Re: multithread
Can you please explain what you want LabVIEW to do? The structure in the excel sheet can be most closely implemented with a tree. Or do you want LabVIEW to control the excel worksheet? Or do you want help with writing a multithreaded app in LabVIEW. (It is automatic by the way)?
Re: How can I easily step through Matrix Combinations in Labview 7.1?
I agree. I cannot find a combination or permuation way to manipulate the matrix to get the expected outcomes. An example will be exreemly helpful.
Re: UDP problems when building executables
There could be a number of reasons for this behavior. It may be that the function is not working properly on the run time engine (RTE). The best fix for this is to see if the problem persists in LV 7.1. It is the best version of LabVIEW to date. If you can post code that shows the problem then it can be tested in other versions. Your executable may not have all the settings that are in the development environment. The follow KB discusses a solution: http://digital.ni.com/public.nsf/websearch/65F76F247012DF68862562C70073BE06?OpenDocument";>Setting LabVIEW Preferences For a Windows Executable Lastly, UDP is a lossy protocol by definition. Consider using TCP instead if the losses are unacceptable.
Re: Cannot open Labview 7 without "not enough memory" error
I figure there are two possiblities. LabVIEW is poorly installed on your system causing the error or your VIs are corrupted. You can test the former by installing LabVIEW on another computer. If you can open the VIs there, consider contacting NI for ways to more throughly remove NI products from your machine. To test the latter, see if you can create new VIs in 7, save, close, and reopen them. You can also see if other VIs on your machine open. If your VIs are corrupted, then try to open them in your older LV, copy the Block Diagram over to a new VI, save, and open in LV 7.0. At the very least, you can get a screen shot of the diagram. Good luck!!
Re: Is the SVT Zoom FFT really more accurate than a regular full FFT with a large sample?
What are the basic differences between Baseband, Subset, and Zoom FFTs and when should I use each? Enjoy!!
Re: How do I fit a curve with two independant variables
Your code is awesome. I have taken a number of informal cracks at making a 2d lev mar function and have given up. I also want to complement you on your nice UI in the toplevel VI. It is clean and intuitive (plus it has directions if it is not so intutive for someone). Great Example!
Re: 0X1D8 error
You can check this in the bios when your computer boots. You can also check it in Windows XP by going to start >> settings >> control panel >> system >> hardware (tab) >> device manager (button) >> ports (tree) >> double click on printer port >> resources (tab). The memory address will be something like 378h, 278h, or something else.
Re: Open Independent Mulitple sessions with oracle in a LabVIEW exe
Your two other postings: http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=5065000800BFD8&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0";>"Parsing an SQL statement coming in the way of reentrancy." http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=5065000800C2D8&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0";>"NEW!! Parsing an SQL statement coming in the way of reentrancy." I put a link to all your postings here to help others on the discussion forum to follow your questions. The problem may be that your server has a single CPU and that it can only do one thing at a time. Another limitation may be the abstraction layer for your database. What version of the Oracle db are you using? Do you have this problem across computers or just on a single machine?
Re: NEW!! Parsing an SQL statement coming in the way of reentrancy.
Your other posting: http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500080022D9&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0";>"Open Independent Mulitple sessions with oracle in a LabVIEW exe"
Re: Parsing an SQL statement coming in the way of reentrancy.
Your other posting: http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500080022D9&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0";>"Open Independent Mulitple sessions with oracle in a LabVIEW exe"
Re: BREATHING TRAINER stimuli program to maintain constant etco2?
I am not sure how much of the program you need help with. There are several shipping examples for function generators. (open LabVIEW >> help >> find examples). These can be used to create sine waves so that you subjects can follow for breathing. Is this want you need? There are many people on the forum that are glad to help if postings contain sufficient information to generate an answer. I did not include any code because you did not list your version of LabVIEW.
Re: formatting of a chart works on a vi in labview but not with the same program as a .exe
I have not tested your code in 6.0 to verify the behavior. You are right about some properties not working in the Run Time Engine (RTE) but those properties work in the development environment. You can find out which ones by right clicking on the property >> help for (whatever the property name is). This should launch the online help which has a table decribing where the property will work. This table is reformated and more extensive in later versions of LabVIEW.
