A few more thoughts:
1) Shane has definitely hit on the right idea, but there is another
dimension to it. Using complex data structures does add additional
memory and performance hits beyond the fact that you have to keep all
of the data together. When storing data in memory there is obviously
so
- Original Message -
From: "John Brohan" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, May 10, 2004 7:19 PM
Subject: Graphs placed over indicators causing slow operation.
> Hello
>
> I have an XY graph which is visible sometimes and not visible at others.
It
> seems important
Greetings, Newbie~
Try Ctl+B
That gets rid of all your broken wires
Good luck, and welcome!
Eric
Greetings!
"Localhost" does not require any name resolution...it is a "builtin"
name in a windows environment. A "real" machine name requires name
resolution,which always requires some time. You might try assigning
your own machine as the name resolver. (YOu might need to poke around
to see wha
Chris Labview;
Yes. From the Edit menu, select "Remove Broken Wires". The keyboard
shortcut is Control+B.
Regards;
Enrique Vargas
www.visecurity.com
He slightly mistated what he needs. There is the application which is
in a user defined directory and then he needs to install the device
drivers in the instr.lib directory that resides in LabVIEW 7.0 or 7.1
etc. and he is trying to find an easy way to determine where to
install the drivers. If Lab
Le vi joint me cr=E9=E9 un erreur lors du download des sub-vi.
- Dans LabVIEW 7e, il est pr=E9f=E9rable d'utiliser les vi express. Dans
la palette de contr=F4le, DAQ, DAQ assistant (Carr=E9 bleu). Utiliser le
compteur 0 ou 1 de la carte 6024 et g=E9n=E9ration d'impulsion. Cette
assitant vous donne
> Is there a way to programmatically duplicate the Y scale of an XY
> Graph and to associate it to one of the multiple plots.
You can show and hide a scale, you while a VI is running, LV cannot
create a new scale.
Make your graph in advance to have the number of scales you need, then
programmat
Thank you great firstly!
According to your advise, I used Get column information. But
unfortunately, error 4101 always occured when using a index array vi
following it to get certain columnname. I want to know the index of
column and row for the first columnname in database is both zero?
I think it
Tor Arne <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>...
> I want my labview program to find out the number of the last record in
> a MS Access database before I write new data to it.
> Is this possible with LabView 7.0?
>
> Thank you.
>
> Tor Arne
And don't forget that you can
Hi FerozP:
I've try it, it will closed by itself when I run it.
Hallo,
I've installed some instrument driver libraries on our network to make it
available to several developpers.
After I tried to make these drivers visible in the function palette by
Tools/Advanced/Edit palette and New SubMenu Point to.mnu file, LabVIEW is
crashing all the time.
No matter w
I'm a newbe..
Is there a way to clean up all the wires at once?
Hello
I have an XY graph which is visible sometimes and not visible at others. It
seems important what it is covering. For example if it is covering another
graphic with a changing display the whole process is slowed down. If I
remove the covered graphic or make it not visible speed improves..
Th
At 16:42 -0400 5/8/04, [EMAIL PROTECTED] wrote:
>My problems with doing 9-bit serial are _almost_ resolved, but the required parity
>switching between send and receive is on the hairy edge, timing wise, sometimes
>missing the first byte (the responding device's address). I have now gotten it to b
I use a PCI-MIO-16E-1 card and I want to record and, after, extract a
profile of current in the FIFO. How can I do it ?
I just bought a IOGEAR 4D Web Cruiser GME421 mouse. It has a scroll
ball to scroll vertically and horizantlly. It works with other
applications but does not scroll horizantlly in Labview. So I am
wondering if there is a setup I can change somewhere to use the scroll
ball to scroll horizantlly in La
I am very very new to Labview.
I have some very basic questions which I couldn't resolve though I
have > 2000 pages downloaded.
It seems the more I download the more I get confused.
Are very basic questions welcome here ( which I can't find in the
archives ) ?
Thanks.
I have installed LabVIEW 6.1 and RT Module.
I compile an executable, and when I start I will be asked to choose in
which Platform my application should run (LabVIEW for Windows / RT
Engine).
