Re: How can I change a dynamic data into an integer representation I32?
It works! Thanks a lot.
How do I communicate with VME Bus via IOWorks? Visa Session?
Board addresses have already been established.
Re: 1/x octave binning
Let me know if you find a VI to do the 1/3 Oct bins. I like to do the same thing! Thanks
Re: How can I change a dynamic data into an integer representation I32?
The I32 conversion icon is in Functions Palette -> Numeric -> Conversion -> To Long Integer. Wire the formula output to the I32 input. The output will be of I32 type.
how can you create a test plan generator using labview
I am looking to create a testplan generator using labview to help RF Engineers translate test requirements into test parameters and wanted to know how i can go about it.
Re: How can I change a dynamic data into an integer representation I32?
You can put the To Long Integer function (Numeric>Conversion palette).
Re: I need my spreadsheet data to be in floating point format.
I use the array to spreadsheet string to take in the data, then I concatenate the date/time string to the end of the spreadsheet string, then I use the write characters to file vi. When I look at the data sheet I saved it under, the data is correct along with the date/time, but the data needs to be in floating point mode instead of whole intergers.
Re: Shared Library and DLL in C
Hello Carl, Thank you for contacting National Instruments. If I understand your situation correctly, you are trying to create the equivalent of a LabVIEW DLL in Mac OS X. In the Mac OS world, a shared library is known as a Code Fragment. In order to create a Code Fragment in Mac OS X, you will need to use a Mac version of LabVIEW that includes the Mac OS Application Builder. You can convert the VI(s) you have created in Windows to Mac and then rebuild your stand-alone application. Once you have rebuilt the application in the Mac environment, ensure that you have the LabVIEW runtime engine installed on any Mac machine that you are trying to call the Code Fragment (Mac DLL) on. Also be aware that to use the Build DLL functionality on the Macintosh, you must have a full installation of Apple MPW (Macintosh Programmer's Workshop), including ToolServer, on the computer. You can download Apple MPW at www.apple.com/developer. It is not sufficient to have an installation of the Code Warrior MPW. It does not include the necessary set of tools. I hope this helps! Let me know if you have further questions. Matthew C Applications Engineer National Instruments
Re: vi for factorials?
Graham; Actually, that was the subject of one of the http://www.ni.com/devzone/lvzone/codechallenge6.htm";>LabVIEW Coding Challenges. http://www.ni.com/devzone/lvzone/codechallenge6_results.htm";>Check out the winner. Regards; Enrique Vargas www.visecurity.com
Re: vi for factorials?
Graham; Actually, that was the subject of one of the http://www.ni.com/devzone/lvzone/codechallenge6.htm";>LabVIEW Coding Challenges. http://www.ni.com/devzone/lvzone/codechallenge6_results.htm";>Check out the winner. Regards; Enrique Vargas www.visecurity.com
Re: I need my spreadsheet data to be in floating point format.
If you are using the 'Write to spreadsheet file.vi' then set the
format connector (on the top of the vi connection in pink). Its a
string with a format
%[–][+][^][0][Width][.Precision][{unit}]Conversion Code
But is your source data to this VI already an integer ?
Perhaps you could post a diagram of your vi ?