Re: Storing Data
There is not one document that describes the pros and cons of the different methods. Spreadsheets--cheap but usually limted in size if you intend to use with excel. No limit with diadem. Database connetivity toolkit--used with your own database. (it is the pros of the database but with the toolkits ease of use) DSC--slow (because it typically handles large volumes of data) but can automatically record thousands of datapoints. Your best bet is to give NI sales a call and have them help with the decision making. Based on your sentence description, I think you would be best off with creating a text file for your data. (Write strings to file). If you are worried about space, you can do a binary file instead.
Re: formatting of a chart works on a vi in labview but not with the same program as a .exe
I read your thread, followed the directions and I was able to create a LV71 executable that allows the user to select from the menu ring, rerun the VI, and the multicolumn listbox is resized. Is this not what you intend or do you want the program to run continiously? This way you start it once, it runs, you select from the menu, the multicolumn listbox changes, you select again, the multicolum listbox changes, ... . Finally you chose to stop your program, and the behavior ends. Are you using the continious run arrows? It is the icon with two arrows shaped in a circle. I wonder if the problem is with LabVIEW itself. What version of LabVIEW are you using?
Re: Step function generator
To elaborate. The function generators can be found on the functions >> waveform >> analog waveform >> waveform generation palette. There are shipping examples that show how to control the analog output of DAC cards. Open LabVIEW 7.1 >> help >> find examples >> Choose "Hardware Input and Output". You will have to navigate from here to what applies to your system. I suspect it will be something like DAQmx >> Analog Generation >> Voltage.
Re: Application Builder for labVIEW 7 Doesn't support any report generation function
The following KB discusses the error with having two different versions of Office when building executables. Ignore the 214... error number. http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/83211e3a088d0c3786256db700621fe8?OpenDocument";>Error 2146959355 When Running Exe on Machine With Different Version of Office After you install the new version of office on your development machine, you will need to uninstall and reinstall the report generation toolkit so that the toolkit installer will install the version of the VIs that work with your newer office.
Re: Upgrading from LabVIEW 6.1 to 7.1, get a MS C++ Runtime Error
I assume you get this error message everytime LabVIEW starts. This is not normal behavior. It is not even a common error. Have you tried reinstalling?
Re: dstp Hlp(refering to Messenger vi in the tutorial provided by ni: TCP ip intro
You can find the VI by opening LabVIEW 6.0 >> help >> examples >> communication >> datasocket >> ds writer.vi. You can also just remove it as I mentioned in the last posting and launch datasocket server manually. I chose to read the file as characters out of convienice. This does not mean that the VI is limited to text files. You should be able to open any file, interpreted the data as characters, send the characters, receive the characters, write the data to file, and have the identical file on the receiving side. If you perfer, you can change the method of reading the file to read it as an array of u8s or i8s--it does not matter because you are not interpreting the data in LabVIEW. All you need is a data type that will hold your file data for transmission.
Re: dstp Hlp(refering to Messenger vi in the tutorial provided by ni: TCP ip intro
It would be helpful if you could give the URL to the tutorial. I have not been successful in finding "TCP ip intro". Datasocket works like a bulletin board you would see if you were driving down the road. If something writes to the bulletin board (an advertiser), then your datasocket reader(you sitting in a car) can see the data. If your datasocket reader is doing something else like watching other traffic and several writes have taken place, only the most recent data is seen by the reader. This is because datasocket was lossy before buffered datasocket in LabVIEW 7.0 was introduced. Before you can do any communication with datasocket, you have to start the datasocket server. If you think about it, how would datasocket read receive data if no bulletin board exists. (if you missed it, the bulletin board is the datasocket server). There are two ways to create items (specifically called datasocket data items) on the datasocket server. Think of the the items as specific ads on a multiad bulletin board. You can create static items. This is rarely done and requires the use of Datasocket Server Manager. The other method is to dynamically create datasocket data items. I suspect this is what you are doing. When you first starting writing to the datasocket server the datasocket data item is created. At this point the reader will have something to read. The datasocket data item remains valid while all readers and writers to the datasocket server are active. When nothing is reading or writing (it could be just writing), the datasocket data item is removed. You can see this in action by going to the diagnostic page on the datasocket server. I suspect the behavior you are seeing in 1 is related to the behavior described in the above paragraph. I cannot say for sure because I do not have your code. I recommend using a shipping example for datasocket. They are found by going to the help menu of LabVIEW. These examples work.
