hello i want to change overlay , Instead of the existing overlay, the overlay is placed on how additional?
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I want to change overlay
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Modbus Over UDP
Hello,
Is it possible to implement the Modbus Over UDP protocol in LabVIEW using Data logging and Supervisory Control (DSC) toolkit?
Regards,
S Nagaraju
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Transfer data from web to LabVIEW
Hi all
i'm trying to transfer data from a web page to labview and i'm using GET.VI after that i'm using Match Pattern.vi to parse the usefull data out from that long string results
i have a problem in prasing data
any help please
Thanks
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Start a VI with Boolean as True
Dears,
I am so sorry for the simple question. I tried to find some information about in the forum but nothing helps me.
I would like to know if it is possibile and how to set a boolean control as true at the start of the VI. In other words, I would like that when my VI starts that countrol is on true value.
Thank you so much for your time!
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Fit a square wave to an analog signal
Hi,
I am looking to take an analog signal and fit a square wave onto it, as shown in the attached picture (I added the red line in Powerpoint, but this is what I would like to achieve programmatically).
This will allow me to condense some complex data down to just the key information of magnitude and duration for each square wave.
I have searched the forums and LabVIEW help but am really not sure how to approach this. Will it require a completely custom solution of can I make use of existing analysis tools? Any suggestions would be much appreciated.
Many thanks for your help,
Robin
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lettura multicanale
Salve, ho bisogno di aiuto.
Devo modificare il codice che vi allego, in modo da poter leggere gli 8 canali di un oscilloscopio teledyne lecroy ( 8000 series) simultaneamente. Come posso fare?
Vi ringrazio in anticipo.
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Custom Polar Plot
Hello,
How to make polar plot angle labels and markers as shown in the below image.
---Image reference taken from Orbit-FR Midas Software.
Regards,
S Nagaraju
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READ PCM SOFTWARE PART NUMBER WITH ECU TOOLKIT
Is it possible to read the PCM software strategy part number with the ECU toolkit? If so, what is the name of the function?
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How to get spectral analysis of 1D array of waveform ?
Hi,
I am measuring output of 4 strain gauges using NITB-4330 front block mounted on a NI-PXIe-1073 chasis. When i used the output of DAQmx Read to get spectral analysis, it did't show any results. I thinks, it has something to do with data type. One more problem is, i am getting error-20023 for filtering even though my cutoff frequency is less than half of the sampling frequency. Can anyone please tell me what am i doing wrong and how can i solve these problems?
Please refer the attached VI, image and following specification for more information.
Bridge Configuration: Full bridge
Excitaion Source: Internal
Excitaion Value: 2.5 volts
Bridge Resistance: 350 Ohm
Max. Value: 25
Min. Value: -25
Units: mV/V
Sample Mode: Continuous Samples
Sample Rate: 100 Hz
Source: Onboard clock
Thanks in advance.
Regards,
JP
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display of spectrum of data on graph
Hi,
I am sending serial data from Arduino (baud rate 9600) to the Lab view. These data are to be displayed on form of bar graph. Means if i send 10 numbers of data 1,2,3,4,5,6,7,8,9,10 then it will displayed on x-axis position of 1,2,3,4,5,6,7,8,9,10.
Now I am changing values to 10,20,30,40,50,60,70,80,90,100 then it will be updated on x-axis position of 1,2,3,4,5,6,7,8,9,10.
I am confused how can I achieve this. Please help me to do this.
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TCP/IP on Sb Rio losing connection on Restart
I have two Rios, which I eventually intend to expand to around 8 or so.
My question is, my server and client work without any issues when running, and will run for long periods of time with no issues. If I disconnect the Ethernet from one, and then reconnect, they will find each other again. Now both are Servers, and both are Clients for each other.
However, my issue comes up when the Rio restarts. When it restarts, they tend not to reconnect with each other on restart. The device that restarts is able to send data, but not receive data. Does anyone have any suggestions as to why this may be and what I can do to resolve this?
Thanks
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Error -2367 when trying to run LabVIEW-Multisim co-simulation
Hello!
I am using Labview 2017 to run a co-simulation with Multisim 14.1. A 3 phase IGBT inverter has been made, along with a bare-bones VI to run the co-simulation. When I want to run the Labview VI, an error message pops up, telling me the following:
Error -2367 occured at External Model in Untitled 14/Control & Simulation Loop
Possible reason(s):
Control Design and Simulation: The shared library corresponding to the external model returned an error.