Re: VI Link
Hallo Jan, nennen wir das HauptVI VI_A und das ungew=FCnschte VI VI_B. Ist VI_B ein VI an oberster Stelle in der Hierarchie oder ein SubVI? Mu=DF VI_A erst gestartet werden, dass der Effekt auftritt? Wenn VI_A erst gestartet werden mu=DF wird VI_B dynamisch geladen. Hier hilft folgendes: VI_A laden, das Suchen Fenster =F6ffnen (CTRL-F) und nach Text suchen. Als Text den Namen des VIs angeben. Sofern der Name nicht aus einer Datei gelesen wird oder sonstwie programmatisch erstellt wird sollte das VI gefunden werden, das VI_B l=E4dt. Alternativ hilft eine Suche nach der Funktion "Open VI Reference". Dies k=F6nnte jedoch viele Treffer ergeben, die dann alle zu kontrollieren sind. Wenn mit dem Laden von VI_A, ohne dass es ausgef=FChrt wird, VI_B ge=F6ffnet wird, mu=DF VI_B ein SubVI sein. Dann sind auch alle Aufrufer im Baum sichtbar und damit ist klar wer VI_B l=E4dt. Waldemar
Re: clock where i need a pause in it
William, I am starting to better understand how you would like your application to execute. It sounds like if there is a fluctuation in the pressure of the HPC you would like the VI to pause until you have a chance to fix the problem and then it should continue when you press the pause button on the front panel. If this is indeed how you would like the VI to behave, you may want to take a look at the Wait For Front Panel Activity function. This should allow you to pause the execution of the VI until there is input from the pause button on the front panel. If you want the VI to restart you might consider using an event structure that would execute code (the HPC process) on the value change of a control i.e. the reset button. I hope these resources help. Let me know if these functions are relevant to your application. Shea C. Applications Engineering
Re: Hitting Back Space in Remote Panel while entering character in string control
Here is another link to Microsoft's page about the problem. You may want to post the issue on their site to see if someone has found a way to fix the problem since this happems for all applets running in IE. http://support.microsoft.com/default.aspx?scid=kb;en-us;235239&Product=ie Hope this helps... Shea C Applications Engineering
Re: Beginner at LabView, Load Cell Force Measurement?
I note that the SCC SG04 has a 2.5v excitation voltage and the force unit indicated is recommended at 10v excitation. There is a 10v excitation unit which is the SCC SG24. Anyway with a lower excitation voltage you get less mV output for a force input which could mean that you loose ability to measure the desired force as it would be 4 times smaller than recommended. The smallest force unit is 50lb force full scale. This is quite a lot for pressing a syringe isn't it? An alternative way of looking at this is that you don't get enough resolution in the measurement if you sensor range is too big. I could have the wrong end of the stick for your application? Best advice is to perform a simulation with some wieghts.
Re: AT-MIO-64E and digital output
Hi Thijs, It's me again. I was hesitating to reply to this Q because I am busy and answers of this type usually get a one start rating but, TO h#$l with answer ratings! You can not do what you are asking with that board with any degree of determinism. Now if you wanted to do 10Hz and there was nothing else happening on the machine, thne the answer would be maybe. If you wanted to do 100Hz and you could tolerate jitter on the order of 100 to 1000 ms, then the asnwer is maybe. But, to do 1000 Hz deterministicly over 150 seconds, NO WAY! This will only end up being an exercise in frustration. You need hardware timing to get determinism on a non-RT OS. So, Get another board that supports bufferd DO, or Mover to LV-RT or Live with indeterminism. Bracing for a one star rating, Ben
Re: Shared Library and DLL in C
Hello Carl, It looks like you are having trouble writing DLL files using LabVIEW on Mac OS X. I believe they now call them frameworks under OS X. First, let=92s make sure you have the necessary software. I=92m assuming you already have the http://sine.ni.com/apps/we/nioc.vp?cid=3D10732&lang=3DUS >LabVIEW Application Builder for Mac OS. Under Mac OS 9, you needed to download MPW (Macintosh Programmer=92s Workshop) in order to write dll=92s in LabVIEW. The OS X version of this is called the Project Builder. http://zone.ni.com/devzone/conceptd.nsf/webmain/5DF85B448EB081D88625= 68FF006A0B20?opendocument>This tutorial is made for Windows, but it should be almost identical for a Mac. I just tested making a dll file on Mac OS X, and it seemed very similar to the process on Windows. Let me know how far these suggestions get you, and if you need additional help, I=92ll be happy to look further into it. Have a nice day! Robert M Applications Engineer National Instruments
write to network analyzer HP8753D
I need to write some known data to the memory of HP8753D so i can perform a data/memory calculation I downloaded the drivers for the analyzer but it only has a driver to write strings. Does anyone has a driver that could help me to write and plot in screen. Thanks
How can I change a dynamic data into an integer representation I32?
The result of formula box is a dynamic data. I need to change the representation into an integer representation I32. How can I do this?
How can I change a dynamic data into an integer representation I32?
The result of formula box is a dynamic data. I need to change the representation into an integer representation I32. How can I do this?
