TobyD

QUOTE (jcarmody @ Oct 31 2008, 11:36 AM)

...JKI State Machine...JKI State Machine...JKI State Machine...JKI State Machine... JKI State Machine

Thanks,

Jim

Does anyone know where I can download the JKI State Machine?

QUOTE (Ton @ Oct 31 2008, 10:25 AM)

It's the vote that matters, the 'null' vote.

Ton

Ahhh, the null vote - I forgot about that option. Thanks Ton! And thanks to everyone else for a laugh

I'm not sure if I'm missing something or if this is a bug. Look at any poll and the numbers in brackets after each possible "candidate" do not add up to the number of total votes reported.

QUOTE (Megatron @ Oct 30 2008, 02:57 AM)

Hi,

I have to interface Lab View with a CIF 50 Hilscher Profibus.

I read through some of the documents provided by Hilscher, it talked about Sys Con, OPC servers etc etc.

Through this profibus i have to control a valve box through RS-485 communication.

The first task is basic read/write.Through lab View i have to read the number of bits through CIF 50 bus in turn to the Valve box.

Can anyone tell me where should i begin?

I've said it before and I'll say it again. Get yourself a http://wiki.lavag.org/LabVIEW_Books' rel='nofollow' target="_blank">good book (I highly recommend LabVIEW for Everyone) and take the NI training classes if your budget allows. You will come up to speed much faster and write better code because of it.

-Toby

QUOTE (Daklu @ Oct 29 2008, 12:11 PM)

10 for 1? That I might be able to sell, but I didn't see the offer on the VIPM website.

The idea is that you only need one license to build packages. Then anyone who want to use the packages downloads the free version and installs them. You can tell your manager you're getting 10+ licenses because he/she doesn't know that everyone else is getting the free version :ninja:

QUOTE (Ton @ Oct 28 2008, 11:34 PM)

...you could tell your management that you have a bargain 10 licenses for the price of one.

That's a great idea! I might try that one :thumbup:

QUOTE (professor_rumsdiegeige @ Oct 29 2008, 01:57 AM)

I checked the path again. The VI is on my desktop. You can find the VI I try to call and a screenshot how I configure the Vision Assistant in the attachment. Thank you!

I am using Vision Assistant 8.6 and everything works fine. Are you able to call any other VIs? If I remember correctly, you have the option of installing Vision Assistant support for LabVIEW when you install Vision. If that didn't get installed it could be your issue. The only other thing I can think of that would cause this error is if you have installed an incompatible version of Vision and LabVIEW, but 8.2 should work with 8.2.

-Toby

QUOTE (professor_rumsdiegeige @ Oct 28 2008, 04:25 AM)

Hello,

I encounter the following problem when trying to use a custom Labview 8.2 VI from within Vision Assistant 8.2: after selecting this VI, Vision Assistant complains "there is no VI at the path you specified". Has anybody got a solution for that?

Thanks!

Sabine Lorentz

My only suggestions are to triple check the path and make sure the VI is not saved in a hidden directory. Can you post a screenshot to show us how you are calling the VI.

-Toby

QUOTE (jdunham @ Oct 28 2008, 11:14 AM)

VISA Close works just fine for me...

Me Too.

QUOTE (jdunham @ Oct 27 2008, 10:26 AM)

On my Vista computer, visaconf.ini is located in C:\ProgramData\National Instruments\NIvisa.

I don't know the best way to replicate settings between computers, but it seems likely that your app will need elevated privilege if you want to write a program to modify the file.

Thanks! Apparently I had "show hidden folders" turned off so visaconf.ini didn't show up in any of my searches. It's definitely a Monday.

I know there are a few Portal fans among us. I found a great free add-on this weekend. You can download it here (requires the full version of Portal). It is 19 new levels that are quite a bit trickier than the original, but not so complicated that they ruin the fun. The add-on was not done by Valve, but it is very professionally done. The storyline takes place before the original and leads up to the creation of GLaDOS.

-Toby

QUOTE (ooth @ May 15 2007, 01:43 PM)

Is there still a way to create an alias without using MAX?

I am resurrecting this thread because I have the same question. I am currently working with LV 8.6 and VISA 4.4 and I would rather not manually configure visa aliases on each machine. Is there an ini file that stores the VISA aliases (I don't have a visaconf.ini file on my machine)? I know I can export my setting in MAX and then import them on each machine, but that is still a time consuming process.

I'm also open to other suggestions if there is a better way to manage these settings.