The point is that I don't want to have this question, I would like to
start my application just under Window
i have a 2d array of clusters. How can i write it into a file ?
thanx
Hi All,
I have a AT-GPIB card and i have connected 3 instruments to the GPIB
bus(2-Agilent DC power supplies) and 1 California AC source to the
following address 1,5,7 resepectively i can communicate with these 3
instrument without any problem. Now i have connected one more
instrument even that is
I am self-taught in LabView like most people in academic science, but
the main VI I use has finally become sufficiently complex that I have
to worry about memory management and other concepts that beginners
don't normally worry about.
so I read the "LabVIEW Performance and Memory Management - Tuto
I want to read Data form a txt-file into LabVIEW. The data looks like
1.23456E-7. LabVIEW only takes three digits at the right side from the
".". How can I handle this?
Arno Smeets
PS: You can answer in english, german or dutch.
I use a PCI-MIO-16E-1 DAQ card and I try to configure a buffer and
write 2000 points in the FIFO. I've installed all drivers and the last
version - I think - of MAX (august 2003), but LabVIEW 7.0 indicates
that a -10401 error occured.
(just for information, my OS is NT 4.0 ...)
Can you explain me w
I want my labview program to find out the number of the last record in
a MS Access database before I write new data to it.
Is this possible with LabView 7.0?
Thank you.
Tor Arne
Is there a way to connect two PCs via GPIB, both running a Labview
program? I just want to excange text files between them. The GPIB
cards are PCMCIA-GPIB cards from NI.
Problem Description :
Labview 7 has been installed followed by PID control toolkit 6.0. The
installer said that the PID control toolkit was successfully
installed.
The Manual states "Refer to the LabView PID Control Toolset Help by
selecting
Help>>PID Control Toolset Help. There is no menu for the
I am trying to run the Function Generator example VI using an invoke
node. I get an error code 1000 with a comment that "The VI is not in
a state compatible with this operation". What could cause this?
Hi,
I've just passed through "Labview Basics 1: Introduction" and now I'm
trying to communicate with a Ballbar (from Renishaw) through a serial
port. After having tried severals examples from the manual about VISA
communication, I've downloaded the following example from the website:
"Basic_Serial_
Is it possible to use Filedpoint 4.0 and Labiew 6.1.
I'm using now: Fieldpoint Explorer 3.02
Tia William
I want to create a loop so that I have motion back and forth ( left
and right off the limit switches)from a track.
Please anyone help me to create this loop.
thanks
Ben
Does Labview 6i work on a kernel 2.4 or do I have to upgrade Labview
to 6.1 or more ? Today, my kernel is a linux 2.2 and I have to upgrade
to a kernel 2.4 with a Debian.
hi,
i am working on LV and using formula node structures. In order to save
memory, i have to use single precision numbers. When i am using
formula node, even if my inputs are single precisions, my outputs are
double precision number. How can i change it?
thanks
gaetan
I am using labview 7.0 with internet toolkit. When I tried to use
"SMTP send message.vi" to send alert message, I got the wrong DATE
field. The time is off by a hour.
I am trying to determine where LabVIEW is installed to install my
application files. I am using HKEY_LOCAL_MACHINE\SOFTWARE\National
Instruments\LabView\7.0 registry key to find the LabVIEW install path.
I plan on adding a look at the Current Version key to determine the
current version. I wanted t
When I set my datasocket urls to dstp://localhost/var instead of
dstp://machine_name/var the various connections are made MUCH faster.
When using localhost, all variables seem to connect instantly, while
if I use machine_name instead, it seems to make about 1 connection per
second (I'm just watchin
Due to the vi "get column name.vi" paremeters,no table name has
connected to the vi. So, I want to ask how to use this vi for gain one
column name of a table. Maybe there are some other ways to solve
column name getting.
Thanks.
I am using a Dialog Control to control a lot of user interfaces in an
application. In addition, I hide then make visible some other
controls that sit in the dialog control. In 32bit color, this works
and looks great. On some machines with low bit color settings, I am
getting a ghosting effect.
--7454104.1084226266466.JavaMail.quiq.tekken
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Ich habe den WEB Zugriff meiner Apllikation aktiviert. Es l=E4uft eine
Weile, dann st=FCrzt LabView mit einer allgemeinen Schutzverletzung ab.