Re: using FP-1601 with two PC's
Jose, I have a 3 PC network with 12 fieldPoint banks. I have problem after problem with the watchdog settings and flash memory getting corrupted although my *.iak file never changes. Do you have any of these types of problems? how do you manage you *.iak files? Does each PC have its own?
Re: Labview GPIB connection.
Hello Ninskaya, Thank you for contacting National Instruments. I am not seeing your attached VI. If you still need help with this issue, let me know. Try reposting the VI you are using, and if possible, provide a little information about the specific instrument you are trying to communicate with. Matthew C Applications Engineer National Instruments
Re: About EWMA in SPC
In statistics there are always different methods of calculating the answer. ' There are lies, damm lies and then there are statistics' Anyway you don't say what method. You might find the following of interest Evaluations of some exponentially weighted moving average methods Sonesson, Christian. (2001)
I need timed data logging with continuous graphing
I am graphing continuous temperature measurements, but I only want to log onto a spreadsheet measurements every hour. How do I do that?
error 1003 internal.llb
I worked with a LabView Project for a while using LabView 6.1. Than I installed at the same PC LabView 7.0 and recompiled everything. I could build applications without any problem over the last 5 months. Two weeks ago I copied my VIs to another PC with LabView 7.0 installed. After having made changes within some days I tried to build an application for distribution I got the 1003 error. I ran masscompile and recompiled the VIs, nothing changed.I reinstalled the LV runtime and did many other things. What can I do to solve that problem? The VI runs in the development environment without any problem.
Re: AT-MIO-64E and digital output
Hello Thijs, Thank you for your inquiry regarding digital output timing. It sounds like want to use software to write the digital points out at a rate of 1000Hz. When you mention that the wait command is not =93secure=94 I assume that you mean it creates an output rate that is not accurate. The wait function can be interrupted by software and therefore the rate at which you are writing data out may not be accurate. Even though there is no way to guarantee a rate of 1000Hz using software there is a better function that you could use to make your output rate more accurate. The Wait Until Next ms Multiple function waits until the value of the millisecond timer becomes a multiple of the user specified millisecond multiple. This can be found in the Functions>>All Functions>>Time and Dialog palette. Use this function in a For Loop to write points until the array of 15 points is empty. I hope these resources help. Let me know if I can further assist you. Shea C. Applications Engineering
Re: AT-MIO-64E and digital output
I notice in the HELP for Labview 6.1 that there is an example "buffered handshake output.vi" I suspect that this might do the job with some jigging of the configuration 'DESCRIPTION: This example VI can only be used with boards that support handshaking such as the 8255 based DIO devices, Lab and 1200 devices, AT-MIO-16DE-10, DIO-32HS/653x devices, and AT-DIO-32F. This VI transfers data from your digital DAQ board to an external device using a two-way handshaking protocol. '
Re: Convert strain to force
See the other answer and Labview 6.1 Select HELP | Find Examples | Search Use the keyword Strain Select the example "Continous Strain Measurement" Now Calibrate as required (suggestions below) You can simulate the force measurement device if you know the construction of the device used to measure the force. By constructing an equivalent resistor network and adding a "Simulation" resitor. Alternatively you can purchase bridge calibration hardware. By weight. In this instance I suspect some small Lab weights will be required or use Brass Tacks and weigh them on a scale / balance then divide the number of tacks by the weight obtained for the average weight of each tack. Coins would be a suitable alternative !! And you can recycle them afterwards well buy a beer to celebrate :)
Re: arabic
Hello, In order to display Arabic text in LabVIEW, follow the directions on the following post: http://digital.ni.com/public.nsf/websearch/A85102C718443B3D86256B13007E559F?OpenDocument";> Click Here I hope this helps. Please let me know if I can further assist you. Best Regards, Joe Des Rosier National Instruments
Re: Communicating Between Built LV App.s
Which he will have available if he installs a loop-back card driver (comes standard from Microsoft)...
Re: What property settings to I need to set in order for VISA...
At the beginning of the top-level vi, the port is configured with the correct settings...however, I found an error in my programming...inside one of the subVIs, I was closing the VISA session, and very quickly "re-opening" the port with a Read command without re-initializing...and this time the port was configured by LabView using the default settings, hence, the garbage characters... Thanks for your time...