Re: dstp Hlp pls
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500080092D6&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0?";>Your other posting
Re: dstp Hlp pls
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500080092D6&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0?";>Your other posting
Re: Cannot locate menu for the PID Toolkit
Sorry for the delay. It bothers me that your palettes do not show the proper VIs. You can however edit them by hand. http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/2d38006f8672194e86256b5200545d1c?OpenDocument";>How Do I Create a Custom Sub-Palette in the Functions Palette in LabVIEW 6.0 and Above? There are a whole bunch of Knowledgebase articles on the issue of palette customization. Go to http://search.ni.com/?col=alldocs&layout=TechResources&ql=a";>Advanced Search and look for edit custom palette.
Re: Datalogging and multiplot graphs/
There exists no LV7.1 eval.
Re: Datalogging and multiplot graphs/
LabVIEW 5.1 is pretty old. If you want to review LabVIEW 7.0, you can download the eval http://sine.ni.com/apps/we/nioc.vp?pc=res&cid=10440&lang=US&p_0=eval";>here.
Re: extfunc.cpp
There is no telling. I suspect you got this from a message in LabVIEW. I recommend chosing to send the error message to NI with the automated submissions. Chances are the error is random an there is nothing they will be able to do. Occassionally the errors are systematic with LabVIEW and they will have a resolution.
Re: Triggering Elapsed time measurements
See your other http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=5065000800A7D4&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0";>post
Re: I have a problem when using LabView6i and Office 2000.
Which object you can select depends on the kind of control you are creating. If you intend to launch and run Excel, drop an automation reference. If you want excel in a container, consider using an activeX document. You can also instert IE in the container and point it to an excel file. Take a look in the shipping examples for excel for a working example of how to make the activex calls. Excel programs are very numerous on the web. Go tohttp://search.ni.com/?col=alldocs&layout=TechResources&ql=a";>Advanced Search and search just the example programs.
Re: Microsoft Excel 9.0 Object Library
Look at the LabVIEW shipping examples. There are excel examples that you can inspect and use.
Re: How to show only 10 channels at a time in a Chart
I think what you are going to have to do is use three overlayed plots each with its own data. When you move the slider you make the chart you want to see visible and the other invisible. It takes a little bit of coding and a lot of alligning of controls but you can pull the illusion off.
Re: Install directory
This is not possible with the LabVIEW built installer.
Re: LabVIEW crashes when I paste to the diagram
Does this happen for a particular VI or for any VI? If it is for any VI, you should consider reinstalling LabVIEW, update your OS to the latest service pack, and updating your video drivers. If this is for a particular VI, then it is probably corrupted. Take a screen shot of your diagram (just in case) and rebuild the code.
Re: Block diagram expansion criteria
Sometimes I have to do it 4 or 5 times before I can get the expansion to work(that is repeatedly pressing the control and drawing a new rectagle). I have come to expect this behavior. I do not know how to fix it or whether it is a problem with the OS or LabVIEW.
Re: Can not set "Remove Panel" to "No" for dynamic VI
I am in agreement with Dennis. I am using LabVIEW 7.1 and I had to trouble setting "VI Settings" on dynamic VIs.
Re: problems running version 5.1 vi's on version 6i, the computer freezes after loading all vi's.
Try upgrading LabVIEW 6i to 6.0.2. You can also see if LabVIEW 7.0 evaluation has the problem. Finally, you may need to isolate the VI that is causing the problem. It may be corrupted and require copying its block diagram to a new VI to fix the problem with upgrading.
