AO then AI with LabVIEW

What I need to do - using a PCI-1611E - is output an analog waveform for a ceratin length of time, wait, and then read in an anolog signal. The system needs to work in the millisecond ranges, and the triggering needs to be detailed. If anybody can give me an idea of how to go about this I would be most grateful.

The actual device is part of the e-series range, it is a PCI version hence the specification of PCI - you'll find it under NI 6111E - I'm afraid my fingers ran away with my typing before. Also the manual that ships with it describes it as a PCI-6111E. The other information I should have mentioned was that I'm using LabVIEW to program my application.

Similar Messages

Can i download google map and then interface with labview?

i intend to interface labview with google map and indicate my required position on it.i need help on how to accomplish this?can i download google map and then interface with labview?

Hi,
The Example avalable on following link (C:\Program Files\National Instruments\LabVIEW 2009\examples\comm\axevent.llb\ActiveX Event Callback for IE.vi) on your PC, and using of Googlr map API u can indicate your position.document are avalable on following link (http://code.google.com/apis/maps/documentation/staticmaps/)
I hope this is help for u..
Siva
Sivaraj M.S
CLD

Where can I found hardware to get analog signal from VCR and work with labview and then sample this signal in very high frequency?

I am trying to build a Digital Video Recorder using Labview. The problem is that I found that Labview sample the signal in the order of milisecond. I wanted it to be in the order of microseconds. Also I am looking for a cheap Hardware solution if it is possible

Your question does not make a lot of sense to me, so I will just point out a few things.
1. The PCI-1411 works well with VCR signals. It has a BNC connector as well as a S-Video connector. The price is under $1000, so it is fairly reasonable. The amount of time you save getting it to work with LabVIEW is worth any extra cost.
2. The PCI-1411 is sampling three colors at 30 frames per second, with an image resolution of 640x480. This is the best resolution you are likely to get from a VCR signal. The sampling rate for each byte in the image is about 28 MB/sec. This is in the microsecond range that you are looking for, I think. If you are only interested in the raw signal instead of the image, you could look at the high speed digitizing boards NI sell
s that acquire at higher rates.
If this information isn't really what you were looking for, perhaps you could clarify your question.
Bruce
Bruce Ammons
Ammons Engineering

Open and close multisim contact with LabVIEW

Can I open and close multisim contact with labview and read the receptor estatus (p.e. lamp)?
Thanks.
Attachments:
Dibujo.JPG ‏13 KB

Hi Guddan,
I created a RFC having a query which is taking a long time to execute. So i want to close RFC connection with portals which is via java connector(JCO) before that query and open the connction again after that query.
I guess i will need to understand your requirement a little more in detail, as i understand you have an RFC which has a query within to fetch some data and is taking a long time to do so. In the meantime you don't want to keep the connection open?
My question would be, Is the role of this RFC to only execute the query and fetch the data or does it do something else?
If it does other things and these are independent of the query execution, then you can span a parallel call within the RFC to execute the query and in the meantime the RFC does the other things (or vice versa) hence reducing the overall time taken.
If the sole purpose of this RFC is to execute the query, then you will not be able(i mean to say there is no simple and direct way of doing this) to close the connection after the Query is started and re-establish the connection after its execution, for a simple reason that - how will you know if the query has completed it's execution, so that you can establish the connection back.
Alternate solutions, make this a two way asynchronous call, 1) You invoke the RFC asynchronously and close the connection, the RFC in turn will execute the query and transfer the data to JCO via another RFC call.
If this needs to be a synchronous call, then you will need to optimize the query to its best.
Regards,
Chen

How can I create a scene and move 3D models in INSIGHT with Labview?