-Toby

EDIT: I found http://digital.ni.com/public.nsf/allkb/F02B2BF8943A31D786257393005D16F1' target="_blank">this article on ni.com, but I'm running Vista and the application data folder no longer exists - still looking

QUOTE (dannyt @ Oct 23 2008, 01:07 AM)

2) What are the general guideline for dealing with this problem at the outset of a project. Should developers code all projects on the worst specification monitor they will have to run their code on, to ensure it work in that situation ? I have now two good sized and spec'ed monitors on my desk I find it increases my productivitly when writing the code, I can have multiple block diagrams open at the same time and easily see them and I would be loathed to give up such an environment.

We write quite a bit of code that runs on 800x600 touch screens, but I develop on a 24" 1920x1200 monitor. I generally drop a decoration on my front panel that is sized to the smallest resolution my code will run on (if I will be running at 800x600 I drop an 800x600 pixel rectangle on the front panel). I then know that anything I do in the GUI has to fit inside that decoration. Sometimes I may have to change the entire layout from what I had envisioned (adding tab controls for example) to fit everything into the space available without it looking too cramped, but it seems to always turn out pretty good when I put it on the smaller monitor.

-Toby

QUOTE (Antoine Châlons @ Oct 21 2008, 10:23 PM)

lol

i was expecting such a question

first, these are not referred to as "watches" but "time pieces" and they don't really have price -if they had it would easily be a 7 digit price- but i think these are not to be worn as watch.. it takes more than a years to build one and for the most complicated there are limited series maybe less than 10 in the world so their place is a museum, not the wrist of someone who can spend millions of $ on a time piece.

It says http://www.coolhunting.com/archives/2008/04/de_grisogono_me.php' rel='nofollow' target="_blank">here that there were 177 produced. I did find one site that claimed to have one for sale, it said "Call for price." I wonder if they would do a credit check on me before telling me how much it costs?

QUOTE (vronto31 @ Oct 23 2008, 06:12 AM)

Hi

How can I retrieve computer id of my system in Labview, programatically.

Thanks

Vinamra

If it's the computer name you want and you are using windows you can do this...

http://lavag.org/old_files/monthly_10_2008/post-8758-1224776206.png' target="_blank">

QUOTE (Dan Bookwalter @ Oct 23 2008, 06:15 AM)

I have a web cam that FTP's an image every 5 seconds , I need to process these images to see if anyone is in the lab. I tried inverting one of the images and adding them together , but there are too many changes. the web cam is mounted to an I-beam which does move very slightly so there are always little changes , i have a very crude method that cuts down on the number of images i save but i still get many images with no real changes. I don't not have any of the NI Vision or IMAQ toolkits and wont be getting them. Anyone have any ideas on how I can process these images more effectively ?

I haven't tried this, but if I were to approach the issue without IMAQ or Vision I would start by comparing the image data of the two images. In the image data cluster is "image" array. Compare these arrays to a threshold value. If they differ by more than 80% (you'll have to play with the value) you know you have pretty significant changes in the picture.

-Toby

QUOTE (daveP @ Oct 21 2008, 09:06 AM)

I have x y data in array form. The original data was not generated with a uniform x interval, but the file I am converting to requires the x data to be evenly spaced from the start value to the end one. Does labview allow you to predict the y values at given x values i.e can a generate a new array with new x and y values where the x values are evenly spaced.

Hi Dave,

normandinf beat me to it while I was making an example, but you should be able to utilize the interpolate VIs to get what you need. I have attached one example of what can be done with linear interpolation. Read your data into an array of clusters where each cluster contains your known x and coresponding y values. Then pass in the x values you want to know and the y values will be spit out. Play around with this until you get the kind of interpolation you need.

-Toby

http://lavag.org/old_files/post-8758-1224606781.vi'>Download File:post-8758-1224606781.vi

QUOTE (Michael_Aivaliotis @ Oct 21 2008, 01:33 AM)

ROFL. This thread is awesome! Keep it coming.

HaHa! That's what I was thinking, Buddy. :thumbup:

QUOTE (Altobo @ Oct 21 2008, 06:04 AM)

I have been given the task of creating a program in Labview. It's the first time I have to use it seriously, so I'm kind of lost.

I need to activate 6 several small engines in a specific order. Each engine may only be active for a specific amout of time, and when one is turned of, another should start immediately.

If I understand you correctly, you are more interested in the timing and sequence of starting and stopping these "engines" than in the actual communication with the engines. Is that correct?

This sounds like a perfect case to use a simple state machine architecture. Take some time to search here and on ni.com for state machines and see if it makes sense to you. Let us know if you have questions on the implementation.

