Hi all,
thank you all soo much for that overwhelming response. Can't answer all
responders individually!
There have been some very interesting hints among them - I'll check it out
soon.
As to the Ebay-posters: Have tried to get some interesting parts two or
three times but with no success.
Hi,
E. Blasberg wrote on Sun, 15 Feb 2004 12:52:11 +0200:
...
Well, they're expecting very large peaks on the order of microseconds
and they were afraid that too low a sampling rate would miss the true
peak.
Acquiring analog signals always inherits the risk of 'missing' the peak (in
the
Hi,
I'm looking for a software for snooping on serial
port for max os X.
Any Idea ?
Thank you.
__
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Hello Colin,
Though I hoped for an answer that showed me a way that did not make
necessary to relink the DLL each time I rebuild it, at least it is
good to know that I was not doing something wrong.
Thanks for your comment,
spj
I can't use the ActiveX of ICQ program may be someone can send me
examples for using this ActiveX.
Thank you.
Hi, I have read the remote panel from the NI development/labview. The
problem now i face is maybe i am too new to labview. I have create a
simple VI and also sign for a free web host under www.bravenet.com .
How can i create a remote panel(a html file) of my simple VI and load
it my homepage so
how to invoke the .exe files of other language same as vc++,vfp,ppt
in lv 6.1? who can tell me ,hope you can attech a example vi! thanks!
The easiest way of doing this is using web publishing tool. Check
the user manual for more detail. Also you can use VI server,
datasocket to accomplish this. You can find several example regarding
VI server and datasocket that ship with labview. Good Luck.
Hi all, I have created a VI that make use of GPIB to control some of
my lab equipment. The problem now i face is how can i set this VI as a
remote panel for internet. I have a free website under
www.bravenet.com . How can I do such a remote panel thing? thanks
how to invoke the .exe files of other language ( for example
vc++,vfp,ppt) in lv 6.1? who can tell me ,hope you can attech a
example vi! thanks!
If you don't have to treat an existing array, I would recommend uisng
out indexing here anyway. Its way faster than any array handling.
Santiago, much=EDsimas gracias por tu ayuda, es justo lo que necesitaba,
un saludo,
BEGO
Thank you very much, Chris.
May i ask u if there is anyway to disable the button first until
certain execution is executed, before releasing it to the user?
Im actually working on a project that manipulate data across gpib. If
the user press the button to early, certain data will not be received.
unfortunately I have only LV5 but I hope that anybody can help me
The Instrument I/O Assistant and its necessary files are installed by
the Driver CD - not the LabVIEW installer CD. Did you reinstall the
drivers from the Driver CD when you did the LabVIEW re-installation?
I would like to reproduce this issue you are seeing - It looks like
you installed LV 7.0
You probably can use the cursor property of the 3D surface graph.
Joe
The user manual is the best place to determine the specifications of
your board. The a href=http://www.ni.com;datasheet for the
PCI-6014/a says the maximum sampling rate is 200,000 samples /
second. Try searching the shipping examples for analog input
examples. I suggest trying Cont AcqGraph
All you really need to acquire the spark signal is a bunch of thin wire
wrapped around the spark lead. The pickups of a timing light are only
fancy so you can take them on an off with ease. The changing voltage in
the spark lead will be induced in the coil. You can read that with a DAQ
card and
The first thing that you need to do is to open the web publishing
tool. This is located under the tools menu. This will allow you to
create a html file of your vi. The one stipulation is that the html
file is placed in the LV directory named www. This will also allow
you to test the html file
I wrote this LV application using the Levenberg-Marquardt algorithm.
In LV6.1 it worked perfectly, but after converting it to a LV7
program, it runs much slower (maybe 10x slower)
Does someone know this problem (and a solution??)
David Ferster wrote:
...I must be a bad designer because I do just what you are saying is a
no-no, which is to leave a small amount of real estate blank. The
error indicators stay invisible until an error condition occurs, so
that the panel is not cluttered with indicators for rarely occurring
E. Blasberg wrote:
... they're expecting very large peaks on the order of microseconds
and they were afraid that too low a sampling rate would miss the true
peak.
An analog sample-and-hold can be configured to capture transient
peaks accurately and greatly reduce the load on the computer.
--
Greetings!
You can use any of the 3D display vi's to show your main 3d
data, and then use color to represent your fourth dimension. This can
be accessed via the property node. You will have to set thresholds
for each color you use, which is quite simple using the comparison
Dear germannubie,
what is NV 40/1CL ???
