cds/view/p/lang/en/nid/202527" target="_blank">http://sine.ni.com/nips/cds/view/p/lang/en/nid/202527</a>
Good luck with your project, and please let me know if there are any questions,
...How can i use labview.tlb to control Labview from an external application?
I've been told by a labview engineer that i could use the file
labview.tlb located in the labview install folder to control labview
from an external application (in my case, a C# app). I'm using Labview
6.1 under Windows 2000. This article confirms that:
"ActiveX and LabVIEW"
But i've not been able to find out how to use this file to achieve
what i want. I just want to be able to open/close labview, open/close
a vi, start/stop a vi, hide/show a vi from a C# application. Th...build a DLL in LabVIEW & Use the DLL in LabVIEW
I am trying to build a DLL for the simple vi with LabVIEW and want to use the DLL in LabVIEW. is it impossible?
I wrote a vi and it have 2 terminals. one is the input for numeric dbl data type and one another is the output for numeric dbl 1D array data type.
It was built with the Application builder for LabVIEW 8.0 and DLL was created successfully.
I want to use this DLL in new vi with LabVIEW.
Call library function used. I wrote a new vi to use that DLL.
In config dialog I config each parameter for dll and connected terminals. but it doesn't work
pleas refer to the attatched file and let me know what I missed.
...Trying to use Labview Test Executive with Labview 7.1
I have an old application I wrote in Labview 5.1 using the Test Executive version 5.1. I now need to modify the program slightly for a new product. So far I have done the following:
1. Installed the Test Executive in the Labview 7.1 directory
2. Mass compiled the vi's in the LVEXEC51 folder
During the mass compile, I see a number of errors when it tries to compile the vi's in the DATABASE folder. It can't seem to find vi's related to SQL (ie Easy SQL.vi). When I try to run the Test Executive directly from the Operator.llb, I see the following errors:
&n...change a LabVIEW array outside LabVIEW and keep updated in LabVIEW
change a LabVIEW array outside LabVIEW and keep updated in LabVIEW
I am Interfacing a FrameGrabber with LabVIEW using a frame grabber
The memory managment of this FG allow you to allocate your own Array
and to give a pointer to this Array to the memory manager.
Then when you acquire with the frame grabber, the acquired image will
be directly accessible in your array.
1.I give to the FG memory manager a pointer to the Labview array
through a SDK Dll function.
2. I run the acquisition
3. I display the array
My problem is that the Array is allways displayed with it initial
val...how to use Write To Spreadsheet File in labview?
i am trying to use Write to spreadsheet file.vi from the file I/O palette, but the example in the LV help are confusing.
What i am trying to do is, that i am using statistics object to give me
- Standard deviation
- Total samples
I am using numeric indicator to display the results. Is it possible to write these in a spreadsheet file directly?
I know its possible but i am not able to do it. can someone help me with this.
I also want to append (add data in the same file without deleting the previous readings).
I have attaced the VI that i am working on.
Digital Compass new.vi:
http://forums.ni.com/attachments/ni/170/265473/1/Digital Compass new.vi
I have LV 8.0, the VI that you mailed me is not opening. Is there a way to convert it into my version file?
tell me how to do it, i will try to do that.
thanks a lot...:smileyhappy:
you guys are awesome!!
What exactly are you finding difficult about the Write to Spreadsheet File? The relevant part of the diagram is below but there isn't anything there that you can't get from the help or shipping examples.
<img src="http://forums.ni.com/attachments/ni/170/276070/1/Write%20to%20Spreadsheet%20.PNG"> Message Edited by Dennis Knutson on 10-04-2007 07:34 AM
Write to Spreadsheet .PNG:
http://forums.ni.com/attachments/ni/170/276070/1/Write to S...How to write in word document using LabView
I have a word document saved in a specific folder.i would like to add
few sentences at a particular point in the word document using LabView?
How is this possible?
thank you vry much
...Unable to install labview in the new mac using the 'labview CD for Power Mac'
I have got a 'Labview full development system for power macintosh'. I have to use labview for some application and so I tried installing labview in my imac using this CD. The CD gets ejected out by itself. I tried it in a Mac laptop. There it opened, but when I try to install it, it gave the following message: 'You can't open the application 'Install Labview' because the classic environment is no longer supported'. Please note that the macs that I used are Intel based. What is the cause of this problem? What is the solution?The version of the software is : 6.0Please do the needful.Thankyou,Pavithra Souriraj
The version you are trying to install was apparently written for Mac OS 9 or earlier, hence the reference to the Classic environment. The Classic environment is an emulation of OS 9 under OS X. However, Apple did not start using Intel processors until several years after the introduction of OS X, so they (Apple) did not develop an OS 9 emulator which will run on Intel based Macs. You cannot run LV 6 on an Intel based Mac. This is an Apple issue, not a National Instruments issue. LV 6 runs fine under OS X on a PowerPC Mac, as do several other versions.You will either need to get an older Mac or a newer version of LV. I am not sure which is the earliest version which will run on an Intel Mac.LynnUsing LV on the Mac since version 1.2
Hello Pavithra, Thank you for contacting National Instruments. Please look at this article for your ...Re: is it possible to test pic microcontroller using serial port and labview, if so any labview codes around for this??
can u plz show us the diagrams for this exampls in this pdf files
i need it so much
thx for helping
...using labviews dll's to write to hardware
I'm trying to use an external vc++ program to call some of labviews
functions in their dll's. Specifically DIO_Port_WriteInterface found
in port write. Looking closely at the function node you can see the
dll lvdaq.dll and a prototype: void DIO_Port_WriteInterface(void
*arg1, void *arg2, void *arg3, void *arg4, void *arg5);.