Out of curiosity, what is this project for? What will the engines be doing?

-Toby

QUOTE (km4hr @ Oct 21 2008, 07:57 AM)

Can LabVIEW be run without the menu and toolbar at the top of the page?

Do you have to display the LabVIEW splash page on startup?

Is there a way to start an application without the "Run" arrow in the toolbar?

I want to be able to create an icon on the desktop that runs my application without becoming a LabVIEW advertisement. I don't necessarily want to hide the fact that it's LabVIEW. I'd just prefer it to be a little less conspicuous.

km4hr,

As for running without the run arrow, take a look in VI Properties in the Execution category and set Run When Opened. Don't set this until you have you VI working pretty much the way you want it to. If you get stuck in a situation where you cannot get into the VI to edit it, simply drop your VI onto the block diagram of a new VI and you will be able to get into it for editing.

Since you admit to being a beginner, I thought I'd volunteer my advice - take it for what it's worth. I would highly recommend getting yourself a good http://wiki.lavag.org/LabVIEW_Books' rel='nofollow' target="_blank">book on LabVIEW and spending a couple of days with it. I was a beginner not that long ago. I chose LabVIEW for Everyone and I learned more in the first two hours with that book than I had in the previous two weeks. It's a bit pricey, but definitely worth every penny in the time and trouble it will save you going forward.

In the meantime, please don't hesitate to keep the questions coming. That's why we all hang out here

-Toby

QUOTE (Neville D @ Oct 20 2008, 10:11 AM)

I am trying to create a desktop PC Utility on a USB memory stick in order to test requirements for turning a desktop into an RT target.

But the darn MAX utility simply refuses to recognize a perfectly good USB memory stick that has been correctly formatted as FAT32.

I tried two different USB sticks, and different USB ports.

Any ideas?

Neville.

I am not familiar with the desktop PC utility tool, so my idea might suck, but you might try formatting your USB drive using the http://www.pcworld.com/downloads/file/fid,64963-order,4-page,1-c,peripherals/description.html' rel='nofollow' target="_blank">HP USB Disk Storage Format Tool. I have found other applications where a drive formatted in windows was not readable, but one formatted with the HP utility was.

QUOTE (PaulG. @ Oct 18 2008, 11:26 AM)

I sincerely apologize...

Regarding a thumb drive...

I figured you must just be having a bad day because your reply seemed a bit out of character. :thumbup:

As for the thumb drive - I strongly recommend that you not rely on this as the only form of backup you employ. Others have mentioned SCC, which is ideal, but even if you think that is overkill don't rely on just a thumb drive. I have seen those things corrupt data so many times I would never rely on them as my backup plan.

QUOTE (PaulG. @ Oct 16 2008, 06:23 PM)

ForCryinOutLoud! WTH are we doing here, guys? It's LabVIEW, not "labview". And if KM4HR wants to "protect" precious intellectual property ... ... just tell him/her to save their code onto their own personal thumbdrive.

I couldn't help but point out that it's km4hr not "KM4HR". I hope today is going better for you PaulG.

QUOTE (marp84 @ Oct 16 2008, 11:12 AM)

can i build the notch filter with labview 8.0 proffesional development system?

do you know what is the lower and higer cut-off frequency of this filter to eliminate the noise from ecg signal?l?

Yes. Search the LabVIEW examples for filter or filtering and you will find many examples.

As for frequency, the ecg signal frequency is generally between 0.1 and 250 Hz. The P-wave and T-wave are made up mostly of frequency components below 60 Hz, the R-wave also, but it has other frequency components up to 250 Hz. The problem is that you have many sources of noise that can effect such a weak signal. 60 Hz (or 50Hz depending on where you are) power line noise, low frequency noise caused by breathing or movement of the electrodes, and broader spectrum (1-5000Hz) electromyogram (EMG) noise usually caused general movement of the patient. You will need some extremely clean hardware amplification on the ecg signal (amplification factor of around 500) to be able to successfully filter out the noise with software.

The ecg is a common project for students and there are hundreds of sites online with anything you've ever wanted to know about ecg signals (I happen to know because I made one for my junior year project not too many years ago ).

-Toby

QUOTE (km4hr @ Oct 15 2008, 06:04 AM)

Sorry if I missed it but I can't find advanced search.

I don't know about advanced search, but I have had much better luck with http://labviewsearch.com/' rel='nofollow' target="_blank">labviewsearch.com than with the lava search feature.

-Toby