Hi!
I need some help in doing a LabView application. What i have to do is controlling a 3D model represented in Insight with Labview. Something similar like the six-axis-robot example. I follow the insight configuration wizard, but nothing moves. Comparing the ".cis" files in my program and the one from the six-axis-robot, i found that in the six-axis-robot file contains something called localsystem and the one made by me, doesn't. Can be this the problem? How can I make it work? I would need some kind of step-by-step response, because i'am a beginner with Insight and 3D models. Thanks in advance!
Regards!
Juan

Thanks for the advice!
I'm actually finding the next problem. Although in my VRML file the objects are defined separately in a jerarchy tree, I can't move(rotate, translate) each object individually. I have noticed that when i define a new local system and asign it the points of the object i want move in the way you explain (right click, and then dragging the points to the new local axis), the movement of this object is dependent of the other local systems i have defined for other objects , specially if the slave nodes of the .cis file has a lower numeration than the object i want to move. The fact is, the movements assigned , for example to the nodes 1 to 100, will affect to the rest of the nodes if i also define for the rest of the nodes other movements. How can i solve this? I send you my .cis file, just in case my explanation is not enough clear. In this file you can see that movements assigned to nodes 1 to 4078, will also affect to nodes 4079 to 7168, and what i would like to do is define a movement for each obeject independently.
Thanks again!
Attachments:
ring.zip ‏2 KB

Calling a VI which uses "system exec.vi" with LabVIEW run-time engine as adapter

Hi,
My TestStand sequence calls a VI which includes a call to "system exec.vi". When I try to load it in TestStand and if LabVIEW adapter is set to run-time engine, I get an error message "Unable to load Vi...". If I switch the adapter to "Development system", then it works fine.
Is there any way to use "system exec.vi" in a VI which is called in TestStand with LabVIEW run-time ?
Thanks,
Alex
Solved!
Go to Solution.

Hi Alex,
In you case, you are getting a -18002 error.
The reason is explained in the following link:
-18002 Errors in TestStand
http://digital.ni.com/public.nsf/allkb/D82FEAF0B4BA293A862575710053E252?OpenDocument
Please have a look at the 2nd reason. This is your case.
Hope it helps,
Regrads
Julien De Freitas / Applications Engineer / Certified LabVIEW Developer (CLD)
National Instruments Switzerland

How do you use Synergy 7.1 with LabVIEW?

My company has reciently installed and configured IBM Rational Synergy 7.1 to be used as our Source Code Control tool. I have installed the appropriate Microsoft Source Code Control Interface so that Synergy will show up in LabVIEW and it does show up in the "Source Control" options window.
However when I select Synergy as my source control tool it does the following:
1. Brings up the login window - I am able to login with no problem
2. Brings up a dialog allowing me to select the project to work on, and after I select the project I get two errors...
one from Synergy: "The workspace/project you want to add to IBM Rational Synergy is not under the work area path 'C:\xxx"
(where xxx is my work area for the Synergy project I selected)
then one from LabVIEW: "Error -2941 occured at prefPage_Source Control.vi An error occured trying to get the source control project path. Possible reasons: LabVIEW: The source control provider does not support the specified operation."
I first tried this on an earlier version of Synergy that matched what is being used in:
http://digital.ni.com/public.nsf/allkb/16D37CCC8659123F8625720500087DB4
But I was getting pretty much the same errors back then too. It seems like it should work in LabVIEW, I just have no idea what I am doing wrong!
Anyone out there successfully using LabVIEW with Synergy????
Thanks,
Trevor.

In theory if a source control provider supports the Microsoft SCC interface, it *should* work with LabVIEW. In practice, each provider has custom implementation that sometimes causes problems when trying to configure the provider from LabVIEW. One sticking point for many providers is the expectation or assumption that an IDE will use some concept of a "project" and therefore pass data associated with that project to the provider. LabVIEW does not enforce that concept but does pass valid information.
Synergy was tested back when it was a Telelogic product. It was difficult to configure and required exact steps to get it to work correctly. The linked knowledge base were steps taken that worked for a few customer setups. It's possible that on other Synergy setups the exact steps may not work. Also, you might check to make sure you try to configure existing Synergy projects and not try to create new ones from LabVIEW.
The error you mentioned seems to imply that some data is not supported by Synergy. I am not sure if Synergy would be able to track down the issue, but I would recommend contacting them to see if they can pinpoint what data LabVIEW is sending is not valid.
George M
National Instruments

Is it possible to view VIs remotely on windows 7 if VI was built with LabView 8.2?