Pls enlighten a german-oldie
regards
wha
Thanks,
Nothing like have an example to explain an idea. Thanks for all the
help. Hope someday I can do the same for others.
Mike
This is a network setup issure and not related to labview. Please
post your questions to other newsgroup. However, I'll elabrate just a
little bit on this topic from my limited knowledge. Other people may
have better answers than mine.
Basically, the router restricts your access to the
Somehow I thought you might have some good advice Rolf. :) Since there are a
lot of functions I need to implement, I'll be looking for a simpler
alternative. (Either using another companies hardware or getting one of our
C++ programmers to write a DLL.)
You always seem to have the answers
this may be off topics.
Does anybody has a good test/check for cold soldering, visual
inspection is not good enough?
Any idea is appreciated.
I'm using plot multi-xy.vi to plot, and I use draw text at point.vi
to label my plot, not xy- graph.
Uwe,
You stated: allmost all
others use some of those last-second-bet-tools.
Can you elaborate on what you meant by this? Do you mean that the
sellers are using some sort of autoprogram to bid up the auction at the
last minute or that people like me are waiting to the last minute to bid
and
Hi;
May I ask the list:
1- Has anybody tried to integrate a Labview code with wonderware?
2- How is it possible to communicate with wonderware?
Basically, I want to have an application in Labview and the client wants the results of the
test to be shown in wonderware front panel. I don't know
Joe
if i do this, i think i need to manually enter the values, and there
are several thousand. It's not really practical. Perhaps i have missed
a way that it is possible; what did you have in mind?
thanks
Fraser
This won't work without changing the router settings, which I think
the school won't like doing.
I'd try to find a different way to do this if possible. Do you have
the possibility to upload to a shared directory somewhere in the
school, from which you can access outside the school?
Ask the
There are last-second bid services like
http://www.bidnapper.com/
They are called bid snipers.
JIM
Scott Serlin wrote:
Uwe,
You stated: allmost all
others use some of those last-second-bet-tools.
Can you elaborate on what you meant by this? Do you mean that the
sellers are using some sort
There are a few ways you can integrate Wonderware and LabVIEW:
1. OPC -- Wonderware supports OPC. You could either use LabVIEW-DSC which is both an
OPC Server and a Client. Or, use DataSocket to talk OPC.
2. DDE -- Wonderware originally used DDE for IO communication. They still
DLLs built with LabVIEW are not ActiveX/COM DLLs and, therefore, can not be
registered with the OS using regsvr32. From what I was able to Google on
the subject, you can't call standard DLLs from ASP. You will need to create
a COM wrapper around the standard DLL, and call the COM wrapper from
Hello Yurong,
Thank you for contacting National Instruments.
There is no known CPU usage problem when updating from LabVIEW 6.02 to
7.0. Try reading the following knowledge base concerning CPU usage.
http://digital.ni.com/public.nsf/websearch/8638139D6236D42086256A340073554A?OpenDocument
If
Additionally, we have the following Knowledge Base article on the
subject:
a
href=http://digital.ni.com/public.nsf/websearch/2CD034F223C650E9862569570041995C?OpenDocumen;Do
LabVIEW and LabVIEW Real-Time Support Modbus?/a
You might be able to sidestep doing any modbus programming by using an
The 3D Surface VI has a reference out, wire a property node to it
and select Cursors, wire a method mode to this Cursors reference,
and you should be able to add cursors with coords.
Joe
Hello mymandarin,
Thank you for contacting National Instruments.
Shan is correct. You can use property nodes to programmatically set
the values of your controls on the front panel. Those values can be
drawn from a file and wired into their respective property nodes.
By position of your
If you just want to see the updated frontpanel image, then it is much
easier because you can save it to an image and put the image (copy or
ftp) into your public html site at a regular interval. Of course, you
have to write a webpage to display the image and some other data.
If you want to
Hello Christoph,
I=92ve now managed to send the correct command to the ADC.. and the ADC
responses with 13B1#06 for example. But i still get the timeout errot
- the
I/O assistant doesnt seem to recognize the answer from the device.
How are you getting the 13B1#06 response from your device? If
During the conversion, were the L-M vi's converted to LV7 or fully
replaced? There appear to be a few changes between 6.1 7 LM vis...
several of the lower level subvi's go changed to CIN's, vs pure LV.
You may want to see if it's just LV 7 running slower (LV 7 uses more
resources than 6 in
If you aren't using virtual channels...