Re: PLOT THE OUTPUT VOLTAGE WITH RESPECT TO TIME
I cannot tell you any specific information about your device but if you want to plot your data in LabVIEW, I recommend using an XY Graph. This graph allows you to associate a specific y with a specific x. Consequently you can plot data where the time between the sample changes. Look in the LabVIEW shipping examples for an XY Graph example.
Re: LabView 6.1 crashes now and then when I try to get rid of an...
This is strange behavior and I have can't find anything on it. Do you get an error message? Do you see this problem on another computer? You might try reinstalling LabVIEW or seeing if LabVIEW 7.0 Evaluation resolves the issue.
Re: is symbol computation possible if I use string variable?
LabVIEW does not allow for a variable to be placed in a matrix. For a workaround, consider writing out all the math in LabVIEW. It is very ugly for high dimensions. For instance, |2 4| |3 a|= 2a -12 The right hand side of the equation would be easy to code in LabVIEW and it allows for altering the variable a.
Re: Horizantal Scroll
There is no setting that I have seen that will work for horizonally scrolling mice. I think this might be because if you hover your mouse over the horizontal scroll bar, scrolling on a regular wheel makes it scoll horizontally.
Re: Cannot locate menu for the PID Toolkit
If you have multiple copies of LabVIEW on your computer, see if it was installed to another version. If so, you can uninstall and then reinstall making sure that the installer is pointed to the correct LabVIEW folder.
Re: smtp send message.vi has a wrong send time
There is a bug in the way the LabVIEW treats daylight savings time in LabVIEW 7.0. Date/Time To Seconds primitive currently ignores it and that is the function used in the email VI.
Re: Customized button changes size on win98
Hi Joe, I have not been able to find a working 98 box. I still have no idea what could be the problem.
Re: How do I optimize the design/test cycle?
I have dug through all the corners I could find on the web and there is no documentation on this subject. I do not like posting a negative answer but you have been waiting for a week and I spent 2 hours on looking.
Re: Error:The specified network address is currently in use when exe file is run
I am not sure what you are doing but I think this is the information you are looking for: http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/4d966061ee84df5386256de1005808ca?OpenDocument";>Can I Make My LabVIEW 7.0 Executable Use Remote Front Panels? There are several other simmlar pages on the web. I went to http://search.ni.com/?col=alldocs&layout=TechResources&ql=a";>Advanced Search and looked for executable remote front panel .
Re: remote control
Here is something you might find useful http://zone.ni.com/devzone/learningcenter.nsf/03f7c60f17aad210862567a90054a26c/2ad405a06ebed71586256c4e00621c73?OpenDocument";>Remote Front Panel Tutorial If you want to search NI's site, I recommend the http://search.ni.com/?col=alldocs&layout=TechResources&ql=a";>Advanced Search.
Re: LV exe doesn't see support files
This is really strange. Have you been able to isolate the problem any? Have you tried building an installer for distribution?
Re: Customized button changes size on win98
Are you using a strict type defn? Can you post one of your controls?
Re: password protection on a control
Be careful with the mouse down? event and the dialog message box. You can get really strange behavior if you postion the front panel so that the message box appears over the numeric control. What happens is that you mouse down, this fires the even, the dialog box appears, you mouse up (but this message is never sent to the control), you click ok, and the numeric control continues to increment.This behavior is outlined in the online help (open LabVIEW >> help >> VI, Funtion and How-to help) under Caveats and Recommendations when Using Events in LabVIEW .
Re: How to apply 1/3 octave bandpass filter of about 10Khz on a signal
There is a toolkit for octave analysis. http://sine.ni.com/apps/we/nioc.vp?cid=3122&lang=US";>NI LabVIEW Sound and Vibration Toolset
Re: Is it possible to programmatically set the size and names of...
What you are asking to do is not possible with the present release of LabVIEW. As Dennis points out, there are some unreleased features that might do what you want. You can learn about them on the LAVA forum but to find exactly what you need may require a lot of patience if it even exists.
