Thanks for your input, I think from your suggestions that the mic port
is not the way to go for this application. I have a one channel
parallel port data logger which could be used. Thanks again!!
I've read that it's possible to develop LabView code for a standalone
chip, such as an FPGA or a DSP; I'm not too sure of the details.
Please can someone who knows this field well point me in the right
direction? I wish to look into running LabView on an independent
embedded system of some sort.
Dan Press [EMAIL PROTECTED] wrote:
I create a separate application; let's call it the YYY_Project Print
Service.exe. The application's job is just to sit there, but its INI
file configured the VI Server to listen on a port other then the default
3363. See the app note -
Overall a very
I am new to labview could any one please tell me the best way by which
I can learn labview?
Hi Sattu,
NI run some excellent training courses for LabVIEW, contact your
local office for details on their basics 1 and 2 courses.
Hope this helps,
Nick
sattu;
LabVIEW includes tutorial you can follow. At the splash screen, click
on bLabVIEW Tutorial/b. You can also access the tutorial from the
Help. Make sure you also look at the different examples included in
LabVIEW.
Check out the a
I've not had that specific error. Can you execute the SQL command in
the DBMS on which the DB was developed? Can you execute the SQL query
in an interactive SQL editor on the Labview system? One thing you
may find is the ODBC driver, which in this case appears to be for an
MS Access DB, may not
Thank u for your attention. I am sorry, but I have not been able to do
what you suggested. Your picture is nice, but it is impossible for me
to reproduce it because it uses Functions I have never seen (I don't
even know their names...).
Could you please be more precise?
I am a new user.
Do u mean to look at NI Example Finder? I have got LabVIEW 7.0, I have
tried the Search option, but I have not been able to find what you
suggested. It says: no examples match your searcg criteria
You should be able to meet this objective -- however, your going to
need to be a little more specific with what you have (hardware) and
what the issue is.
This doesn't work. The option you mentioned was not selected, but now
it is. Indicators are not cleared when I open the VI. Maybe because I
don't know what is when you say:
If your subVI is set to open FP when called
My main VI is set to open Front Panel when called. I don't know what
about the
I want to convert this timestamp to string.
Use Format Date/Time String.
Also how to compare timestamp data type with string timestamp.
Because i want to read the time stamp
from file and compare with current timestamp.
Why can't you save the time stamp value instead of the text? That
I didn't think the absolute path was necessary either. However, I kept
getting a VI not in memory error. Most likely, I wasn't waiting long
enough for the application to fully launch. I was hoping that as soon
as the Open Application reference function was successful, the Open VI
reference
1) If I send the command including curly braces I get response invalid
command so that is not the right way
2) I tried sending just string and that did not work
3) 4) and 5) I am not exactly clear how would I send the command in
this form. Can you use {02H} example and explain what you mean.
The
thank u very much.
Unfortunately, the VI can't run because an error occurs. Joes Append
Control Images to Report vi is missing.
I shall try to understand your example from the block diagram, even if
it doesn't work
Yes this will work fine. Please add a flyback diode to your solenoid
current. That is a diode to flow current from the negative terminal
to the positive when you cut current to the solenoid. The back EMF
spike can be quite high when the coil field collapses.
Monsieur,
Aussi, vous avez la possibilite de modifier le curseur de souris en LV
en appelant directement les fonctions du SDK (Microsoft) dans LabVIEW.
Veuillez trouver un lien ci-dessous vous expliquant la demarche =E0
suivre:
Hello!
The latest version of LabVIEW for HP-UX is LabVIEW version 6.0.2.
Thanks for contacting us!
Regards,
Colin C.
Applications Engineering
Title: Expression node and numeric units
Yesterday I went to a talk regarding software development with quality assurance for dimensional consistency. The talk was aimed at developers using Fortran to create predictive model of physical processes. This prompted me to review how LabVIEW
I have an interface (main vi) wich call another interface (pop
up).this interface call another interface. How can I do in order to
close the interface which is calling without stopping my application
I have an interface (main vi) wich call another interface (pop
up).this interface call another
Hi all,
System - Windows NT4.0, LabView 7.0, PCI-DIO-96 card.
