> Subject: RE: [W] VI Server vs. System Exec.
> From: "Junginger, Johann" <[EMAIL PROTECTED]>
> Date: Wed, 4 Feb 2004 18:15:34 -0500
>
> >As I understand it a version of LabVIEW can always(?) open a VI written
> >with an earlier LV version but the converse is not true.
>
> That is only true for
Hello
Has anyone had any experience querying Active Directory on Windows Server
2000 or 2003 from LabVIEW?
I know are ways to access it with ADO objects or with .NET, which I am
experimenting with, but so far I am not having much success. Any tips are
appreciated.
Thanks,
Jeffrey
-
I'm looking into buying the Agilent 3499A switching mainframe and
using some matrix/multiplexing modules (N2260A and N2262A).
I found the Labview driver for the mainframe but nothing for the
modules.
Does the mainframe driver contain the functionality of all the
modules? If not, does anyone know
Problem with Call Library Function. Want to pass a string and return
a string, but my compiler does not recognize "CStr" and Labview does
not recognize my "char *function()" callout
Hi, I'm trying to use a .DLL I wrote in Visual C++ .NET. The Call
Library Function generates a function prototype
Hello again...
Back to looking at this problem. Have still been unable to get LabVIEW
to create a blank data buffer, pass this buffer address to the DLL and
then have the DLL return data from the hardware to this buffer
address. I have however been able to read data (two chars) at a time
from the
You are welcome.
Look under String palette, then under Byte/Array/String sub palette.
According to the Eagle web site, there are "plug-in compatible" VIs
installed. These new VIs would have to be used instead of the normal
daq functions. Just for grins, I ran the install program from Eagle
and it put them in the vi.lib folder. It did not automatically update
any of the palettes (in
Hello Gehill,
Thank you for contacting National Instruments.
Am I correct in assuming that you are trying to print from the activeX
object? If so, you might want to contact the developer of your object
to find out if you can and how to print.
In answer to your last two questions; no, National I
I originally had that problem occur all the time. I also run LV7 on
XP-Pro.
I re-installed LV7 on a new PC and it works fine. I was having many
other problems with LV7 on the previous PC (Dell), which motivated me
to re-install it on another machine (Clone).
Did you try re-installing both LV & W
I think that you may be running into a bug with the xy graph. I have
not been able to isolate the problem. There is a solution however. I
found that if you set the cursor to be free and not snap to point,
your code works fine. (right click on the graph >> visible items >>
cursor legend. Click
If you want to build an application of your code then yes, you will
need to save the files to a file. If not you can save the values in
the VI file itself - just use an invoke node on the VI and use the
make current values default method and save instrument method.
For built applications you can m
You need Labview 7.
1) using dynamic event
or
2) using value (signal) as an event condition. any changes to the
value will signal the event
-Joe
I have an executable file that drives hardware. This executable takes
command line arguments and runs from a shell prompt under
windows2000/XP. The executable issues IO commands to the parallel port
address to configure the hardware. The IO addressing is implemented
correctly in 2000/XP using the P
Has anyone had any problems copying VIs on a network from one machine to another in
Windows 2k? I have rebooted both machines and keep getting this irritating message
from windows that it cannot copy the VI because the VI is already in use. Why, oh
why, is this happening? The permissions look
Can an application written with LabVIEW 7.0 utilize the real-time
functions in Window 2000 Real-time.
Sudhir,
That quote does state that the strict type controls and indicators on
the front panel will update in value and appearance. However, the
change will not affect the constants on the block diagram.
I am still investigating the second issue about rings with the
sequential values.
Zvezdana S.
Na
There must be an element in the list for it to be possible to
highlight the first line, but it does not need to contain visible
characters...
That means that if you write a space on row one and highlight it and
set that as the default value of the control you are there...
Dave,
If I understand your question you just want the LabVIEW search pop-up
to stay up longer. That way the user can see what is being searched
for.
One suggestion I have is to add c:\ as the first directory for LabVIEW
to search through. You can do this by selecting Tools >> Options >>
Paths >
Serial transmission (COM port) protocol requires sending a group of
bits at one time. You cannot just send one bit. Standard COM port
settings must be either 7 or 8 data bits, 1 or 2 stop bits, etc...
You have to group your bits 7 or 8 at a time. You could probably send
a 0 byte or a 1 byte. Th
Before I forget to ask, will you just be reading back individual
values, or will you get several values for any probes? I.e., will you
ever get something like this...
!Temp1987654321EndOfData
(where "98" is the first point of 16-bits, "76" the next, etc.) or
will it always just be a single point
Hello dhuff,
Thank you for contacting National Instruments.
I haven't been able to find any VIs built that take LabVIEW data and
convert it to nCode, but it can be done. You would need to know
details of the way the data is stored in .dac files including endian
order, whether it's channel orient
Hello Sean,
I'm running LabVIEW 7 Express and the Front Panel works OK on Windows
XP with Internet Explorer and RTE 7.0 for Windows.