Re: How to apply 1/3 octave bandpass filter of about 10Khz on a signal
Can you post a simple example program?
Re: Graph Xscale properties don't work well with multipliers
The deal is that the image you see is not the image stored in memory. For sample sets with points larger than the pixels on your screen, LabVIEW will truncate/interpolate/labview magic the dataset to create an representation of your data for display. Setting your mouse to a specific data location will often result in a little movement to get to the closest point that is displayed. Workarounds include using a HUGE monitor or displaying fewer points at a time.
Re: unload dll
You cannot programatically unload dlls. You have to either shut down your VI or close LabVIEW.
Re: Trying to control a car using the Digital Control Unit
You may want to post to the daq forum and include information about your hardware. Are you using any hardware? Do you have drivers? The speed of dc motors depends on the voltage applied to them but the problem is that motors can require lots of current. If you are just using a daq card to supply voltage, you will need a current amplifier to drive the motor. If you want fancy control of the motor speed, you will need some method of feedback like an optical encoder.
Re: FIR Windowed Filter Coefficients
NI's coeficients are not normalized.
Re: asynchronus functions and Active X
Creating Call Back VIs without using the utility is very, very difficult. It did not even occur to me that you were not doing it this way. As a note, you can pass data into the callback by bundling it together and sending it to the User Parameter terminal. If you decide to change the cluster later, you will need to recreate the callback VI. You can save time in this case by control-c on all objects in the old VI and control-v in the new VI. Have fun with the callbacks. They are really cool.
Re: LabVIEW does not handle some .NET method calls correctly
I do not believe that LabVIEW can handle overloaded functions. You may need to dig through the class and find the exact function you want to call. If this not possible, you can always create a assembly that handles the calls for you and then call that from LabVIEW.
Re: asynchronus functions and Active X
I do not follow exactly what you are describing. I do know that the call back VI can be called at anytime by the ActiveX object. It does not matter what part of your VI is currently executing. If the event occurs, the callback VI will run.
Re: Trying to control a car using the Digital Control Unit
I have no idea what you are asking and I suspect that I am not the only poster in this situation. I surmise that Vernier has software for their new digital control unit and that it is written in vb.net. They have not created LabVIEW VIs for the new hardware yet. Are their dlls you can access or an activeX interface? LabVIEW 7 has rudimentary support for .net constructors. Look in the user manual for specific information on this. You may also want to search NI's advanced http://search.ni.com/?col=alldocs&layout=TechResources&ql=a";>search. This is the best way to search NI's site.
Re: Has anybody been able to develop labview vi's for the...
If you are going to write the LV code yourself, you should read "Using External Code in LabVIEW." You can find it by opening LabVIEW >> help >> search the LabVIEW bookshelf. This is the best source of information concerning calling dlls. You may also want to look at a LabVIEW 7 shipping example, call dll.vi. You can find it by opening LabVIEW >> help >> find examples >> Communicating with External Applicaitons >> Using External Code>> integrating dlls. It is very helpful.
Re: I encountered a problem with Peak Detector.vi:
Thank you very much. I am glad to help.
Re: using the parallel / serial port to drive 7-seg display
I am lurking the discussion forum so my posting here is independent of whether you are on trial or not. In response to your email that you sent NI support, I activated your trial support period. This gives you 1 on 1 access to NI support engineers via email (like myself) or phone. The support I give here does not fall under the trial period privledges--I would still answer your question whether you had a subscription or not. Anyway You need to read up on the parallel port. Search the web for a tutorial. The last time I looked this information was readily avaliable. There are 3 standard modes for the parallel port--ssp, epp, ecp. SSP is the original standard and is the easiest to use. You can set the mode of your parallel port in your computer's BIOS. This is the config page you get by pressing special keys when your computer is starting. You can also confirm the setting in the device manager of Windows. You also need to do this so that you can get the memory address of the parallel port. Chances are it will be at x278 or x378. This is important so that you can know what memory address to have output update. There are 8 data lines in SSP mode and there are 8 bits (one byte) you can write to the memory address. Each bit you set will corespond to the port bring a line high. The idea is that you will be manipulating the bits of an 8 bit number and writing that value to the memory address. For your clock, you just write another value to the port with the clock line you choose toggled. Jeremy NI
Re: I encountered a problem with Peak Detector.vi:
When I set your threashold terminal to 0.0015 and a width of 3, I got 7 peaks with the appropriate corresponding amplitudes. If you want more peaks, then decrease the threashold. When I set it to 0.4, I got 23 peaks. Since you are interested in getting all the peaks, I think you need a different algorithm. You should scan through the array and count points larger than the two adjacent points. This way, you know exactly what is going on and you will get every single local maximum.