Using the original AcquireProc example program, you can set the gain
by putting values into the Input Limits. Labview will automatically
scale the results. So if your signal is 0-10V, put 0 as the minimum
limit, and 10 as the maximum limit. Typically,
hey thanks matthew and shan for your reply
~~By position of your controls, I am assuming you mean their values
(i.e. turning a knob), as opposed to actually moving its location on
the front panel.
yes you guessed it right.
how can i use the property node,is there any sample vi.
When the labview server is running, you can go to to the menu to
configure it, it should tell you what port is used. Or, Broswe in the
NI's program directory, there is also a configuration file that can
tell you which port it uses. For VI server port, you can check the
preference setting from
Hello C. Allen Weekley,
Thank you for contacting National Instruments.
Will you please elaborate on what you mean by RMS error calculation
for the time axis? Are you looking for the phase shift?
When you subtract two waveforms, you are calculating the difference
between two amplitudes at a
Hello mjoler,
Thank you for contacting National Instruments.
The following example will show you how to plot multiple 3D plots on a
single 3D graph. Modeling your VI after the example may also
alleviate the instability that you have been experiencing.
Perhaps this will help. I had a similar problem because my
configuration was incomplete. I had to Configure the Scc-2345
Accessory in the NI_DAQmx Devices. In Data Neighbourhood configure
your NI-DAQmx Global Channels then do your NI-DAQmx Tasks.
I believe that your tests only confirmed that
Try exchanging the two sets of properties (zoom and center x,y) -
property nodes execute from top to bottom. You will also want to make
sure that the error cluster is connected so that the property node
does not execute until the image has been acquired.
Hope this helps-
Julie S
Applications
hello Jeremy
am back as i said I would. I need some help because I got confused on
how I should implement this section of the code in labVIEW...
for count:=0 to 7 Do Begin{ do the bit value eading 7 times }
**value:=value SHL 1;{ value=2*value }
Port[LCR]:=64;
ok i need to use DDE to talk to myapp.exe, i need to send the app 2
peices of data and then retrieve the result.
i see stuff about server/client but i don't find anything really good
at explaining what each is/does.
i need an example that doesn't involve loading a file in addition to
executeing
Duplicate Link:
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101RPAGEID=137HOID=5065000500345A0100HTHREAD=88628UCATEGORY_0=_31_%24_12_UCATEGORY_S=0
Hi St Augustine,
This depends on the precision of your square wave and the frequency of
the square wave. If the frequency and precision is low, then you can
use the digital I/O on the board and control it directly through the
NI-DAQ driver.
If you require precision and high frequency, you can
Matthew,
thanks for your feedback.
Looking forward to the ActiveX equivalent of setting a Value
(Signaling) Property. Would be great if NI decides to provide this
event-driven power soon.
Regards.
Frans.
It sounds like you're not correctly updating the array of x values
that contain the time. Unless your acquisition time is not constant,
then it's usually easier to use a graph or chart for plotting
something versus time. It's pretty automatic then instead of having to
do some coding. Could you
I am using a TDS 210 and I am trying to read the signal from the
oscilloscope to labview. I tried using the Getting Started 2.vi
option, but this does not work. This vi just resets everything on the
TDS 210 and then takes data. All I want is to read the data on the
TDS 210 without doing
The DMM test is good, if you can wiggle or stress the connection while
measuring the resistance. It's always best to avoid cold solder
connections in the first place. Never never EVER blow on a solder
connection to cool it off faster. This is a surefire guarantee of a
cold connection. Also,
I tried to reproduce your problem but everything worked on my machine.
When you ran the Driver CD after installing LabVIEW - did you do a
typical install (which would install DAQ)? Or did you deselect DAQ
and only install Instrument Control pieces?
Sean,
Thank you for the reply. I should go back to my client to see if they
can give me a more specific definition, but the approach I thought of
was as you described, subtracting the difference in times at the same
amplitude. But, one problem is that there could be many places where
the
I receive some site but they can't work. Therefore, I was wondering is
there any good program or site that can use LabView with the webcam
that can publish it online. Thanks
Ron that was extemely useful information, however for this application
i am using digital inputs and reconstructing the waveform in labview.
i guess this would make the problem i am having more clear. can i vary
the sampling rate for digital inputs in measurements and explorer?
It's quite easy. You split the string you want to send into an array
of characters, and then using a for-loop write each character one at a
time, followed by a small wait (whatever your instrument requires).
Regards
Shane
Dear St Augustine,
a 6014 has not the abability to do HW timed digital input sampling.
The timing is always a SW timing and therefore its accuracy decreses
with increasing frequncy of the sampling rate. If you need exact
timing of the digital sampling you must use a 653x card.
You cannot set the
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