Was kann die Ursache
I need to solve a very complex equation (in fact it's a 4x4
characteristic equation), but the matix is too complex even with
BESSEL, HANKEL functions of the vaiable{variable is also outside bell,
hankel functions}, Because of it's complexity, I want to use iterative
method: i assume a initial value
Is there a way to programmatically duplicate the Y scale of an XY
Graph and to associate it to one of the multiple plots.
Does anybody know how to access "Activator" class of .Net Framework
from LabView 7?
How to synchronize 4472 with 6115?Could you give me an example
programs or some advices? I have searched at ni.com,but I can't find
this kind support.Thank you!
I'm thinking of using Labview to develop an automation testbed to
validate a newly system design. I would need all the helps out there
such as:
1/ what do I need in order to design/control and vary 3 HP power
supplies and temperature of a thermal chamber. All with GPIB
interface.
2/ To execute some
When I using activex control i.e microsoft forms 2.0 Listbox method
"AddItem", LV automatically closed. But it is not happen when I used
its property such as "backcolor". Please tell me how to solve this
problem
i am able to get color images in the continues shot but when i try to
snap a color image which i need for my processing i get only a
monocrome image
I have been using lv_vfw.llb VI's for grabbing images from a CREATIVE
WEB CAM ,i am able to get color images in the continues shot but when
i try to
Acquiring 4 channels at 10kHz using PCI-6070E card and Labview 7.0. I
need to average a signal that is time-locked to an analog trigger. Is
their an available vi to accomplish this?
I am acquiring 4 channels of data, sampling at 10 kHz. I am using a
PCI-6070E board. I need to average a biological
I have been using the continuous wavelet transform (CWT.vi) from the
signal processing toolset. I was wandering whether the CWT.vi uses the
equation in the SPT manual (chapter 9 page 4) because I have not seen
this in any academic textbooks on the subject and the manual does not
refer to this as th
I want to plot SCR Char for different value of the trigger current so,
what i want is each time i take different value of the trigger
current from the user, and calculate the corresponding forward current
and voltage etc. it should plot the V--I for all these values at the
same time,(for comparat
Dans le cadre d'une communicationTCPIP, je veux que lorsque le serveur
re=E7oit une commande donn=E9e, il lance une acquisition sans rompre la
liaisonTCPIP. Or,si je fais une boucle,on reste bloqu=E9 dans la boucle,
si je n'en fais pas, l'acquisition se fait sur une seule
it=E9ration.Comment puis-j
How to draw an Intensity graph which x/y coordinates do not match the
2D-Matrix indices and do not be equidistant?
Hi,
I am trying to draw an intensity graph that do not have equidistant
x/y coordinates. These coordinates are not integer and then do not
match the indices of the 2D matrix.
I do n
You can use ActiveX to do anything:-)
Hi Gabi,
if you are not having the newest NI-DAQ driver(7.2) you should first
update it. You can download the driver for free on our homepage.
Perhaps the delay is only a small bug which is fixed in a newer
driver-version.
If this doesn't help, can you post your VIs? I would like to look at
your c
Speaking for myself (also a self-taught LabVIEWer),
1) Using clusters "to encapsulate data into logical data structures"
is fine. The problems start when you group lots of un-related values
into a cluster just to get rid of wires. By doing things this way,
you might need to access a large cluste
Hello Bichillo,
I think the best idea here is to contact Adams as they should know if
any products are available for their modules. Have you contacted them?
The product you would need is a Modbus Server running in Linux (OPC
would be the best choice, but TCP/IP should work too). Then LabVIEW
woul
can someone help me?
I am really confused about the problem and much work must be put
down.
Thanks~~
Dear LarsRoe,
Thank you for the reply.
I couldn't find out the Sound scheme in version 7.
Could you please give your guidance to me?
Thank you again.
If you have specific controls or indicators that exhibit this effect,
you may want to replace those objects. I chased down one of these in
LV 6.1 and that fixed the problem. I was suprised!
I was suprised because it seems that every other grphics related
anomaly that I have noticed in LV were alwa
Thanks for the info Rolf. I will take a look at your suggestions.
Hello Sanaa
The failure doesn't appear each building of application. My
application uses about 500Vis and a lot are called dynamically. This
application makes measures driving 5 devices (IEEE).
What sort of information do you want?