Re: error code no 6
Here is a link to your other http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HFORCEKWTID=95035:5&HOID=506500080049CB&HExpertOnly=&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0";>posting. Although I miss guessed your answer, it has info on finding this kind of information on NI's website.
Re: what causes the problem no 6
You can find answers by searching on the http://search.ni.com/?col=alldocs&layout=TechResources&ql=a";>advanced search page. Look forlabview error 6 . You can also look up the error code in LabVIEW. Open LabVIEW >> help >> explain error >> enter 6 in the numeric field. You should get: LabVIEW: Generic file I/O error. --- NI-488: I/O operation aborted. I suspect the problem is that your file does not exist the the location specified.
Re: Can I change the order plots are written to an XY graph...
You cannot reorder the layering of the plots. More percisely, the ordering of the plots (like on the plot legend) is the ordering of the layering. Khalid is right on the money for a workaround. I give him 4 stars.
Re: How to enable Thread Local Storage in a DLL generated by application builder?
You might try making the VIs renterant (vi properties >> execution )before you build the application.
Re: lvrt.dll error on Windows XP
Do you get the error everytime you run your program? Since you cannot edit your code, you might try reinstalling the drivers and the LabVIEW RTE. There is not really a whole lot to be done for troubleshooting because of the lack of source code. You might see if you can transfer the application back to a 98 machine if nothing else helps.
Re: Reading characters in a buffer
Thanks for attaching the dll and the headers. It helped. Take a look at a LabVIEW 7 shipping example calledCall dll.vi . You can find it by opening LabVIEW >> help >> find example >> Communicating with External Applications >> Using External Code >> Integrating Dlls. It has an example on using char* from a dll in LabVIEW. It shows the C code and the VI.
Re: using the parallel / serial port to drive 7-seg display
If you are using the parallel port in ssp mode, you have 8 digital lines you can play with. Just use on of the lines for your clock. I believe the other modes (ecp ,epp) of the port use a clock, but use it will be more trouble than it is worth. Toggling a digital line of an ssp port is very easy.
Re: Newbie: Debugging external code
To add to Rolf... Look in the "Using External Code in LabVIEW" manual for creating a debugable CIN that allows you to step through the code. The directions are not extensive but they are all that is avaliable. You can find the manual by opening LabVIEW >> help >> search the LabVIEW bookshelf.
Re: Exe with Application Builder
I believe so. What you will need to do is build just one application. The deal is that you cannot share data across different applications but different VIs within the same application is fine.
Re: I encountered a problem with Peak Detector.vi:
I recommend this KB:http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/2b685d5b2a919e2a8625654c006af03c?OpenDocument";>How Does the Peak Detector VI Work?
Re: web conferencing in labview?
LabVIEW RT is not going to help. It is essentially a headless deterministic computer. LabVIEW can easily transmit data across the net but I do not know if you will get the throughput you want especially if remote desktop is considered slow. You will have to experiment to see if LV's performance is satisfactory. There are various commerical products for web conferencing products. They have been optimised for doing this sort of thing. Some have activex interfaces so that you can have programatic control of the software from LabVIEW. This is the route I would take if performace is a strong issue.
Re: An anolog signal will be received by my computer through the...
If you have the frequency, you can find pulses per minute by multiplying by a scalar.