So I know i'm probably dealing with software compatibility issues here, BUT, I wanted to make sure every option was exhausted before considering the idea of upgrades.
Im using LabView full development system 8.2 on windows XP 32bit os. Currently, I run into no issues when controling or building VIs on my computer. Problems do occur when trying to control VIs on a remote computer with windows 7. That computer has run-time 8.2.1 installed on it. For the most part it works best to just view the VIs, and not interact or control too much. More specifically, the VI will freeze once interacting with a control that is intended to pop up a two button dialogue box. I'm sure there are a lot more issues with using run-time 8.2.1 on a windows 7 computer; that one in particular is just the only one i've experienced.
In all efforts to avoid what could eventually be an unavoidable situation where an upgrade is necessary, is there a way to remotely control (on windows 7) a VI front panel that was built with labview 8.2?

Thank you for the response. Just to preface, I am fairly new to LabView so pardon my potentially "stupid" questions. Here's my process in a nut shell: VI programs are created on our server computer and then published for web with the "web publishing tool...". The html page created is then put on a main page with all other created VIs and are then viewed on other computers that are part of the network via ip address.
I was under the impression the LabView run-time engine enabled remote computers to view and control these VIs. Could be wrong? After downloading and installing run-time 8.2.1 (since vi's were created with labview 8.2), those computers are able to enter the ip address and navigate to the main page to control the web published vi's. The issue is with the computer that has windows 7. I know run-time 8.2.1 isn't necessarily compatible with windows 7, but it does seem to run the vi on a pretty minimal level. I run into problems on that computer when hitting particular controls that are wired to be more complex than just a simple boolean.
Just to provide a visual, I attached an image of one of the scenarios where it will freeze up on the windows 7 computer. This is how the VI should normally function; however, before the dialogue box even pops up after clicking a valve control, it freezes.
I didn't even consider VNC or Remote Desktop up to this point. Thank you for that idea. I'll definitely look into that as an alternative.

Is it possible to get 2-ch signals from TDS2012 oscilloscope at the same time with LabVIEW "7.0"?

Hi, everyone.
I've been trying to get the signals from 2-ch of Tektronix TDS2012 oscilloscope at the same time using IVI connection with LabVIEW "7.0"
I've already searched this developer zone for the answer.
I've tried the famous example: "IviScope - Acq Dual Wfm Edge Triggered.vi"
and it gave me the error message like:
Error -1074110451 occurred at IviScope Initialize With Options.vi
Possible reason(s):
Driver Status: (Hex 0xBFFA600D) Primary Error: (Hex 0xBFFA600D) The Config Server module is not present on the system.
I think I've installed all~ the required softwares for IVI. For example, ICP 2.2, IVI engine 2.0.46, and tktds1k2k ivi (instrument driver for tds2012, in fact this one is for LabVIEW "7.1"... :-P)
TDS2012 and my computer is connected through HPIB(GPIB) and it is shown on the MAX (a GPIB instrument as well as an IVI hardware asset)
I've tried GPIB connection but it gives me asynchronous signals...
Is it possible to get 2 signals at the same time with LabVIEW 7.0(not 7.1 or higher) by any means?
What in the earth is the "Config Server" in this case?
I don't need to sticking to IVI and any method to achieve my goal will be welcome.
Could anyone give me the hint for this problem, plz?

I think your problem is that the instrument specific driver is version 7.1 and you are using the class driver with 7.0. You can create your own 7.0 driver by downloading the LabWindows driver and using the Import CVI Instrument Driver under the Tools>Instrumentation menu.
Since you don't seem to have a good reason to use IVI, why don't you try the native LabVIEW driver at http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=E3B19B3E9139659CE034080020E748.... I believe you have all of the functions to setup each channel and then when you trigger the scope, both channels will be captured. You would then transfer each waveform separately. The data is always read sequentially but that's not important as long as both channels are triggered at the same time.

WIth LabVIEW how do I control an instrument with a RS232 output, using a RS232 to USB converter cable.

WIth LabVIEW how do I control an instrument with a RS232 output, using a RS232 to USB converter cable since I dont have rs232 ports. I have two instruments that I want to control in this manner. One is an Imada ZPS force gage with RS232 output. The other is a Panasonic HL-G103-S-J laser micrometer sensor which is RS422. I've done considerable LabVIEW programming using GPIB but I have no experience with devices like these. Any tutorial or examples would be greatly appreciated.
Thanks.
Solved!
Go to Solution.