Re: "Fatal internal error:"memory.cpp",line 593"
Hello wewe, At first glance it looks like your memory error may have something to do with your for loop that it initializing elt[i] =3D 0. When you define that struct, you set elt as a single element array. In the for loop, you are trying to access 500 elements of that array. You are indexing out of that array and probably setting all the memory after it to 0. Hope this helps. If not, let me know, and I=92d be happy to look further into it. Have a nice day! Robert M Applications Engineer National Instruments
Re: How to programmably control the 3D plot, switching from greyscale to colorgram?
hi, thank you so much! It works for me. But one more step is, I also need to change the colormap or the colorvalues property as well (do they need to specify together?) since like for greyscale, I want to have my 0 value mapping to white and 3.5 value mapping to black. I think maybe I can work this out with the CWPlot3D.ColorMapColors and ColorMapValues ... but haven't figure out how to do it. How to do this?
Re: Using Labjack U12 to control stepping motor with Labview
Do I need to configure the Labjack with the Measurment and Automation Tool in order to use it and if I do, how would that be done?
Re: Communicating Between Built LV App.s
It will work fine but still requires TCP for VI Server operation...
Re: Communicating Between Built LV App.s
To get access to TCP/IP, UDP etc. on a PC without a network card you can install a virtual network card / loopback card. As far as I remember you can find it as an option if you try to add a network card in the add device panel... We've used this on some occasions to be able to use our tcp/ip based client/server solutions on PCs without a network card. To comment on the que thread: The OpenG Toolkit includes a remote que solution. I highly recommend it, you can find it on www.openg.org
Re: Why does priority of NON RUNNING vi affects execution time of subVI?
No Problem! If it wasn't for the "Big Boys", I would have given up playing in this sandbox along time ago! I'll try to rationalize this behaviour in the background. I'll post if I think of something. Ben
Re: Application restarting
At 4:25 PM + 3/2/04, Craig Graham wrote: >From: <[EMAIL PROTECTED]> > > I have a Labview application which is meant for test and measurement >> application to test some the units in production, > > Randomly this application is restarting the system ( running on Win98SE OS >Ditch that for a start. Go for an NT derivative- NT4, Win2K or XP. Or a >modern Mac. Or Linux. In fact, anything other than the Win95/98*/ME stream. Craig is right! That is normal expected behavior for a DOS derivative O/S! -Scott
Re: Why does priority of NON RUNNING vi affects execution time of subVI?
If I set the "wasteTime.VI" as sub-routine, the undesirable effect goes away! Hmmm - that works for me too. In the real case, the "Object" has a subVI which has a subVI. I have to set those to subroutine as well, because a subroutine cannot call a non-subroutine priority VI. But I think that's OK, in my case. If I do that, I get times of 8-9 mSec on the real object! I didn't try subroutine because I thought it would be the same as the other above-normal priorities - guess I was wrong. Still don't understand why, though. Thanks for your eyes!
Re: Why does priority of NON RUNNING vi affects execution time of subVI?
If I set the "wasteTime.VI" as sub-routine, the undesirable effect goes away! I am guessing that on every call of the waste time VI the non-running VI is checked to see if it wants access to the sub-VI when it is set for higher priority. This does not naswer your WHY Q! I'll watch to see if others can expalin this behaviour. Ben
Problem OPC server datasocket display real voltage
I use an interface box Advantech ADAM 5000/TCP ethernet ( +/- same Compact Fieldpoint ) and a 16 analog inputs channels bloc. I generate a signal from a device, value for this signal is 1.35 Volts by example or all real voltage ( between 1.xxx and 5. Volts ). I use an Advantech OPC server. I read this value with Labview 7.0 and datasocket connection. I want display this value in a waveform graph and a numeric display. When I start application I see the correct value during 1 second, after this time, value is rounded to 1 Volt ( by example ) or truncated. Example : If real value generated is 1.350 Volts, when program start, during one second, this value is displayed correct 1.350 inside the graph and the numeric display. After this time, the graph display a continues line with a value 1 Volt. But inside OPC Server this value is correct all time 1.350 Volt. I use a While Loop for including a "Read DS", a "Variant to Data" transformer and a Graph + a display numeric value. Setting for all is DBL ( Dubble ) No timeout is using and the conversion data type for variant is a constant 0,00. What could be the problem ? Thanks.