Re: PCMCIA card communication with LabView
Niko is right. The functionality Vanessa is looking for is not availiable from LabVIEW. The only people that would have implemented this feature would be the hardware manufacturer, and they are likely to have built the function into a dll that LabVIEW can call. I recommend contacting the manufacturer to see if they have some suggestions.
Re: Motors - Code is getting messy... I'm not smart enough to use arrays and clusters.
I agree with Satans Little Helper about the unitialized shift registers. There are a couple of docs online (http://search.ni.com/?col=alldocs&layout=TechResources&ql=a";>advanced search) but http://zone.ni.com/devzone/conceptd.nsf/webmain/732CEC772AA4FBE586256A37005541D3?opendocument";>LabVIEW Performance and Memory Management covers this and explains how to get better performance out of your code.
Re: Best way to pass an array of waveforms inbetween VIs
If you think Coastal Marine Bird rules, be sure to give him 4 stars. The rating shows up on his profile.
Re: why my labview 7.0 shut off automaticlly?
This is not normal behavior. I recommend reinstalling LabVIEW to see if that resolves the problem. You might also see if you can install LabVIEW on another machine. This way you can see LabVIEW work and can use that machine as the "correct" machine for troubleshooting.
Re: Adjusting Bitmap color range
Take a look at Mask Example.vi. It is a shipping example that shows how to mask of areas of a picture control for coloring. I am think that you can put your image in a picture control and then overlay an image having custom color regions. You can then adjust the custom colors.
Re: Combobox pausing operation of other VIs
I have been trying to reproduce the behavior and I cannot. Can you post a simplified version of your code. I suspect what is happening is that your User Interace (UI) is being locked by the combobox. You might see if turning off multithreading helps (open LabVIEW >> tools >> options >> performance and disk , toggle the setting for "run in multiple threads", shutdown LabVIEW and restart.)
Re: Need to output time
I believe the buffered counting could be the problem. You might consider posting to the daq forum for help on this aspect of your code. Were you able to learn anything when you auto indexed your wires? I was thinking over lunch that the default values for numerics is zero and when you concatenate arrays of different lengths the shorter one is increased in length with default values. If your loop itterats fewer times than you think, this would explain the column of zeros.
Re: VI loading times-out for 50 seconds when another networked PC is shut down
I agree with Dennis. I also want to point out that mass compiling would solve the loading delay problem for all of your VIs.
Re: LabView 7 Express will not shutdown completely?
Be sure to check your firewalls. SP2 has the firewall turned on by default. Consider turning it off or allowing LabVIEW privledges. It may be that a LV process like the NI license manager cannot finish behind the firewall.
Re: add support information
I strongly suspect the "Click here for support information" is an option with the microsoft installer or MSI. Although LabVIEW uses the MSI for its executables, this functionality is not exposed. I have tried several times in the past to edit a MSI and it is nontrivial. There are software packages for sale that can help make this easier. As a workaround, you might consider adding a dynamic VI to your application called About.vi . This way if you go help >> about , your VI will pop up with any information you want it to show.
Re: Crash of LabVIEW executeable after some hours
I normally suggest using the evaluation version of LabVIEW 7.0 to see if errors like this have already been solved, but you mention the problem does not occur in the developemnt environment. LabVIEW evaluation does not come with application builder. There are a lot of things that multithread in LabVIEW--activex, dll, etc. It may not be LabVIEW itself. Rather than pulling your hair out tracking down the issue to modify the way the executable works. You can copy the line: ESys.StdNParallel=0 into your executable's ini file. This should make it run in a single thread. See http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/65f76f247012df68862562c70073be06?OpenDocument";>Setting LabVIEW Preferences For a Windows Executable for more info on this technique.
Re: want to convert an array to image in gray scale
I am not sure what you are doing. Can you post a simple example program?
Re: want to convert an array to image in gray scale
I am not sure what you are doing. Can you post a simple example program?
Re: second scale on xy graph not showing up
Sometimes the charts and graphs become so customized that they stop working properly. This happens all the time and you will save yourself hair loss and heartburn by just placing a new one and starting over (like you suggested). Good luck with your code.