I can call it from vc++ by dynamically loading it but
labview/windowsXP complain that:
The value of ESP was not properly saved accross the function call.This
is usually a result of calling a function declared with one calling
convention with a function pointer dec...Steps to write data into the DAQ Card using LabView
Can u please send any sample code or steps to be followed to write/read data into the DAQ card using LabView7.1?
...how can I write VISA in labview to communicate with instrument using RS485
my instrument has a Modbus communication procotol, how can I use VISA
write or read to communicate with the instrument? Thanks!
You may need to set the transceiver mode of the IO card - which is
done either in the control panel or via an IOCTL/VISA call (depending
on the manf of the card).
...Re: LabVIEW and LabVIEW RT?
I will try to illustrate it with an example since it all will depend on the type of application you would like to implement. Let's say you would like to implement an application where you log data, maybe exchange data with databases and you acquire a bunch of data points at a time not performing any type of control and where high determinism is not needed. In this case LabVIEW for Windows work great. If you on the other hand would like to implement a closed-loop application where you need high determinism and reliability and will acquire data point by point you would use LabVIEW RT which is an add-on to LabVIEW. I.e. you need LabVIEW + LabVIEW RT when developing an RT application.
...How to interface the Labview and Simulink (Matlab) without using the "NI LabVIEW Simulation Interface Toolkit"?
I've been using the Labview for the data aquisition. And I also developed a controller in the Simulink (Matlab) environment. I'd like to control my application using both programs. How could I interface the Labview and Simulink (Matlab) without using the "NI LabVIEW Simulation Interface Toolkit"?
Thank you for posting to the National Instruments Discussion
If you are not using the Math Interface Toolkit, you may be
interested in using the MATLAB� Script Node. This allows
you to call MATLAB� commands using ActiveX and I you
can call your Simulink model from MATLAB� that way.
Here are some resources on how you can do this:
<a href="http://zone.ni.com/reference/en-XX/help/371361B-01/gmath/matlab_script_node/" target="_blank">MATLAB � Script Node LabVIEW 8.2
<a href="http://digital.ni.com/public.nsf/websearch/4475BC3CEB062C9586256D750058F14B?OpenDocument" target="_blank">How Can I Resolve MATLAB� script node and
Xmath Script Node Issues in LabVIEW?</a>
Hope this helps!
thank you for your reply. I will try to explore the option with the Script Node.
...If i have a labview .vi file(and labview) but i want to open it in a computer that doesn't have labview, how would i do it??
Okay, i have a made a labview program and save it as.vi.
Let's say that it is a program that when opened and you hit run it shows a sine wave.
Now if i wanted to open up the program without Labview, ( i don't need to modify it) on a computer that doesn't have labview. How would i go about doing this??
...Writing in sensor calibration data to my virtual channels in MAX using Labview.
System consists of a few pxi6713 cards, a 6527 digital input card and some scxi cards (1520, 1104c, 1125).
Every 3months or so we run a calibration on the testing stand which uses these cards, and the sensor ranges and physical ranges listed in MAX has to be manually entered each time.
I am looking for a way to do this automatically. This may be a problem, but we are using NI-DAQ legacy (perhaps if absolutely necessary we could goto daqmx).
I have figured out howto read virtual channel information from max correctly, but I have no understand...[Urgent]How can I write to physical memory by using LabVIEW 8.2??
I am dealing with a project related to micro-EDM. We feed the gap voltage back to a NI DAQ card (not quite sure about the series number, might not be important to this problem), and we want to use this voltage to determine the command position of the motor, which is controlled by a Delta Tau PMAC motion controller. Now the problem is, the NI DAQ card and Delta Tau PMAC controller cannot communicate directly with each other. Therefore, we want the LabVIEW to write the value of voltage to a certain physical memory address, and then let the PMAC controller read that address. Is this feasible by using LabVIEW and NI-DAQ card? Which block or library in LabVIEW shall I use to achieve that? Or is there any alternative way to do it? Thanks a million!
I have to get this done by the end of this week....if you know how to do it, please let me know. I really appreciate it! You are my lifesavor!
Duplicate post: <a href="http://forums.ni.com/ni/board/message?board.id=170&thread.id=289539&jump=true" target="_blank">http://forums.ni.com/ni/board/message?board.id=170&thread.id=289539&jump=true</a>
...I am new to LabVIEW and we have just started using LabVIEW 8 base. There is no express vi for an Arbitrary Waveform Generator. I need some help, because i have only been to the basic training.
I am new to LabVIEW and we have just started using LabVIEW 8 base. There is no express vi for an Arbitrary Waveform Generator. I need some help, because i have only been to the basic training.
I just need some help to produce code for making a VI for an " Arbitrary Waveform Generator ". Just like the express VI that is in the Profesional version of LabVIEW 8. I will be using this VI to drive some analog outputs.
...Why does the express vi Write Labview Measurement File not allow me to use the comma delimiter.
I don't usually use the express vi's but I thought I would save a bit of time and try the Write Labview Measurement File. It looked OK but my file came out as Tab delimited, not comma as I selected. I set Comma for the delimiter but it always reverts to Tab.
Needless to say I've spent more time trying to figure out whats going on, than I would have done using my normal Write characters to file :smileysad:
I must have missed something obvious, any ideas?