Thank you very much for your help
Hors
Yes, CWT.vi uses the equation 9-2 in the SPT user manual. CWT is NOT a
form of DWT.
"Continuous" in CWT.vi does not mean online processing signal. CWT.vi
from SPT computes the discretised Dyadic Wavelet Transform for a
discrete signal. You may also refer to page 148 in the book, a Wavelet
Tour of
Thanks for your answer. My question is more on how to display the data
as an image. Lets say the every NUMBER of SCANS TO READ I get from AI
READ while I am looping, represents one line in an image. How can I
display the image as it is being acquired? How can I save it in a
standard jpg, png or bmp
As I suspected. Besides some introductory level knowledge of Pascal
and C, I do not have the benefit of programming experience in other
languages, nor time spent on Info-LabVIEW. I find that it is fairly
easy to get the job done in LabVIEW without a more general
understanding of the text-based pr
The beep VI doesn't use the PC speaker unless a sound card is not
installed (it calls the Windows MessageBeep function
(http://msdn.microsoft.com/library/default.asp?url=/library/en-us/debug/base/messagebeep.asp).
If you want to use the PC speaker you should call the beep function
(http://msdn.micr
Just to clarify. This was a problem I also found but didnt understand
this solution until I had fixed the problem myself. Simply I had
created a top level VI and added a sub directory which included the
top level VI. In effect this meant that I had included the VI twice
in the build. Once I rem
If you want to get the names of the columns in a table, you use Get
column Information. Get Column Name is used to get the names of
columns returned as the result from a query.
Hi Nutronik,
here is a Link to our tutorial concerning Windows NT embedded and
National Instruments products:
http://zone.ni.com/devzone/conceptd.nsf/webmain/209EAAC345736690862569C30074EB7A?opendocument
Regards,
Peter Weber
NI Germany
The sound scheme is part of the Windows OS, not LabVIEW. Look in
"Start >> Control Panel >> Sounds and Audio Devices". Now open the
"Sounds" tab. I'm using XP, so it may be slightly different if you
are using, say, Windows 2000.
On the bottom, there should be a list of sounds, such as "Asterisk
thanks
You don't say what the data represents. Is it 3-channel RGB? Is it
intensity?
You can use the intensity graph to show an X vs. Y vs. Intensity
image. If you have a monochrome camera, that makes a fine image - just
set your min and max colors to be black and white.
If you mean RGB, one way is to sc
Thanks for your quick reply! That is really helpful.
You're doing a binary waveform transfer. I don't have a manual handy
right now so I can't give you any details on the formatting. I would
suggest that you look at the LabVIEW driver and see how it's done
there if you can't figure it out yourself from the Tek manual. I wish
I could offer you more he
Yes, I'd be interested to see an alternative solution, especially as I
have no idea what a mixed base adder is!
Andy
Thanks Scott,
Unfortunately there isn't any handshaking available. The device I'm talking to is
in production. It is on a RS-485 bus, which allows a number of serial devices to be on
the same line. The "mark" parity raises the parity bit, which is a signal to all the
devices that the next byt
when I use serial write.vi from Labview 6.1 there is no problem i can
communicate with my RS-232. I am unable to communicate with the same
RS-232 when I made another program in Labview 7.0 using VISA's. My
Program is a simple one with visa intialization, visa open, visa write
and visa close. It doe
When you use a Trigger&Gate Express VI the Dialog Box Options permits
you to configure the VI. I am asking if it is possible to control
Dialog Box parameters with controls on the Frontal Panel. I am
especially interested on Start Level Threshold.
Change the format to %.6f instead of the default %.3f and this should
take care of you.
Joe
Years of working with GPIB has taught me many things, but the most
important has been that when it works, it's great, when it doesn't,
it's very frustrating. 10 meters might be a problem, but I doubt it.
GPIB will usually work 25-50% beyond the written specs, especially
with so few instruments on
Hi, I have the same problem as you, but I haven't yet solved it. Did
you solved your problem? How?
Regards
Hi there!
The run-time menus should work fine. Can you give me a little more
information:
What happens when you try selecting one of these menus?
Are you able to see the remote front panel working as expected, and
are you able to take control?
What version of LV are you using?
Regards
StuartR
Suppose the caculate is correct,it should run no problem.my robot arm
is work well.
i think maybe the initial position of your robot arm is not correct.
the problem should be caused by the diference between math method and
the arm.