Re: What's the best way to store test parameters for future use?
I like INI files, too. If you are looking for an easy way to read and write your parameters to INI, take a look at the http://openg.org/tiki/tiki-index.php?page=OpenG+Lib%3A+Variant+Configuration+File+IO>Variant Configuration File IO Library of the http://openg.org/toolkit/>OpenG Toolkit.
Table cell width: settable programattically in terms of number of characters?
I am currently have a table control with column headers and I would like to have all of the cells of any particular column to have their widths equal to the number of characters in the header string of that column Is this possible to do programmatically? Currently, I see the cell width and height may be settable (despite what property help says) but only in terms of pixels. I suppose I could determine the ratio of pixels to character size so as to cludge a way to come up with cell width in terms of number of characters. Any comments? Thanks, Don
Re: Why does priority of NON RUNNING vi affects execution time of subVI?
If the OBJECT is set to: the time is : RE-ENTRANT - NORMAL - SAME AS CALLER 11.2 mSec NORMAL - SAME AS CALLER 28.9 mSec RE-ENTRANT - NORMAL - OTHER1 33.8 mSec NORMAL - OTHER1 29.2 mSec All of that with the phony caller (that's not running) set to TIME CRITICAL (or anything above NORMAL). Any clues there? Looks like thread makes no difference...
Re: Programmatically changing the "message" for the express VI prompt user for input
Sorry, sorted it. Just noticed a property node reinitializing all the controls and indicators to default values happening after I changed the message. Correct execution order has now stopped this
Re: Why does priority of NON RUNNING vi affects execution time of subVI?
How about if everything is set for the same thread? This would rule out the thread swapping theory. --- That's where we came in. I just double checked, and everything is set to NORMAL - SAME ExeSys AS CALLER (Non re-entrant). The times are about 11.4 mSec. If I set the DUMMY priority anywhere above NORMAL, I get 28 - 29 mSec times.
Convert strain to force
Can anyone tell me how to obtain continuous force values? I will be measuring the compressive force applied to a load cell by an epidural needle. I am having problems converting the voltage from the load cell to force units. Any example codes would be greatly appreciated.
Re: Why does priority of NON RUNNING vi affects execution time of subVI?
Sorry for the distraction but, How about if everything is set for the same thread? This would rule out the thread swapping theory. Please let us know what you find. Curious, Ben
Re: What property settings to I need to set in order for VISA...
Usually, garbage characters are an indication of a baud rate or parity mismatch, or maybe a stop bit or number of data bits setting. Make sure that you have configured your port correctly with VISA Configure Serial Port. I have used VISA serial successfully many times.
Re: Why does priority of NON RUNNING vi affects execution time of subVI?
I agree the re-entrant doesn't get us anywhere but it does tell us something. When re-entrant we have seperate copies of the VI so one instance ends up in each execution system and there is no need to swap threads. I suspect the VI just being loaded is enough for force the thread swaps. If you specify the the thread, how do your numbers look? Ben
Re: Why does priority of NON RUNNING vi affects execution time of subVI?
Is the "object" configured to run in the "Same thread as caller"? Yes. But that doesn't explain (to me) the connection - given that one execution path is not even running, why is the other penalized? MORE INFORMATION: If I make the object RE-ENTRANT, the execution time is back to "normal", regardless of priorities. That's not a real solution for me, as I have shift registers within the object I need to keep, but maybe it's a hint as to what's going on.
Re: Beginner at LabView, Load Cell Force Measurement?
Thanks for the help. Do you see any problems with using the load cell found at this site: http://www.smdsensors.com/detail_pgs/s400.htm I will be using it measure the compressive force of an epidural needle. Thanks again.
Re: What's the best way to store test parameters for future use?