Info -
I am using the DIO single read/write.vi to update ports on a custom
board. The Labview code has an outer For Loop that executes 64 times
(to update the ports 64 times). Inside the loop is a sequence
structure. The first
Hi Scotty,
Please take a look at the responses posted to your question at the
location below:
a
href=http://exchange.ni.com/servlet/Redirect?id=11097202;collating
sequence error???/a
Sincerely,
Feroz
Hello Kelly!
Essentially, it sounds like you are wondering how accurate the wait
functions in LabVIEW are. The timing accuracy of a Windows-based
computer is typically 1ms, so at first glance the answer to your
question is approximately +/- 1ms. There are several things that can
affect the
Unfortunately, I do not know enough about how to filter this noise out
in software. Using shielding may be the best way to go. However, one
last suggestion is using a reference signal, however, this will
require knowing the frequency of what we are trying to measure.
Check out the a
Hi Scotty,
Please take a look at the responses posted to your question at the
location below:
a
href=http://exchange.ni.com/servlet/Redirect?id=11097202;collating
sequence error???/a
Sincerely,
Feroz
Hi Scotty,
We need some more information from you:
1) What SQL query are you trying to execute?
2) What operating system are you using?
3) What version of Access do you have?
The database connectivity toolkit is ADO Based. Try creating a UDL
for the database and feed the path to the UDL to the
Using LabView server , is it possible to use the multicast protocol to
send VIs to clients using Run Time Engine?
I need to know if it is possible to configure Labview web server to
send remote control information with multicast protocol
Hello!
Take a look at the following document:
a
href=http://digital.ni.com/public.nsf/websearch/78171449AECA0EB286256CE5005205A0?OpenDocument;Receiving
Exception Error in Call Library Node/a
This should fix the problem.
Sylvia Vences
Applications Engineer
National Instruments
Thank you Altenbach.
Can I ask you to save
this in a 6.1 version?
I don't have version 7.0.
Thank you,
Van
how do i prevent the default 0(in the case structure for example) from
passing forward? (i.e. don't wanna see 0s in my output files)
This article might help:
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/68f14e8e26
b3d101862569350069e0b9?OpenDocument
uscmagz [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
I set up an FFT Power Spectrum and someone told me I may need to do
anti-aliasing for some
If your signal has frequency components that are higher than the
Nyquest frequency (half your sampling rate), they will show up as
alias frequencies that are lower. This can cause false results.
Your analog signal must be filtered such that only frequencyies
suitable for your sampling rate are
--6371056.1085161087048.JavaMail.quiq.tekken
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
For your reference, here's an image of the code (since you don't have
LabVIEW 7.0).
--6371056.1085161087048.JavaMail.quiq.tekken
Content-Type: image/gif; name=pack10.gif
Thank you Altenbach.
You're a life saver.
Van
I only know of being able to program the NI FPGA PXI card with LabVIEW. I
haven't heard anything about DSP's. Here's the link to the FPGA card:
http://sine.ni.com/apps/we/nioc.vp?cid=13713lang=US
and one on LabVIEW real-time development and deployment:
http://www.ni.com/realtime/
Matt Moose
That was a perfect solution! Thanks!
Today is my last day as an intern with this
company, and I wanted to thank everyone who has made suggestions and helped me with
LabVIEW. Hopefully, you wont see me again as Im not really
interested in continuing down this more software oriented EE
When I built executables with G Web Server, sometimes, the list of
active connections start to grow and whole system seems to stop
responding for CGI calls.
Does anybody know what could be the reason.
Thanks in advance
Pawel
Thanks very much Altenbach.
Van
cn_tower;
You need to provide more information. Better if you can provide the
code for review.
You can always delete a case from the case structure. Right-click on
the case and select Delete case.
Regards;
Enrique
The Get Date/Time in Seconds function returns a time stamp control that
appears to contain the local date and time. Is there a way to convert this
to UTC without doing a bunch of crazy tail math / logic? I mean, to do it
correctly required a lot of thinking to account for daylight savings,
how can I pass a null into an array?
Hi Rolf,
I managed to make it work. I came to a decision to switch the control
display to hex and then I typed the command in without H as a suffix
and now I am reading values properly but in hex format. I posted new
question asking how to convert this format into decimal format which
is more
I replaced the visa32 dll, but the error is worse, the program doesn't
run at all. When I clicked on it, it immediately said error and the
only option was to close it.
brDrop a numeric control on the panel and type NaN in it. NaN is
the Not-a-Number. On the diagram, drop a numeric constant, change its
representation to Double (DBL) and type in NaN.
