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!!
In the VI Properties, execution options, there is a checkbox "Clear
indicator when called". That clears graph when the VI is called or
when a top level VI is run. If your subVI is set to open FP when
called, that will do what you want. If you open the panel using VI
Server, you may also use the VI
I wish to control relative humidity of air by controlling the flow of
dry air which is mixed with a fixed flow of high humidity air. I wish
to make this application using labview which would read the current
relative humidity of air, compare it with my required humidity, and
send command to mass fl
For resetting graphs and Charts, you should look at the example that
ship with LV. Simply type "Clear graph and chart" in the find example
feature. For the rest control and indicator, you can do as mention
above.
> For some reason in the VI I've been building the "Log at completion"
> option on the operations menu is ghosted (meaning its not clickable) I
> was greatly hoping to use that feature so does anyone know what might
> have caused it to become ghosted and how I can correct this problem?
My suggesti
> Here i want to add something. If i connect a integer to float terminal
> LabVIEW allocates the memory twice a times unless if i do a proper
> conversion. As per your s/n it should not allocate a memory for array
> conversion too. Pls Let me know if it is wrong.
Assuming you are asking, the answe
hi guys... i am trying to execute an SQL query on a database created
from another system. I open a connection to the dsn of the database
and use db tools execute query vi. i get the following error right
after this vi.
Possible reason(s):
Exception occured in Microsoft OLE DB Provider for ODBC Dr
hi guys... i am trying to execute an SQL query on a database created
from another system. I open a connection to the dsn of the database
and use db tools execute query vi. i get the following error right
after this vi.
Possible reason(s):
Exception occured in Microsoft OLE DB Provider for ODBC Dr
hi guys... i am trying to execute an SQL query on a database created
from another system. I open a connection to the dsn of the database
and use db tools execute query vi. i get the following error right
after this vi.
Possible reason(s):
Exception occured in Microsoft OLE DB Provider for ODBC Dr
If I have an array of 1s and 0s, how can I pack them
into an array of bytes (8 bits)?
Thanks.
DanWH;
The easy way is to use a help editor software. With LabVIEW, you can
create the files that you will use in the help editor by selecting
"Print..." from the File menu. At some point you will have the option
of selecting the destination of the file. Select "RTF File" or "HTML
File" depending
Hello,
Thank you for contacting National Instruments.
Your feeling is exactly correct. By default, the LabVIEW 5.1
installer will install an older version of the NI-DAQ driver software.
More than likely, the older driver has been installed over the new
driver and has corrupted it.
Here are st
Hello Astroboy,
Thank you for contacting National Instruments.
It appears that there is an issue with Advantech's AIVoltageIn.vi. If
you are supposed to be measuring a 5V signal, and this VI is returning
the number 0.09V then there is definitely a problem with either your
DAS card or the driver
"Scott Hannahs" <[EMAIL PROTECTED]> wrote:
>At 7:58 -0500 5/19/04, [EMAIL PROTECTED] wrote:
>>If the task acquires a finite number of samples and you set this input to
>> -1, the VI waits for the task to acquire all requested samples, then reads
>> those samples.
>
>Is this a blocking wait like t
I have a VI that switches between two voltage states and resides in
one state or another according to a wait function. I need this
switching to be extremely precise. For example, if I want the first
voltage state to be held for 200ms, it MUST be as close to that as
possible. How can I figure out
I've just managed to do this and I'd like to share it!
First you need to get a second Y axis on the graph at all. Drop an XY graph
onto the FP. Right Cllick on the Y axis "Amplitude" in the default case and
choose Duplicate Scale. This draws a second Y scale "Amplitude 2 " beside
the first one.
R
Actually, if you hardwire a seed value that is >0, it will
not initialize and will always return the exact same sequence.
Automatic re-seeding only happens if seed is zero, negative, or
"unwired".
Hallo I am student, I want to ask about Bode plots example "Bode plot
wizard.vi" why I can't draw a response on frequency more than 100 Hz?
Vidas
--1810904.1085090899188.JavaMail.quiq.tekken
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Opena VI reference to the current VI and invoke "Reinitialize all to
Defaults". Voila!
(see attached code image. Just put it inside an event or case,
triggered by your reset but
Hallo I am student, I want to ask about Bode plots example "Bode plot
wizard.vi" why I can't draw a response on frequency more than 100 Hz?
Bernd,
With the 1394 cameras the trigger is passed directly to the camera.
So the camera itself it taking the trigger and taking the image then.
You can set attributes of your camera. So if your camera supports a
delay of the trigger on the camera itself then I would try that way.