Personally, I would store the parameters in an .ini file. In the File VIs are the Configuration File VIs and they are really good for reading sections and keys. You could have one large .ini file with a section for each instrument or you could create an .ini file for each instrument. Either way, you can save your parameters in the keys and get them back later. I lean towards having fewer .ini files and keeping things a little cleaner in the file structure. Rob
Re: What's the best way to store test parameters for future use?
I'd suggest a seperate tab delimited text file to store these as an array and use "read file" and "spreadsheet string to array" vis to read the data, then just index and search it correctly to recover the data, using property nodes to populate the ring controls and other controls and then "array to spreasheet string" and "write file" to save it if you're programmatically entering tests. Otherwise just edit it in Notepad or whatever.
RE: Good Programming Practice?
George et al., A somewhat dated but functional example of using LV2-style globals to move GUI code out of the main VI is downloadable from my LabVIEW page (http://www.SULLutions.com/LabVIEW.html) as, appropriately, "GUI as SubVI". I don't think there is anything there that others have not already described, but sometimes it helps to see a concrete example. Sorry to be late to the discussion, but I've been on vacation. -- EnWirementally, Paul F. Sullivan SULLutions (781)769-6869 "when a single discipline is not enough" visit http://www.SULLutions.com
Programmatically changing the "message" for the express VI prompt user for input
I was setting up the express vi "prompt user for input" and wandered if it was possible to programmatically change the message like the "Display Message to User". I tried converting to a sub_vi and adding a control, wiring it to the indicator, hiding the control and adding the input to the connector but it doesn't seem to do anything. Any suggestions?
What's the best way to store test parameters for future use?
I'm creating a test stand that will perform various "standard" tests. Each of the tests has it's own setpoints (integer numbers) as well as some string values that are stored in the log file with the data. What is the easiest way to store these setpoints and strings so that I can pull them into the VI in the future, say by selecting a test type from a ring control, etc.? I would also like to make this dynamic so that new test types can be stored from the vi. (i.e. I don't want to have to hard code all the future tests and their parameters).
Re: Why does priority of NON RUNNING vi affects execution time of subVI?
Hi Coastal... This is just a wild guess. Is the "object" configured to run in the "Same thread as caller"? We may be seeing some thread swapping going on here. Done guessing! Please keep us posted. Ben http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=261&HRedirected=True&HUserId=101_3529&RFORMNUMBER=6";>Ben Rayner http://volt.ni.com/niwc/common.jsp?page=products_certification_cld&node=10638";> Certified LabVIEW Developer www.DSAutomation.com
What property settings to I need to set in order for VISA...
What property settings to I need to set in order for VISA Serial Read to read ASCII exactly like the legacy serial read vi? I have successfully built a vi which communicates with a piece of equipment via the serial port using ASCII characters. I am trying to replace the older versions of Serial Read and Write VIs with the VISA Serial Read and Write VIs. The VISA Write works fine, but the when reading data coming from the "box", the VISA Read VI returns string data with foreign looking characters instead of the usual correct ASCII characters as shown by a dumb terminal which is in parallel with the serial data line. Is there a special property node which needs to be configured on the VISA Serial Read vi, or do I need to set something on the VISA Configure Serial port vi? Why aren't the VISA serial vis compatible with the older serial vis? Thanks...
Re: [A] Infinite continuous logging of 16 TV (A+V) channels
"Roman Golubovski" <[EMAIL PROTECTED]> said: >A friend from a TV station would like to set a system for >continuous 24h (or on-demand) recording of 16 TV channels >(composite or AV) with professional quality. Presumably they have heard of tape recorders, they're after a computer-based solution for whatever reason and this is why they asked Roman... Do they want to do something like maintain a recording of the last 7 days of output, and have random access to it to review/archive certain segments? Somebody like Avid (http://www.avid.com) will probably build them a system to do that, but it won't be cheap! An alternative might be to have a suite of PCs or Macs running standard video capture and editing software like Apple Final Cut Express or Adobe Premiere. You'd have to think about how the 'continuous' recording was going to work in that case - maybe rolling over from one file to another every few hours using some kind of software scripting, depending on what those packages are capable of. I don't know of any solutions in between those two, but that doesn't mean they don't exist... As for data rate and disc space, I believe DV is generally considered the entry level for 'professional' quality, and a DV stream is 3.6 megabytes per second. Dr Tom Hawkins High Throughput Screening Analyst, Associated Octel ltd PO Box 17, Ellesmere Port, Cheshire CH65 4HF, UK +44 (0)151 355 3611 [EMAIL PROTECTED] - Email provided by http://www.ntlhome.com/
Re: encryption/decryption programs
Urs; Check my page at www.visecurity.com Also, make sure you contact me at [EMAIL PROTECTED] Regards; Enrique
Re: Open a labview window to display GPIB data.