I understand that you want to control a device which having RS 232 port as output. If so, you can use an USB-RS232 cable from PC to device and you can control or monitor the device.
See this link http://zone.ni.com/devzone/cda/epd/p/id/2669
Also, first check the device in hyperterminal and then continue to program in labVIEW. You can find the serial VI's in Instrument I/O.

Tcp/ip communication with LabVIEW

Does anyone have experience building an application with LabVIEW that
communicates over a socket? I new to LV, but it appears that the
application I have in mind is possible. Specifically, the LV
application would open a socket (port and IP known ahead of time) and
send a character to that socket. Depending on the character sent, the
application on the other end (a UNIX process) would send back a one
integer value to indicate the number of packets to expect. The LV
application would next need to parse each packet for such things as the
packet length, data length and so forth and then distribute those data
to appropriate sub-processes. The header value types are integer,
double, byte and character. The data values are all 4-
byte integers.
The sending code (on the UNIX side) was written in C. The aggregate
throughput is relatively low; no more than 2,000 bytes per second,
including packet headers.
If I can get this to work, the results would represent a significant
cost savings over competing alternatives. As a federal employee, I'm
always looking for the most cost effective solutions.
Thanks.
-Robert
Basically, I'm just looking for confirmation that this sort of thing is
possible with LV. And, I'd like to get a better idea of how hard it
would be to do.
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.

Hi everyone,i am currently trying to communicate with two computers at the moment using TCP/IP.I have done a simple server and client VI but the server doesnt seem to be writing the string im trying to send and it also gives an error message
Error 1 occurred at TCP Write in Server.vi
Possible reason(s):
LabVIEW: An input parameter is invalid. For example if the input is a path, the path might contain a character not allowed by the OS such as ? or @.
Please find attached the simple server and client VIs i have done.can you help me?
Thanks
Osowoaji
Attachments:
Server.vi ‏13 KB
Client.vi ‏13 KB

Error, in Getting started with Labview. Chapter 3, part 4.

Hi.
Still struggling on, trying to find the time to work through the "Getting Started with LabVIEW" document.
Only 19 days left to go, and I'm still only in chapter 3!...
Right. In the "Saving Data When Prompted by a User" exersise, part 4...
4.   Right-click the Signals input of the Write To Measurement File
      Express VI and select Insert Input/Output from the shortcut menu to
      insert the Comment input.
Problem is, that option is greyed out, so not available!...
I did what the instructions said, I right clicked on the "Signals" input, and it doesnt do what it says on the tin!
Any pointers?   Please don't mention search the help, I've crashed the entire LV environment 3 times now, trying to search for something in there. It's OK if it finds someting, but it seems to bomb at times, when there is some ambiguity when searching.
Also, I won't be able to do anyting with any replies for a day or two, as I have to go up country to a customer, and mess about with hot oil, high volts, and lots of RF. It never ends.   (I've still got the day job to do, while trying to fight my way through this "evaluation". 30 days of "Use" would be better, than 30 calendar days for some of us.)
Regards.
Dave Baxter.
Technical Manager: AR-UK Ltd.
AR United Kingdom
OK... Who let the smoke out?

Hi Dennis, and everyone else..
That is not how it looks when first dropped on the BD. On my machine, it is partialy expanded by default, after you clear the Configure dialog that pops up ocupying most of the screen.
Again, if it makes a difference to the way the Right Click shortcut menu works, it should be documented in the Getting Started document, especialy as it seems to be a critical point.
OK, explain this...
I've just rubbed out the save to file VI, cleaned up the broken wires etc, and then planted a new one on the BD. Once I cleared the Configure dialog that covers up most of the screen before you see it the first time, the VI was partialy expanded. I forget the exact list, but "Signals" was not at the top.
I did *EXACTLY* the same again, deleted it, cleaned up, and then planted a fresh new one. That DID appear that time with nothing but the "Signals" item showing, and two down caretts below that, indicating more items.
So......
Why the different behaviour each time, on the same BD, in the same session. Some underlying working data not being correctly initialised when invoked? Of course, that never happens, right? ('C' programmes eh?)
Trying some more, it seems the behaviour loosley depends on just how close to the edge of the While loop grey border you place it.   Odd.   I have a 1280x800 screen to play with, and a 1280x1024 second screen I use for the Getting Started document. That is the absolute maximum I can have, due to hardware limits.
I also find, that if you fully expand the "Write to Measurement File" VI block, then fully collapse it, then expand it again, all the items in that list have changed places! Why?
I had noticed earlier that there is no uniformity in the layout of even the items common to many if not all VI blocks (error in, and error out to name but two) Sometimes one is above the other, sometimes the other way round, sometimes they are not even ajacent to each other. Has that been done as a source of minor ammusement or something?
Talking to another colegue here, who just wandered in to see how I was getting on with this. Seems he also has tried the introductory entry into LV (V8.something) in the past. But he too, found too many things that behaved differently from one time to another, so abandoned it as a lost cause, then decided to learn how to use Visual Basic with NI-GPIB IO instead.   Not without issues either he said, but at least it all behaves exactly the same, each and every time.
End of the day now...
Regards.
Dave B.
OK... Who let the smoke out?

