Hi Greg again
I hope you will rad this message, though it is written after some
time we have finished our converstion.
In previous post, you write that the polar plot will render my plot
depending on the device it is sending the plot to. You give an example
that if my device is a printer, the
Hi Happy Guy,
Could you tell us a few more details about what signals you want to
measure? Then it would be easier to help you.
Toni
You can copy C code from a web page and compile it because it's still
in text form and made up of individual characters that can be parsed.
A .gif or similar image file is simply one object - if you took a
screendump of a text editor containing C source code you'd have to
have a program that
it seems NI-CAN 1.6 had some problems...
With version 2.12, my program works
Hi Toni,
I don't know how your *.ini looks like, but it's not enough to only
insert the ini setting you mentioned.
I would try to copy the Labview.ini file from your PC and to adapt it
to your application. Please review the KB linked below for more
details (second method):
I wrote an application that does Levenberg Marquardt fitting on a
measured power spectrum (that should be a lorentzian). In LV6.1 this
application worked perfectly. Even if the initial guess coefficients
were very different from the actual coefficients, the algorithm would
find the right values.
what is the difference between wiring a datasocket reference or a
datasocket URL into Datasocket Read and Write VIs?
Which is better? To wire a URL or a reference into Datasocket
read/write?
Does wiring in the reference save processor effort/time? Do I have to
close the DS reference before I can
Hence, there vill be two copies of the same vi:s i parallel, one in
the dir and one in the llb. Is there a way of forcing LabVIEW to load
the vi:s from the dir:s, so that we can be sure to get the latest
versions?
When loading subVIs, LV first looks in memory, then in the location
Hi Somsak,
The first thing to do when installing a new peripheral device, such as
a GPIB card (including those from NI), is to register them using
Measurement Automation Explorer (MAX).
Steps:
1. Install the hardware as per manufacturer's recommendation. Also
install the sw driver.
2. Open
So, what is the best way to print a picture control in a high quality?
I think you are on the right track, but I believe there is a limit on
the Scale to Fit option in printing. It will only scale the image by
4x, to 288 dpi. For now, try making your picture something smaller,
like 280x10
One way is to build a waveform data type with Build Waveform function,
add t0 and dt info, and use the Export Waveforms to Spreadsheet
function. The dt, (delta time) should be readily available from the
sampling rate of your data acquisition. You could also create an array
of time values, append
That would work for me very well, but I need to ask you how make my
printer the device that polar plot will write to.
For now I can print my polar on screen and then print the front pannel
(good resolution), or save the picture to graphic file and print fron
report or etc (poor resolution).
Hello Greg
thank you for the answer. Can I ask you also to go back to our last
conversation and read my answer. Or better I enclose it here:
Hi Greg again
I hope you will rad this message, though it is written after some time
we have finished our converstion.
In previous post, you write that the
Dear Wireworkers,
I'm having a flaky problem with a motion system that I'm trying to
pinpoint, and I thought I'd ask if anyone has seen something similar.
I'm using 3 NI 7344 motion boards, UMI interfaces, and MOOG servo
controllers (don't know the model) that provide a synthetic AB
signal for my
Although many topics of simultaneous analog output and input can be
found in NI Developer Zone, I have not found a case similar to my
project. I'm trying to generate a 1kHz sine wave by using the analog
output of NI DAQPad-6070E, and acquire one channel input signal
simultaneously. I found most of
Hello Bill i was wondering if you still had a postion open.
Serial communication with a message-based instrument can be difficult
to get setup. You may have already tried this - but I would confirm
that your COM port settings correctly match the configuration of the
instrument. You can do a quick check by clicking the properties
button next to the
I used GPIB to control HP E4401B. I just want to know if there is any
driver for this analyzer?
RVI PFI,
It does not appear that any examples with this exact functionality are
available, but you should be able to use the bCont Generation -
ExtClk.vi/b example as the foundation of your application. The
master PXI-6713 will use the external clock signal as its update
clock. Additionally,
Need to be more specific; What is it that takes 600 ms with RS232 and
1200 ms with RS485?
Hi Ian,
There are a couple of ways I can think of.
The first is only useful if you know you don't have any multiple
entries in the array. You can get the value of the selected cell
(over the ArrElem.Value) property, and compare this with all of the
vlaues in your array.
The second method
Hi, Shane
The ArrElem.Xposition and Yposition method worked. I never thought
of doing it this way.
Thanks for your help.
Ian
Hi,
Please contact us at 1 800 433 3488 in order to get the conversion
kit.
Also read the following document that talks about the conversion kit
and how to get it:
a
href=http://digital.ni.com/public.nsf/websearch/429E45271CFD683786256D87006B1EEF?OpenDocument;How
do I Upgrade My LabVIEW 2.x VIs
Colleagues,
I need help/guidance on how to use FFT Spectrum (Mag-Phase).vi to perform
RMS averaging on sampled strip(s). DAQ produces strip of up to 120.000
samples (max 120sec at max 1kS/s). After that I am asked to do the following:
1) segment the strip into overlaping segments (equally sized)
Paul,
I just wanted to explain what you where seeing, in case you were
curious.
A LabVIEW executable always runs in the Run-time engine. In addition
an un-wired terminal returns the local LabVIEW instance, so for an EXE
that is the Run-Time engine
By adding the IP address you are now asking it
The last time I got the error message was when I had terminated the
command with \n (carriage return). Try \r (line feed).
Hello Simon,
Thank you for contacting National Instruments.
When you created your DLL in LabVIEW, a LIB file should also have been
created. To call the DLL in C#, make sure that you include the LIB
file in C#.