Re: Stopwatch which can save split/ Laptimes to a file
I am not really clear what code you need. Here is an example program for measuring split time. http://sine.ni.com/apps/we/niepd_web_display.DISPLAY_EPD4?p_guid=B123AE0CB968111EE034080020E74861&p_node=DZ52034&p_submitted=N&p_rank=&p_answer=&p_source=External";>Using LabVIEW as a Stop Watch to Track Total Time of an Event You may want to look on NI's http://search.ni.com/?col=alldocs&layout=TechResources&ql=a";>advanced search page for more hits. It is better than NI's easy to find search engine.
Re: HELP!!!What is TIME LIMIT parameter in triggered acquisition???
I am a lot rusty on my daq. I think this is what you need. http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3E4A156A4E034080020E74861&p_node=DZ52308&p_source=External";>Acquire Analog Input Data Using a Software Analog Trigger You may want to post to the daq forum. I highly recommend searching NI's http://search.ni.com/?col=alldocs&layout=TechResources&ql=a";>advanced search page for example programs.
Re: Invoking the Tools->Compare VI's functionality from my LV program
The VI is called procmpheir.llb\CMP compare two VIs.vi . Its UI is not the same as the one you get from the menu, but it looks to me like NI wrote a pretty wrapper for this VI (which really does the work). You can do the same in your application.
Re: while loop causing problems with sent commands?
I cannot see anything wrong with the telnet side of your code, but I am no telnet expert. On the LV side of your code, you may want to move the boolean terminals inside of the event that pertains to them. This way your buttons will pop up after the event is fired.
Re: Webserver with Direcway
For those of you who do not know, Direcway is the satellite download service for broadband internet access. I searched the website and could find no references to anyone else having problems with the LabVIEW webserver and Direcway. This may be due to few people having the system. I suspect the problem has to do with the network dropping out. You may want to check this as well as seeing if other programs are interfering with the webserver (virus scanners, etc).
Re: Invoking the Tools->Compare VI's functionality from my LV program
Compare VIs is a VI. You should be able to find it in .\labview\project\procmpheir.llb. I did not check to see what was password protected. You will not be able to get the passwords from NI, but you might be able to use the subVIs.
Re: pass complex array into matlab scrip
The matlab script node does not take complex numbers. You might try passing two real arrays into the node--one for the real component and one for the complex component. Once inside you can try to merge the arrays or just use the information separatly. I do not have matlab so I cannot offer example code.
Re: How can we change the name of dynamic events selector label in Event Structure
I have used dynamic events a bunch and I do not thing there is a better way to do this. Your VI is an excellent example!!
Re: 3D surface plots with intensity value to overlay at each point?
I have some beta software on my machine for the 3d graph activex control. Just delete the plot, drop a new one, and hook it up. I do not think there are any settings in the plot properties, so it the replacement should work like a champ.
Re: Controlling Khepera Robot 'Invalid page fault' errors using khepera gripper
I had no idea what you were talking about until I searched Google. The company K-Team manufactures the khepera robot. I recommend contacting K-Team to see if they have seen the same problem. You can attempt a reinstall of LabVIEW and possibly the OS if they have no information. If you would consider an upgrade too (LabVIEW is made better every release). Go to http://www.ni.com/labview/ and download the LabVIEW 7.0 evaluation. This way you can see if the problem persists.
Re: how do i make a the black area of the graph transparent.
You need to use the paint tool and right click in the black area. A window should pop up to select the color. Choose the T in the upper right corner. This should make the black dissapear. You will then need to make the rectangle decoration of the waveform chart invisible too. It is done in a simmilar way.
Re: Is there a common or standard list of words to "ignore" or omit in the meta word search?
You may want to post http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=205&HUSERSHADE=0&HOID=50650011003508&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0&USEARCHCONTEXT_TIER_0=0&USEARCHCONTEXT_TIER_S=0&USEARCHCONTEXT_QUESTION_0=meta&USEARCHCONTEXT_QUESTION_S=0";>here.