How can I record a video with LAbview?

Hi,
I have a question: How can I record a video with labview?
I have a camera (AXIS 221) connected via rj45 on PC. I see the video of the camera in a browser.
And I would to acquire the video in labview.
Could someone help me?
Thanks
Raf

Unfortunately I haven't any experience with this camera. Iguess, you should install API, then crete new VI, place ActiveX container (palette Container->ActiveX) on the Front Panel, then right mouse click, then choose Insert ActiveX object..., then found you camera object and select it and press OK. Then you probably can see image from the on the front panel. Also probably you will be able to get image data in array (how easy is it - depends from the camera API).
If you able to see image from camera in the Internet Explorer, then another method - you can put Microsoft Web Browser as ActiveX object, then you should also see the image. Disadvantage of this method - you will be not able to get image data.
Andrey.

Problems obtaining .rxe with labview 8.5 professional

Hello everyone! I am starting with labview for nxt, and I have some problems during the compilation. I have installed all what it is said in instructions for labview 8.5 professional, then I have done the "mass compiled" but I have obtanied lots of bad VI. I have tried to do it again and again, and results are always the same.
Not knowing how to solve them, I decide to continue. I can do everything till the moment I want to compile. It tries to compile, but only generates a new .rxe file, with no name and no data. When I try to run it, the nxt shows a message telling that it is a bad file.
The trouble is that I do not know whether both problems are related and how to solve them. Any suggestions will be thanked!

The solution is to copy all files from nxttoolkit101patch.zip that corresponds to the labview 7.1, to the folder of your labview version. Then, mass compile your new toolkit and does all.

I have got a 1500 Kinetic Systems CAMAC crate and 3922 controller. I want to use it with LabView inst

alled in PCI-bus IBM PC, which does not have GPIB interface. Which way would be easier for developing my own instrument driver: a new GPIB controller + interface or 2915 Kinetic Sys. PCI-bus in-slot interface? Can the latter interface be used with LabView?
Many thanks.
Victor. I have got a 1500 Kinetic Systems CAMAC crate and 3932 controller. I want to use it with LabView installed in PCI-bus IBM PC, which does not have GPIB interface. Which way would be easier for developing my own instrument driver: a new GPIB controller + interface or 2915 Kinetic Sys. PCI-bus in-slot interface? Thanks

alled in PCI-bus IBM PC, which does not have GPIB interface. Which way would be easier for developing my own instrument driver: a new GPIB controller + interface or 2915 Kinetic Sys. PCI-bus in-slot interface? Can the latter interface be used with LabView?Victor,
I couldn't find an Instrument Driver for the 3932 crate controler. There is a driver for the 3988: http://zone.ni.com/idnet97.nsf/9b2b33e1993d877786256436006ec498/045f8392cc4d1b01862568ab005fbb49?OpenDocument
If you look at the driver it isn't too complex. Well ... actaully there are certain differences when using the 3988 GPIB controller that the driver takes care of that relate to correctly passing commands (FAN).
If the 3922 controller is similar then maybe you can use the 3988 driver and modify it to meet your needs. I'm not familar with the 2915 Kinetic system so I'm not sure what would be easier.
If you have a GPIB board, then you could try using the 3988 driver with your 3922 controller and see if you can modify the driver to get things to work.
I
've only used the 3988 and that was quite three years ago but it might be worth a try.
Best of luck,
Kamran - NI

AO then AI with LabVIEW

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