In answer to your questions:
1. You can solve this problem by including the LIB
I have successfuly instaled runtime plugin into Mozilla under linux. I
copied plugin into mozilla plugins directory.
When I connect to any page with LV Remote Panel, the plugin loads the
page, but after 100% it doesn't work. It just display gray rectangle,
or the Remote Panel on incorect position.
Hi,
I use in one of my VIs the
Open/Create/Replace File.vi and the Write File.vi to write data
into a file (LV 7.0)
When I start the same VI a second time (reentrant execution) it's
still possible to create a new file (with a different name) but not to
wirte data in it. It ssems to me that the
Does someone know of a way to make a multi-state button say (function
one, function two,function three, off) or implement boolean-like
behavior for a pict ring? I want to be able to cycle through the
states without a menu popping up for all possible values. So when I
press this button or ring it
Hello Stefan,
Thank you for contacting National Instruments.
To obtain the specific instruction set for that particular instrument,
you will need to consult your instrument=92s manual or manufacturer, in
this case, Instron. I took a brief look at their website,
www.instron.com, and they have
I have found some strange behavior while using stop controls. I have
a main vi which has two while loops. One of them is used to
continuosly acquire the images. The other while loop has event
structure that has several booleans which trigger different events.
Both the while loops are operated
Does anyone have Vi's or information on how to convert waveform data
to nCode .dac format?
You could just pass the data from the acquisition loop to the other
via a local variable.
Using LabView 7 in Windows XP...
The user should be able to choose one of (probably four) different
front panel layouts that appropriately displays that data. Is there
any way to have a different set of front panel objects appear based on
a user's selection of, say, a radio button?
Thanks.
I have stumbled across a LV problem with locating menu rings close to
window edges. As long as the list of ring menu entries is long enough
to extend beyond the edge of the screen when the menu is opened, the
entries in the table are not all visible.
For example: If I set up a menu ring with 4
You are close to what a waveform analyzer does. It is not mathematically very clean,
but it is useful for watching frequency evolution over time. But you need a time
averaging buffer.
For each of the 6 segments, do an FFT and get the Mag and phase. Have a buffer that
is the same length as
At 12:52 -0600 02/03/2004, Vic Blosser wrote:
Missed steps, non-functioning portion of the application. Things will work in the
development environment but not after it's compiled. I tried saving as 6.1 but there
are too many errors.
I'm seeing is code within loops not completely
We've seen this problem in the past. We found the cause to be the combining
of motor drive signals in the same cable bundle as encoder feedback wires.
Noise was being coupled onto these wires and was cousing erroneous feedback
signals. The drive cables should be seperated from the feedback cables.
Hello all,
I have a problem copying a source image to a destination image using IMAQ
Copy. Suppose the source image handle is img1 and the destination handle
is img2. Both images have been created in advance as RGB images with 0
border. Sometimes the handle of the output image is img2, which is
I am having a .gif file which consists of vi code. I want to convert
that .gif file into vi complile it. I am using LV 6.1 7 express.
Is is possible?
Reverse is surely possible like we can convert the vi diagram into
gif/.bmp file? But above i dont know?
As others have said, it isn't
Does someone know of a way to make a multi-state button say (function
one, function two,function three, off) or implement boolean-like
behavior for a pict ring? I want to be able to cycle through the
states without a menu popping up for all possible values. So when I
press this button or
At 13:53 -0600 02/03/2004, Vic Blosser wrote:
It in the error log indicating that certain vi's from the user libraries, instrument
drivers and of course some of the labview vi's can not be saved in 6.1. It is a
fairly substantial list.
Right, but all those should still exist as 6.1 files and
At 2:27 PM -0500 2/3/04, Scott Hannahs wrote:
It sounds like you have http://www.laputan.org/mud/mud.html. I
have a couple of those projects as well. One that has been brought
forward from Version 1 of labview and I hope to get to another major
rewrite this year.
Thanks for that link, Scott,
I have heard this is a definite LV problem that has been around for
awhile. Has anyone found a work-around for it?
This action is intentional. The goal is to have the current value open
under the mouse. This is in part so that a double click is less likely
to change the value. It also
Also, I'm wondering if it is possible to have several graphs
underneath each other in the front panel, so that when the user
presses say, F1 through F10 it brings to the front different graphs.
That way I can have 10 graphs but only show one at a time (but I can
scroll them back in time to
The user should be able to choose one of (probably four) different
front panel layouts that appropriately displays that data. Is there
any way to have a different set of front panel objects appear based on
a user's selection of, say, a radio button?
You can either build a panel that acts as
This is just a shot-in-the-dark but try adding this to your labview.ini
file:
BldApp.RemovePolyVIsandTypedefs=False
Restart LV then rebuild your app.
Michael Aivaliotis
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Vic Blosser
Sent: Tuesday,
Thanks for that Evan. I sort of worked out it was checking the local
instance, but it took me a while to work out I had to configure the VI
server...
Regards,
Paul.S
I am looking for LabView Drivers for an axiomtek AX4810 PCI-GPIB card,
I have tried the manufacturer and the vendor. The data sheet for the
card says that it's 100% labview PCI-GPIB compatable. Windows (98)
says that it is working properly but I can't get LabView to find it.
It says that I don't
David,
It would seem that your loosing encoder counts or counting encoder noise.
There is a very old NI app AN084 note Using Quadrature Encoder with
E-Series DAQ Boards which suggests a debounce circuit for encoders. Why
NI does not put this circuit in their encoder circuit is a mystery.
I
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