Launching Multisim was unsuccessful. (L404)
I've tried simplifying the Multisim design to see if the error was resulting from there. This however proved to be unsuccessful. Would anyone know how to solve this problem?
See attachments for the LabVIEW and multisim design that I used.
Thanks in advance!
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verification of updates for an application at start
Hi
I have deployed a desktop application in several computers, for different people
When I'm updating it, I'm sending an installer to the network and ask for the users to launch the installer, that will replace the previous version of the program
I wander if there is a way with labview to automatically check existing updates and inform the user
thanks in advance for your reply
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Prevent cRIO from getting stuck when running out of RAM
I have been dealing with cRIO running out of RAM and then getting stuck, not responding, not restarting. It is crucial for my application not to get stuck. One way is of course to try to avoid this problem preventively, but I need a solution that safely restarts the device in case of bug for example, so that it does not let the device get stuck. Can you think any solution? Thank you.
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Zeal, Linux docset viewer
Hello, everyone ;
I use a documentation viewer called Zeal in Linux which displays (well!) API cheatsheets for over
200 languages.
It uses what are termed "docsets" and these were originally developed by https://kapeli.com/dash
for their Mac OS X program Dash. The Linux open source community developed their own viewer, Zeal, which I use.
It is indispensable for me with Python3 and Google's Tensorflow. I am looking for a docset about LabVIEW 2018 that has the CLI interface for LabVIEW (and more).
There is an authorship document ( the docset generation guide ) at https://kapeli.com/docsets, with examples. IF I need to generate my own, what recommended html files would I use ?
Thanks in advance.
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NI9871 on FPGA at 921600bps
Hi,
I am trying to communicate my PC with my cRIO-9034 via RS422. To do so, I have a NI9871 module in my cRIO.
One of the communication lines runs at 4800bps, and works well.
I need to use the second port of the NI9871 to read messages coming from the PC. Those messages are 4208-bytes length each, and the PC sends a message every 80ms. The baudrate of the communication line is 921600bps. The line has only two wires, which go from PC (TX+, TX-) to the NI9871(RX+, RX-).
The problem is.... I loose lots of data. In fact, the first bytes (between 100 and200 bytes) are properly received, but then it starts missing bytes. The following picture shows how I designed the reading loop in the FPGA:
As you see the loop is very simple. It just reads the bytes and enqueues them in the DMA. The RT side reads the DMA, but as I said, the data read in the RT is not the data sent by the PC, data is lost (first bytes are ok, then information is lost).
The port is configured in the RT side, as follows:
Messages are properly sent, since when I loopback my PC messages are properly received at 921600bps.
I am almost sure that the problem comes from the baudrate, since, when I modified the baudrate to 115200bps, the communication works as it should, the NI9871 module reads all the messages correctly.
However, I need to communicate at 921600bps. Theoretically, the NI9871 is able to work at that frequency. What am I missing? Does the NI9871 imperatively require to implement a flow_control mechanism to work at high frequencies?
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add icon/decal to array index button
Hi all ,
I know that it is possible to customize controls, e.g. you can add an icon (decals) to a blank button:
how to add a icon / decal to the array index button . in ( type def .ctl file )
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LabVIEW 2018 Crash
Has anyone been able to get LV 2018 to run?
I've tried 2 downloads on 2 machines, and it always crashes on startup.
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Importing a Text file to a Database
Hello,
I am new to using databases with LabVIEW. I am trying to import a text file into my database, SQL express, using LabVIEW. I am currently using the database connectivity tool kit already in LabVIEW. The current problem I need help with is figuring out how to connect my text file path, called "raw data path", into the "data" input of the DB Tools Insert Data VI. This text file has all my columns and data (around 400 columns) and I don't know how to connect this path to the DB Tools Insert Data VI so that I can import each column into my SQL express database. Below is a picture of what I have so far but I do not believe this is correct. I have also tried to replace the read to text file with a read delimited spreadsheet VI. Every other part of my code besides the "raw data path" part is correct though.
Thank you
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Detect how long a boolean is true
Dears,
I apologize for the simple question but I need help.
I would like to know how is possibile to determine how long a boolean is true. In other words, I would like to know after a boolean come true for how much time it is stil true.
I am trying with Time Elapsed but I do not really understand how to use it.
Thank you so much for the help!
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