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)?
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.
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 i
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 fro
What are the basic differences
between Baseband, Subset, and Zoom FFTs and when should I use
each?
Enjoy!!
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!
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 somethi
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&H
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"
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"
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 t
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 i
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 toolk
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, i
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".
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 Machin
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?
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 t
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
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500080092D6&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0?";>Your
other posting
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500080092D6&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0?";>Your
other posting
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
There exists no LV7.1 eval.
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.
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
See your other http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=5065000800A7D4&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0";>post
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 at the LabVIEW shipping examples. There are excel examples that
you can inspect and use.
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.
This is not possible with the LabVIEW built installer.
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 i
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.
I am in agreement with Dennis. I am using LabVIEW 7.1 and I had to
trouble setting "VI Settings" on dynamic VIs.
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.
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
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.
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
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.
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.
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.
Hi Joe,
I have not been able to find a working 98 box. I still have no idea
what could be the problem.
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.
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
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=TechResource
This is really strange. Have you been able to isolate the problem
any? Have you tried building an installer for distribution?
Are you using a strict type defn? Can you post one of your controls?
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 m
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
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.
Can you post a simple example program?
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
You cannot programatically unload dlls. You have to either shut down
your VI or close LabVIEW.
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 suppl
NI's coeficients are not normalized.
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 lat
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.
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.
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
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,
Thank you very much. I am glad to help.
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
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
diffe
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
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:
Lab
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.
You might try making the VIs renterant (vi properties >> execution
)before you build the application.
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 b
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 usi
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
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.
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.
I recommend this KB:http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/2b685d5b2a919e2a8625654c006af03c?OpenDocument";>How
Does the Peak Detector VI Work?
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
If you have the frequency, you can find pulses per minute by
multiplying by a scalar.
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 manufact
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
Per
If you think Coastal Marine Bird rules, be sure to give him 4 stars.
The rating shows up on his profile.
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.
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.
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 >> performan
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
I agree with Dennis. I also want to point out that mass compiling
would solve the loading delay problem for all of your VIs.
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.
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 packag
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 L
I am not sure what you are doing. Can you post a simple example
program?
I am not sure what you are doing. Can you post a simple example
program?
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.
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 Trac
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 high
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.
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.
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 p
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.
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 examp
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!!
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.
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 cons
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 s
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.
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