Do you have an NI GPIB board? If you do, you might want to check the installation of VISA software and even try doing a re-install. I'm not sure what the LeCroy software might be doing but another thing to try is to make sure it's closed and not running when working with MAX.
Re: How to use Labview to control measurement in a vector network analyzer?
Usually, there's a VI in the driver called Getting Started. Look for a palette item called Application Examples and see if it's there. Depending on who wrote the driver and when, it might be in a different location. A Getting Started VI is a high level example of using several of the different functions to control an instrument. I would also suggest turning on Show Context Help and as you browse through the driver's palette, you will see descriptions of what each VI does. If you are familiar with the operations of the instrument itself, you'll probably be able to get some clues as to which VIs you need in your application. Any of the VIs you should be able to open and after setting the correct GPIB address, run it and see what they do.
How to programmably control the 3D plot, switching from greyscale to colorgram?
I am using the 3D parametric surface vi to plot a 3D matrix. It should be displayed either as a colorgram or greyscale plot, controlled by the users. But currently it seems like I just can stop running the program and then manually right click the display area, select the 3D plot properties to change ... How can I realize this by programming? Thanks.
Re: VI Link
Es w=E4re vielleicht hilfreich das Hauptprogramm mal hier zu posten..falls es nicht zu riesig ist.
Re: , instead of . depending on PC
>From the LV 6.1 help files (search "decimal"): Front Panel Options Page Select Tools=BBOptions and select the Front Panel page from the pull-down menu. Use this page to set front panel options. Use localized decimal point=97Uses the decimal separator for the operating system instead of the period. Place a checkmark in this option if you want LabVIEW to operate within the system configuration. Remove the checkmark from this option if you want LabVIEW to use periods in all cases for the decimal point. Note Changes to this option take effect the next time you start LV
Re: , instead of . depending on PC
You may set the options for LabVIEW to always use the decimal point. On the menu select Tools>>Options Select the Front Panel Options. Remove the check mark from the option, =93Use localized decimal point=94. This option will take effect next time you start LabVIEW. Note I am fairly certain that this must be done on each machine you are running the application from. Randall
Re: VI Link
Wenn LabView gestartet wird und anschlie=DFend das gew=FCnschte VI geladen wird, so wird au=DFerdem ein VI ge=F6ffnet, welches bereits seit Ewigkeiten nicht mehr ben=F6tigt wird. Es hat keinen Einflu=DF auf das Programm. Wo die Verkn=FCpfung mit dem Hauptprogramm liegen soll, ist mir derzeit schleierhaft. Nachdem ich das ungew=FCnschte Objekt geschlossen habe ( Alt-F4 ), wird es auch nicht mehr im Baum dargestellt. Wie kann man diesen ungew=FCnschten Effekt beheben? MfG Jan Schoner
, instead of . depending on PC
I have two labtop with Labview 6.1 installed. On one, when I use numeric control, decimal separator is ','. On the other PC, separator is '.' I have not been able to find anything related to this configuration. This make my application fail becasue my instrument need .
Re: encryption/decryption programs
Hello, I got some binary files which I should encrypt/decrypt with LabVIEW. It seemed to me, that you have here quite what I'm searching for. Unfortunately I'm unable to open the link above. Do you have changed the location of your software and where and how can I find it now? Thank you very much for your help in advance. Urs
Understanding the Pattern-Matching algorithm
I have a user that decided to look for a pattern that is a quarter of the size of the image in a basically grey image with some very small contrast differences in the pattern. This was done to verify consistency (I'm not sure it is a valid test). Most of the time the pattern is found with a score that varies with the noice in the image, with sccores around 500 to 800. Now and then the search fails completly with no score. My question is: Will the algorithm used sometimes fail due to that it finds so many matches that a good decision can't be generated or is there some other explanaition on this case.