My method would also make use of SQL -- using the count function on a
key field:
select count(fieldname) from mytable
This will return the total number of records in the table. I believe
Access (through SQL) refers to the first record as record 0 (zero).
You would want to double check that. If
Could it be that you only have the Base version of LabVIEW? Only the
Full and Professional versions of LabVIEW have the Advanced Analysis
libraries.
Brian
As Les said, it's not exactly trivial. A similar question came up on
the GPIB forum http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=5065000800FAD1&USEARCHCONTEXT_CATEGORY_0=_26_%24_13_&USEARCHCONTEXT_CATEGORY_S=0&UCATEGORY_0=_26_%24_13_&UCATEGORY_S=0";>here.
P
It is glad to meet you who take up the robot at here.
I had read your article and vi ,i think your problem is at the
algorithm of your robot arm.
the problem you had encountered is redountant control of robot and
there are many method to solve it .for example optimise theory .
u should look up some
yes, I would use an sql query with the 'MAX' property on a counter
field.
example: SELECT Max(counterfield) FROM myTable
Greg,
Both JLV and Wiebe have contributed advice that I would give. The
only digital devices that we sell that allow for non 0-5V levels are
the 655x boards discussed in the link JLV provided. However, if an
analog signal will work, we have a new analog output board called the
NI 6723 that has 3
Go into MAX and see what versions of NI-VISA and NI-SERIAL you are
running. We have had lots of problems matching up LabVIEW and the
correct versions of these (especially with RT). LV7 has some problems
with older versions of VISA and Serial and LV6.1 has problems with
newer versions of them. And o
Before doing any LabVIEW code, first verify communication with a
terminal emulator program such as Hyperterminal or ProComm. If that
works with the command, then check the user manual and see if the
instrument requires a termination character at the end of each
command. This is usually required and
I would suggest looking at your computer's DST settings - perhaps you
have set the clock ahead but not turned on DST. If so, the conversion
to GMT and back will not be correct.
The KnowledgeBase listed above is correct. The main point to consider
is that the DSA cannot except external sources, so it will have to be
the "master" and the S series board will have to sync to its scan
clock. The NI DSA devices are programmed using NI DAQ function calls
and there are many shi
Yes, LabVIEW 6i works on the 2.4 kernel.
I am currently runing the Debian testing distribution with the 2.6
kernel and was able to at least run LabVIEW 6i. Don't use 2.6 though,
IIRC there are some new threading issues that affect LabVIEW 7.0 and
earlier with the new threads in 2.6.
As far as I
Hi Due,
Here's what I tried and it all worked well on my computer:
1) File >> New VI
2) Placed an Automation refnum control on the front panel.
3) Right-click on the refnum >> Select ActiveX class >> Browse >>
Microsoft Forms 2.0 Object Library version 2.0 >> ListBox
4) Place an invoke node on th
Hi Gaetan,
All you need to do is declare the outputs as "float32" this should
give you single precision outputs.
Hope this helps,
Nick
also if I use the ip address, I get the same poor connecting
performance as using machine_name
The Application property App.Version seems to show the LabVIEW version even
with built applications.
"TrackerMan" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I am trying to determine where LabVIEW is installed to install my
> application files. I am using HKEY_LOCAL_MACHINE\SOFTW
Hello,
Thank you for contacting National Instruments.
As Dennis had mentioned, there are many example programs that ship
with LabVIEW that demonstrate how to take measurements from multiple
channels with either a finite or continuous amount of data to be
acquired. In LabVIEW 6.1 you can find the
You can, but you might not enjoy it.
I don't have the specifics for your GPIB cards, so I don't know how to
do it for them, but in a previous job we put one of the GPIB cards in
a non-System Controller mode. Then we could make it look like an
instrument. Sorry I can't provide more details as it h
Additional note: Sorry, I should have also added an event for
the stop button. Modify as required.
Hi,
your answer helps but LabVIEW only reads 6 digits at the right of the
".", I need more, f.e. 1.234567890123e-10. Some other questions:
1) How do I read every number in the file? Probably a while-loop, but
I have no expoeriences with them yet.
2) How did you make the jpg-file?
Thanks a lot,
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