For strings there's an empty string constant in the palette.
Hope this helps,
Khalid
br
Thank you Rolf.
Van
...
I am retrieving a large amount of data (multiple sheets) from an excel
file and would like to extract the entire range without retrieving
individual cell values(too slow). I can write an range all at once
but cannot read it.
Do we have any details for SPDIF ? NI came up with
many fast DIO boards this year with superb software Waveform editors.
Is it possible to put concept sample on the web if the SPDIF
commuunication can be done.
I have been asked by yamaha.
Hello All:
At the moment, I evaluating if LabVIEW is the best tool suitable for my next
task.
I would like to know if LabVIEW is an in-process COM server—an ActiveX
DLL—that implements the IDTExtensibility2 interface. I am trying to add a
COM add-in for a current Microsoft product.
The
Hello!
To use your Audiophile 2496 sound card with LabVIEW the first thing
you are going to need is a driver from the manufacturer. Most
manufacturers already have a driver that works with LabVIEW or at
least a driver written in C that then you can call from LabVIEW using
Call Library Function
Thanks guys for your feedback... I got a lot of replies that suggest ways I
can manipulate the seconds counter in labview to get what i want, which
will do the trick. It is not terribly complicated to adjust the seconds in
the timestamp control (even accounting for daylight savings, if
rberger wrote:
I would like to know if LabVIEW is an in-process COM server#8212;an
ActiveX DLL#8212;that implements the IDTExtensibility2 interface. I
am trying to add a COM add-in for a current Microsoft product.
LabVIEW is not an in-process COM server. LabVIEW is started as a
separate
Pop-up on the ring control and look at the Representation. You'll
notice that in some versions of LabVIEW it's an I16 and in others it's
a U16. You can change the representation to an I16 and then -1 is a
valid number for the ring (instead of just a wrap-around).
And, no, I don't know why they
After looking at the Bode Plot Wizard.vi, I don't believe there is a
limit to the frequency range. The frequency range input has the
(0.001 to 100) string here simply to indicate that this is the default
setting for the frequency range input used for the bode plot
calculation. Please refer to
I want to allow the user to interactively select a folder for data
logging, but he shouldn't be allowed to delete any existing data
files. The path control doesn't have any options to prevent this as I
see it.
As a possible alternative, I recall seeing a very simple
directory-only selection
Hi,
Oops! This post seems to have been accidentally posted twice. Please
reference the answer in the other post found a
href=http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101RPAGEID=135HOID=5065000800E1D5UCATEGORY_0=_49_%24_6_UCATEGORY_S=0;here/a.
Thanks!
Kileen C.
The Windoze technical info states that they do not guarantee timing
better than 100ms with the system clock. You're right, that generally
it's much better than that, but I have seen pauses in my VIs that vary
up to 25ms (using a take time before the loop and then check time
after the loop). My old
Curious, I don't remember seeing this. Could it be you are
inadvertently hammering the CPU?
What is the VI priority setting? (If you e.g. force time-critical,
unimportant things will get delayed). Leave it at normal.
Is you code clean, with proper waits inserted or is it just spinning
ball/b
It works just fine here. Your VI does not have any default values set,
what kind of inputs do you use for testing?
Could you tell us in a bit more detail what kind of wrong results you
get?
(My test example: [1,2]*[1,2]=[1,4,4] as expected).
Thanks, we're close but not quite there.
Even without selecting 'all files', the user can still see and delete
entire folders!
-Dave
Use the File dialog from the advanced File IO palette.
-- Select Existing dir for the mode
-- Wire a single space character to the pattern (for example).
-- I assume the file name will be programmatically generated.
-- The file dialog will only show folders, because the file pattern
never
I've developed a system for automating processing of in-situ vacuum
pumps in infrared detector dewars. The systems have been in use for
several years and I'm in the middle of an upgrade and I was wondering
if I can link the systems together to increase my process throughput.
Each system is in a
I'm really looking for information about someone who may have already
written a program to do what MRI or NMR does. I hate to reinvent the
wheel.
The Gary Johnson book is helpfull, though
Tony Hill
I have an MKS mass flow controller capable of sending flow rate
between 0-20 lpm.I have National Instruments labview and use National
Instruments field point explorer to control voltage input to the mass
flow controller. I also have omega RH sensors capable of sending RH
readings in volts, which I
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