Re: how do I adapt a Labview VI designed to control a Lenze...
I don't have the NI-CAN drivers installed, so I can't analyse your VI completly, but my first guess would be, that the CAN Interface of your second Lenze drive is not configured correctly. Your first Lenze drive has 1473 as Send-ID for the CAN and 1601 as Receive ID for the CAN. To control the second Lenze drive you have to configure it with different IDs and adjust the numbers in the VI accordingly. A CAN interface/device only listens to the messages send with an CAN-ID that configured as receive ID in the interface/device. I hope this helps a little. Chris
Re: why the output strings are error codes?
I don't have any software installed that can handle rar, would help if you would post a zip
Re: How to read Serial number of the DAQ card that is connected...
Hi, You could try using the GetDAQDeviceInformation.vi in the Data Acquisition>>Calibration and Configuration Palette. Just create a constant on the info type input and select serial number and wire the task ID this will then return the serial number in string format. Hope this helps, Nick
I'm using the simulation interface toolkit V2.0 but it works...
I'm using the simulation interface toolkit V2.0 but it works only the first time after the installation. When I restart again my computer it doesn't work any more. Why?? I'm using labview 7 on a pc with windows XP. We are trying to use the new simulation interface toolkit V2.0. When I install it and soon after I use it everything works good (except that the SIT connection manager is run two times in Matlab but this doesn't affect thefunction of the system). When I shut down my computer and I restart again the SIT doesn't work anymore (I can't even select the simulink file)unless I install the toolkit again. I've tried to patch it with the V2.0.1 but the problem still remains. Does anybody has the same problem? or anybody knows how to solve it?
How to read Serial number of the DAQ card that is connected...
How to read Serial number of the DAQ card that is connected to the system automatically when the VI is running? I am using Different DAQ cards in every system and I want to display the DAQ card serial number in the Screen. Please help me in this regard.
How to create a potentiostat
I have to measure responsitivity of solar cell in "short circuit" i.e. "O Volt" applied. Is it possible to use NI Card for it ?
Re: Using Labjack U12 to control stepping motor with Labview
Hi, the LabJack cannot be set-up for regular LabView DAQ. But: There are vis in the LabJack distribution, located somewhere under C:\Programs\LabJack (look out for ljackuw.llb). There are also several examples. The vis simply mirror the corresponding c library functions, as they are described in the LabJack documentation, so that should be a good starting point. Best regards Matthias
Re: Open a labview window to display GPIB data.
Hi Dennis, I'm sorry for all these questions. The clicking of the right VISA arrow doesn't give me any VISA resource names on my system. I did a scan with Max which tells me that I don't have any GPIB connection (which isn't the case), altough when I check on Scope Explorer it tells me that I'm connected to GPIB and gives me its address. Ninskaya
Re: Confounded and Ranting
Hi all, this seems to be a problem for many of us ;-( I am a member of the 'full control' fraction - I prefer having all components including from VI.lib in a separate project folder - in order to limit verrsion influences etc. In one of my bigger project I created a little VI analyzer tool that checks for a given VI hirarchy, if all components are loaded from the very same position (folder). Chasing this little tool over the main vi of a given project has helped me several times and has forced a clean project over time. If anyone is interested in this little tool (ProjectStorageCheck.llb.zip, 45 kB), I'll gladly send it out opr to place it somewhere on the net. It is, however, just roughly translated from German and from LV6.02German. Greetings from Germany! -- Uwe Frenz ~ Dr. Uwe Frenz Entwicklung getemed Medizin- und Informationtechnik AG Oderstr. 59 D-14513 Teltow Tel. +49 3328 39 42 0 Fax +49 3328 39 42 99 [EMAIL PROTECTED] WWW.Getemed.de
Re: How to use Labview to control measurement in a vector network analyzer?
I have installed the required driver and have read through Chapter 16 but I still not sure how to get started. In Chapter 16, it says that I should begin with Getting Started VI. Can I know where do I find this command/menu? When I load LabView, I clicked New Read and Display.
