Hi
Adriana
It will be that you save this program for me in a version of LabView
6 and order for me
Thank you
Rogerio
If you are reconfiguring your port in order to read the port, the
port will be truely reconfigured as read inputs with the default state
being pulled up.
If you use the same task ID that was generated from the write config
in the read port function, you will be able to readback the written
value.
Do you simply want to offset the magnatude of the waveform or allow
for time shifting of the waveform as well? One method I have used is
to offset the waveform and rotate it forward and reverse taking the
maximum value of all three waveforms for the new upper limit. similar
for lower limit. If
I will post a library when I get back to the office. We use WAGO
controllers fairly often. Give me an e-mail to send them too.
first convert your raw acceleration units to ft/sec/sec (or whatever
unit you want velocity and displacement) Then use the integrate
function (twice for displacement). You may use FFT for frequency
content but it does not help for velocity or displacement. If you
have already tried this, you
did you set the connector pane without relinking to the sub-vi?
Does your code hang or just timeout. You have a 10 second timeout.
When your program does not respond, open the diagram and turn on
execution highlighting, where is the code? Your while loop has a loop
counter exit but closes the session after the first iteration. Lower
the timeout, don't close
you can pass a reference to each graph to a print all four vi that
can get all of the attributes of the graph in order to reproduce them.
You can also construct an HTML report with all four graphs laid out.
Are you reading the 15 minute data file and computing mean? how
about, writing the data to file as you are but adding the running sum
of each value and dividing by N at the end of the sample period. This
will eliminate the file read/compute accumulate the running sum as a
double so that you
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.
is there any tool kit for implementing my application using goop
concepts
With the equipment that you have, a good choice would be Opto-22
series for the G4 series of the Opto-22. Select the screw terminal
base and an ODC module appropriate to your power/voltage requirements.
this will use the TTL digital output to control a power solid state
relay. If you look to the
The while loop combined with a state machine breaking your problem up
into pieces allowing you to check for abort at the end of each piece.
Works well.
thank you
When you build a shared library with LV 7.0, the .h file is
automatcally generated and included in the distribution cab file.
How to replace this .h file with my own .h file?
Indeed the older instruments may not have been fully compliant. The
response time of the micros in these instruments running @ 4 Mhz is
just not good enough to respond to (or even change bus states) back to
back commands from a 3 GHz processor. They may also have depended
upon one of the other
The IVI model for labWindows/CVI instrument drivers typically keeps a
state for the instrument under control to solve exactly this problem.
When you execute a get state method for the driver, you get all
parameters even though the instrument does not support query function.
This is the best way of
The PWM function should work fine. Check out the DAQ examples for
counter timer PWM functions. The second part of the question is
closed loop control. How fast do you need to close the loop? How
accurate does the loop need to be? 6020 Certainly you can close the
loop at low rates (10 Hz for
My application automatically creates and/or modifies an .ini file to
save key settings in the software. This works fine when running it
within LabVIEW itself, but when I run the .exe application file
created using LabVIEW 7.0's application builder, the software always
uses the default settings I
Simple way would be to place a transparent boolean button over each
graph so that you can use the button event to pop up a big graph and
put it away. There are other ways as well. If this doesn't work for
you, comment.
Turn off run with multiple threads option. You are probably seeing
the effects of user interface thread not getting any time to update
the graph. Also set front panel smooth updates. This may not yield
the performance that you want but it may be the answer to your
question.
the DAQ function on the pallet that will return the device name for
each device number. use this to create an abstraction manager to
reference named devices. Keep going with the approach of reuse
without hardcoding info. It will be worth it.
Hallo Dennis:
Thank you for your help.
But i don't know how can i add the Serial End Mode for Writes to the
VISA Instr property node and use TermChar as a value. Can you send me
a example.
thank very much.
Long.