The problem appears only in LINUX. There is no other RTE for LINUX
which I can try. Maybe the problems is with my distribution, or
mozilla version ...
Could you se
At 15:43 + 02/05/2004, Nuno Lambuça wrote:
>I know that the serial data in a parallel port is a loss of 7 databits, but
>it was the cost :(
Yikes. You really wanted to try to send serial data using one signal on a parallel
port? I doubt that could be reliable at almost any baud rate! For a
I'm sorry Brian, but the "rate this answer" doesn't show on your
latest reply?
As for the query thing, you're right, it doesn't make sense to be able
to do both I guess. So either I'll have the computer request each data
by sending "?Temp1" requests and listen for the replies, or else I
will h
Mads.
What do you mean by type-cast it
to a string?
Thanks,
Van
Hello Ondra,
Thank you for contacting National Instruments.
What version of LabVIEW are you running? To use the Run Time Engine
(RTE) 7.0, you must be running LabVIEW 7.0.
If you are running 6.1 or earlier, you must install the corresponding
RTE. To view LabVIEW 6.1 front panels in Mozilla, fu
I'm trying to write bits through the serial port COM1.
Labview "Write VI" only writes everything in string. It seems. How
can I write bit by bit through COM1?
Thank you,
Van
I don't have any 100% accurate values at this time since we have not
desgined the sample system yet. However, going with what I have to
estimate one:
Assuming data is transferred in binary format (header and footer in
ASCII)
10 data sources, each is app. 10-13 bit long, round up for worst case
= 13
There is some sample LabVIEW code for the Sensotec 2000 at:
http://www.sensotec.com/advantage/download.asp#software
If you can't find the instrument driver you are looking for on the
Instrument Driver Network (ni.com/idnet), you can generally search
google and find something.
1
In my application I obtain 1 set of values by pressing a button.
Another portion of the program uses these values to perform an action.
Now if I stop the program and rerun it then these values become
default values.But I want to use the last saved values each time I run
the vi. How can i do this?.
Hi Sumitrishi,
When a VI is made reentrant, this property does not affect any of the
subVIs and does not make seperate copies of the subVI. In other
words, it does not make the subVIs of the reentrant VIs reentrant.
There are many reasons for this, some of which are
Not all VIs can be safely con
Hi Gerald,
Since Linux and Windows are quite different, there are some
differences in the LabVIEW versions for these Operating Systems.
Below are a few:
No ActiveX in Linux
http://digital.ni.com/public.nsf/websearch/DA11427DB450FDCB86256257005717D0?OpenDocument";>Using
National Instruments Hard
I would like my stand-alone application, built with LV 6.1 builder,
not to start running upon clicking on it. In otherwords, I just want
it to open up the front panel and wait for the user to click on the
run button before actually start running. Although I have NOT selected
'RUN on OPEN' in the VI
Hi Sheela,
That's probably a "wrong" setting in the application builder.
1. Start the application builder.
2. Include your top level VI
3. Go to the "VI Settings" Tab and click on your top level VI.
4. Check the "Run when Opened" setting of your top level VI. It's
probably set to "YES"
5. Click on
Hello Wytech,
Thank you for contacting National Instruments.
Make sure you do have administrator rights by trying to copy and paste
to the folder in which you are trying to install RTE.
Also make sure that you have permission to write to the specific
folder if it is on a network.
Let me know if
A set of VI's for this sort of thing are available from my website:
http://www.mooregoodideas.com/Downloads/Downloads.htm#DateTimeTools.
Enjoy,
--David Moore
At 11:30 PM 2004-02-04 -0500, you wrote:
Subject: RE: Time Zone
From: "Daniel A. Gilmore" <[EMAIL PROTECTED]>
Date: Wed, 4 Feb 2004 15:47:15
Regarding the serial issue...
Are you using VISA or the "builtin" serial VIs? Are you using
hardware flow control?
If you aren't using flow control, then it's very likely that the
serial port isn't being serviced fast enough and bytes are being lost
because of this.
I think the "builtin" VIs (o
I've written a little routine that measures voltage from a
potentiostat that has 2 outputs from it:
1. Output with Gain control
2. Output without Gain control
My routine measures the voltage (current) until the current reaches a
specific value then performs an output to the potentiostat. Now the
At 18:05 -0500 01/07/2004, Daniel Flatin wrote:
>>David Thomson wrote:
>>A colleague of mine wants to write data from LabVIEW into files of Igor waves to
>>analyze in Igor. I told him that I could find such conversion VI's, as I had used
>>them years ago.
>
>You could also do this with AppleScrip
At 12:05 + 02/05/2004, Nuno Lambuça wrote:
>Hi, in LV7 I need a timers smaller than 1ms. My need is for implementing a
>serial protocol. Using the parallel port I get a too fast dataflow, so I
>need delays.
Nuno,
You can't do this using a normal desktop O/S. Period.