You can obtain a
Sorry, I have limited experience with solenoids and SSRs. Could you
please provide a little more detail? My understanding so far is that I
would use a digital output on my DAQ to control the switching of a SSR
which in turn would be rigged up to a voltage source to control the
solenoid. In terms of
Hello,
I'm not sure I understand your question. The best thing to do would
be to check out the LabVIEW examples on doing this. Search for
spreadsheet in the example finder and there are quite a few examples.
If they don't answer your question then please try to be more
specific.
Regards,
Ryan K
I included the sub-VI dynamically when I built the executable program.
All the other VI's that were included work.
You
may have tried this, but it may be that you're encoder is backwards. If
the encoder is backwards, it will run away. You can either turn the
encoder around or you can set the direction in MAX under the Encoder
Settings. It could also be your PID tuning. Try setting the Integral
and D
I'm assuming you are using an NI-73XX motion control card. If you are using the 733x
or 734x, you should be able to use the modulo function. If you are using the 735x
card, you should be able to buffer many breakpoints into the onboard buffer. See
pages 187-192 of the NI-Motion User manual.
the easiesrt way to do that ids to use the report VI's built into
labview and use the append front panel image to report VI. I have an
example but am not able to get to them right now to show you how it is
done.
I will get back to you and show you how.
Rajiv,
CIN tools, which includes extcode.h, is not included in the base
flavor of LabVIEW. If you have the Full or Professional version you
should have the folder.
I imagine that you have the base version.
Evan
Mike,
Currently an example does not exist that does this in NI-DAQmx.
However, you could certainly build a VI that does something very
similar to the Virtual_Channel_Info_Grabber.vi in NI-DAQmx using the
DAQmx System Property Node and the DAQmx Channel Property Node.
Ames
Applications Engineering
Drew33,
National Instruments offers many different signal conditioning options
(SSR Series, SCXI, SCC...) that work very well with the
PCI-MIO-16xe-10 to control a solenoid valve. I recommend you contact
our internal sales department at 1-800-433-3488. They specialize in
specifying systems and w
Shared libraries on Linux are designed to be forward-compatible. In
otherwords, newer versions of system libraries generally do not break
executables built with older versions of those libraries.
Unfortunately, the converse is not true: executables built against
newer libraries will not work when
thx u for your info, this is what I found if I run labview with
command prompt:
[EMAIL PROTECTED] lv61]$ labview
LabVIEW caught fatal signal
6.1 - Received SIGSEGV
Reason: address not mapped to object
Attempt to reference address: 0x0
Segmentation fault
[EMAIL PROTECTED] lv61]$
The LV6.1 screen
I would like that graphs and indicators will be resetted when the VI
is open. Is it possible? A control to push at the end of the previous
session could be good, too.
Hi Cyle,
Please take a look at the document below. It explains why the events
are not being fired.
http://digital.ni.com/public.nsf/websearch/024828947672E68586256ADB0071FB1B?OpenDocument";>Event
Structure Does Not Capture the Value Changed Event for Indicator Wired
to Iteration Terminal
I hope
Does anyone know the highest version of labview that
was released for HPUX operating system ?
The invoke nodes are just calling methods which are exposed by the
Excel ActiveX interface, and thus there's not going to be specific
LabVIEW help on them. I find the following MSDN link helpful when I'm
programming Excel via ActiveX:
http://msdn.microsoft.com/library/default.asp?url=/library/en-u
Dear Oleg,
your answer helped me very much.
My question is: how can I optimize the write to file operation, that
is I need something to control file destination name in order to avoid
that puictures are overwritten when I press again the enable button. I
am asking something similar to what is pres
Marco,
Seems to me that Rolf articulated the difficulties quite succinctly. It
is generally far easier to build an "all-LabVIEW" solution than to
implement some complex inter-application communication scheme.
Based on your posting, it sounds like you are simply wishing to play
back a video usin
Hi all,
Thank you for your responses. As replied by you all, I
did not see much change between the two types of
communication and it worked immediately.
Thanks again,
Gokul
--- Rolf Kalbermatter <[EMAIL PROTECTED]>
wrote:
> "Gokul" <[EMAIL PROTECTED]> wrote:
>
> >I am trying to acquire data
I would like to create a Help screen, for a LabView program, that
looks like and uses the same format as the "Contents and Index" found
in the LabView Help menue. Are there any DLLs or created VI's that can
do this?
Just a guess, but... One of the biggest problems with building
executables is the path to other VIs. In the development environment,
an example path might be
C:\this path\my vi.vi
While in the executable, the path changes to:
C:\this path\executable.exe\my vi.vi
I'm sure you can see the problems th
For some reason in the VI I've been building the "Log at completion"
option on the operations menu is ghosted (meaning its not clickable) I
was greatly hoping to use that feature so does anyone know what might
have caused it to become ghosted and how I can correct this problem?