I have some questions about running Labview or CVI programs:
1. Is it possible that I can run a Labview or CVI program in a
computer that doesn't have corresponding engine installed? Sometimes I
need to run such a program in another computer, but I don't like to
install the engine just for that
I tried to download a patch from your FTP site last Thursday, then
again today. The file is not found on the FTP server at this URL:
ftp://ftp.ni.com/support/labwindows/cvi/runtime/7.0/win32/cvirte70.zip
Can someone please tell me where this file really is located? I need
it to patch my
Hi Tommy,
forget it - not possible - use a while loop
regards
Werner
I know this is probably a very simple questions, but for some reason I
can not think of how to write to a 3D array. The application that I am
going to use this for is that I have multiple graphs with x and y data
points, and I want to be able to write all the graphs with their data
points to a 3D
Hi
I an trying to product a program in labview that increaments a GPIB command
to a Function Generator.
The command format is: FRQ 1.0E + 2 (this equals 100Hz). I need to
increament this up 1MHz so,
I have written a bit of psudo code to demonstrate what I require.
For i = 1Hz to 1MHz
//
How can I change waveformchart history data length in Labview during a
VI's running?
Hi,
It's still not going by the music..
I have Windows XP.. :-/
Hi,
I have a few things that I don't understand on the picture..
1. After the unboundle function I need to put on each one of the exits
a LED?
2. What is the EQ Display clusters? What do I need to put on them or I
just need to create them by the create -- indicator ?
Please explain me the VI
I still don't realy understand.. Can you please show me the front
panel??
If you have MSN Messenger or ICQ please write me the adress/number and
will talk in there..
10x..
Hi,
You build to me a demo equalizer this is not the real signals that
coming from the sound card.. I want the equalizer to show me what
coming out of the sound card.. Do you understand?
10x again
Hi,
Yes, I know.. This is 1 more thing that I want to talk about.. what is
the LPT port voltage? 5v or 12v? I think that 5v but I'm not sure..
10q very much..
Hi,
I'm feeling very stupid because I've alreasy forgot what is TTL.. :-/
I looked in my book of the basic course I and I didn't find nothing
about it but I read the part on the LPT connection.. All I remember is
that TTL realated to a squre signal or something like that.. please
remind my.. :-(
Hi again,
Thank you about the link I'll read it right away.. but I don't think I
explained my self very good I'll write to you exacly what I Want..
I saw a guide on the internet who to bulid a LEDs organ And what it
do is turn the LEDs on and off when there is music, by the rate.. I
don't know how
Hello,
I just completed the LabView 7.0 Basic Cours I..
I'm playing in LabView to get to know more functions and I want to
control the LPT voltage is that possible to do with LabView?
Thank you,
Reiss Rotem
What I learned so far is that in LabWindows you can create an IVI
driver, you need the fp and dll parts. The wizards walks you through.
LabView and LabWindows sits on top of this. The IVI process creates
the c and h code and must be written correctly. Then in LabView you
can import this and if
What is the process of turning a LabWindows application into LabView
VI.
I need to be able to receive SMS texts sent from a mobile phone
instantly with Labview. Firstly, what kind of GSM modem if required -
can a standard PCMCIA laptop modem be used (i.e vodafone) or should I
use a serial modem with full Hayes AT support.
Secondly, how is labview configured to look
Thanks Randall, the problem was related to file I/O. I found a subVI
that was using converted LabVIEW 5.1 versions of the configuration
file VIs with references opened with the LabVIEW 6 Open.vi. The
reference was passed back out and closed with with the LabVIEW 6
close, but apparently there is
nice to hear this .
I am dealing with large amounts of data, arrays in excess of 65000x15.
I need to build the array in a loop. When I use the shift register
approach it takes forever. The fastest way I have found so far is to
write the rows out to a spreadsheet file and read them back in. This
is fairly quick,
this is a test message
I have a memory leak problem with an application built under LabVIEW
6.0.2. I have found that the source of the problem lies within a loop
of code that runs every minute. It reads numbers from a remote data
socket server and appends the numbers to 75 text files using the Write
Characters to
Dear germannubie,
what is NV 40/1CL ???
Pls enlighten a german-oldie
regards
wha
no problem
regards
Werner
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