You can't use the parallel
> Here's my problem. DLL looked always magic to me, so I tried to work
> with them to see how it works. I wrote a DLL in Labwindow/CVI 6.0 and
> my first fonction had the following prototype
>
> extern int __cdecl MyDLL_Init (int In1,char *Out2);
>
...
> extern int __cdecl MyDLL_Init (int In
I'm still on LV 6.1 so I can't read your vi. I would be happy to take
a look at it if you would repost it in 6.1 format.
Ditto Mads statements.
"Syncronous TCP/IP" over ethernet (or any other CDMA network) is an
oxymoron.
Ben
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=261&HRedirected=True&HUserId=101_3529&RFORMNUMBER=6";>Ben
Rayner
http://volt.ni.com/niwc/common.jsp?page=products_certificat
Hi Boeing!
This could be simple or hard.
Simple:
Is the printer configured to "print in background"?
Hard:
The combination of software and hardware you are using is exhausting
some resource (i.e. memory, CPU, etc).
Suggestions:
A) Check printer config.
B) Watch "Task Manager>>>Perfromance" to
> I think using a history buffer and have one graph will be to slow. The
> satellite will be active for 6 - 8 hours, and towards the end of that
> time, I think (I don't know) that the time it would take to read in
> the buffer and then display the data would be significant, taking away
> resources
I modified multi-selection dialogbox.vi and now i have an array of
strings that has paths of the selected files.
How can i read these files one at time and make some calculation out
of them and after that create graph from the answers. Some kind of
loop perhaps?
Balle
You will get the best possible results using the regression fit routines if
you adjust your input data arrays so that they contain numbers that are
"small". These routines suffer from numeric errors internally when
processing large numbers, like timestamps.
I do this to the data before passing it
"First you have to go through NI-488.2 getting wizard from the
National instruments start menu
verify your hardware and software installations procedures and go
through Measurement & Automation Explorer(MAX) and try to set the
address 1 in the instrument as well as MAX, communicate with the
instrum
"First you have to go through NI-488.2 getting wizard from the
National instruments start menu
verify your hardware and software installations procedures and go
through Measurement & Automation Explorer(MAX) and try to set the
address 1 in the instrument as well as MAX, communicate with the
instrum
Hi Nok,
The standard OR function in the boolean sub palette of the functions
palette performs a bitwise operation on it's input data. This is a
polymorphic function so you can input scalar booleans, arrays of
booleans or numerics.
Hope this helps,
Nick
First you have to go through NI-488.2 getting wizard from the National
instruments start menu
verify your hardware and software installations procedures and go
through Measurement & Automation Explorer(MAX) and try to set the
address 1 in the instrument as well as MAX, communicate with the
instrume
Hello,
I'm making a save file ( TXT ) that could be accessed by other
programs! Now when i try to test it with Excell but I always get the
file permission error 8 in Labview!
Could this be a problem, or is the file accessible in other programs.
But not in Excell because it has it opened all the t
Hello.. everyone,
I need to make the bitwise operation (or) in Labview, but I can't find
it somewhere!!!
Anybody has the experiece about it, pls help me !!
Thanks a lot
Hi Steve,
I don't know of a LabVIEW instrument driver for this sig gen but
there is a Labwindows/CVI driver on Aeroflex's web site here:-
http://www.aeroflex.com/products/software.cfm?ProductName=2023A/B,%202025
You could download it and then in LabVIEW under the tools menu you
can import th
"Jack Hamilton" <[EMAIL PROTECTED]>
>Thanks for the IMAQ examples. What I am finding is that if you drag the
>property node into another blank VI then drag the reference to the blank VI
>front panel problems occur:
>1. The reference does not show as an IMAQ reference but a odd looking thing
I am looking for a Labview IFR 2023 instrument driver
Thank you very much! This solution indeed helps! Any idea why I am
only having this problem in LV7 and not in LV6.1?
Regards,
Ruud
Subject: RE: [W] VI Server vs. System Exec.
From: "Junginger, Johann" <[EMAIL PROTECTED]>
Date: Wed, 4 Feb 2004 18:15:34 -0500
>As I understand it a version of LabVIEW can always(?) open a VI written with
>an earlier LV version but the converse is not true.
That is only true for the developmen
"Jean-Pierre Drolet" <[EMAIL PROTECTED]>
> "Daniel A. Gilmore" <[EMAIL PROTECTED]>
>
>> ...and if I do not have the internet toolkit?
>
>Get the timestamp for LabVIEW epoch (0 = Jan 1st,1903 GMT) and get the hour. The
>difference from midnight is your Time Zone offset.
This works not flawlessly a
"Daniel A. Gilmore" <[EMAIL PROTECTED]>
>I need to save absolute time stamps to an Excel compatible CSV file and need
>the time zone adjustment from Universal Time to do this since the LV time
>stamp is in Universal Time. Is there a way in LV to get this info.
Only LabVIEW's internal int32/times
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