Thanks Kileen.
Derrell
At 10:03 -0400 5/20/04, Dan Press wrote:
>Printing takes time, and it wants to run in the UI thread.
>Now go upgrade to LabVIEW 7.1 and XP Pro. 1999 called; they want their
>software back. :)
Then upgrade to a true multi-threaded system. You know the one, that one based on a
multi-threaded, sy
I get the following error when I tried to run my program on a computer
with an installed LabView runtime engine:
"tktds7kReset.viDriverStatus:(Hex 0xBFFF015)Timeout expired
before operation completed". After I pressed the run button for a
half a dozen times, the program would run for about 20 min
Scott,
It looks like I was probably wrong in my earlier message. I did a quick
test of the situation where I thought LV2 globals could improve on queues,
but the LV2 globals were actually worse than the queues. The test pushed
1000 arrays of 1000 random numbers each through the queue or global, and
Printing takes time, and it wants to run in the UI thread. Perhaps one
of the Win-API wireheads out here has a way to invoke background
printing, but I found a way to do it in pure G.
I create a separate application; let's call it the "YYY_Project Print
Service.exe". The application's job is jus
Thanks Greg.
Here i want to add something. If i connect a integer to float terminal
LabVIEW allocates the memory twice a times unless if i do a proper
conversion. As per your s/n it should not allocate a memory for array
conversion too. Pls Let me know if it is wrong.
Here at the Spallation Neutron Source (Oak Ridge National Laboratory in
Tennessee) we have an opening for a EE with LabVIEW experience.
If you are interested, look at http://www.sns.gov/jobs/6267.htm and
respond quickly to the SNS HR.
Thanks, Willem Blokland
It may be that even these subVIs might not do quite the trick
depending on what you want. If you want to get exactly the same random
number (or array) from the Gaussian White Noise.vi for example, you
may need to edit the VI and create a personalized copy.
In the existing VI, the seed value that y
NI has one for the 3316. You can download it from http://search.ni.com/query.html?lk=1&col=alldocs&nh=500&rf=3&ql=&pw=595&qp=%2BContentType%3AInstrumentDriver+%2BIDNetManufacturer%3A%22Prodigit+Electronics+Co%22&qt=&layout=IDNet";>here.
I don't know the differences between your model and this one.
Hey Agorden,
You didn't mention how you are communicating to your instruments, but
I am assuming you are using GPIB or serial. If so, the first place to
check is with NI-SPY. This will let you know what is being
communicated in the back ground. You should be able to see with
NI-SPY whether or n
In win2K and higher, you can use the solution I posted http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500080053CF&USEARCHCONTEXT_CATEGORY_0=_49_%24_6_&USEARCHCONTEXT_CATEGORY_S=0&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0&UPostedFromTimeSearchArg_0=22&UPostedFro
You can't - that's the point of having a password protection. You
could always try traditional crack3r methods, like a brute force
script.
See:
http://digital.ni.com/public.nsf/websearch/BC99793C48857A41862565BC006F472C?OpenDocument
I have the same problem but the IT dept wont help! So... Looks like
you've had your chips!
> What LabVIEW does internally while coercion dots appears in block
> diagram?
The coercion dot indicates a datatype change is taking place. In some
cases, it takes little or no time. A coercion from an unsigned to a
signed integer is essentially free since the same amount of code will be
gen
Is there any means of changing the TCP/IP Settings on the local PC
programaticaly. This may involve reseting the NIC instead of reseting
the PC
They don't appear to have readilly available drivers for Labview for
the models DI-100 series.
They do offer instructions (and examples?) on how to write your own.
Check out the links below:
http://www.dataq.com/support/techinfo/starterkitextra.htm
http://www.dataq.com/support/upgrades/3rdparty/
Hi, The book of Gary W. Johnson on LabVIEW (mine is 2nd Ed) towards
the end of the book is practically physics in content and application
perhaps that could give you some insight as it was with my own
experience.
I'm trying to control the 3300C Prodigit Electronic Load but for that,
I need the driver. It's possible to download it?
I have a system with Labview 6.0 on NT-4 that prints a 1 page report. This
is done by selecting Automatically print panel every time vi completes
execution. This vi takes about 30 seconds to complete, probably due to a
slow connection to the network printer. If the Automaticaly print panel
chec
Thank you very much for the help! :)
Sammy
Can I install LV6.1 in Fedora Core 2?
Hi Matthias,
As per shawn, i m able to update the unit with prefix when you change
the number in the control by selecting SI Notation.
Thanx Shawn for updating my knowledge.
Nirmal
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