Hi Team,
How to change Dynamically 3 Y scale Value and also Auto & Manual Scale Features for 3 Y Scale.
Thank You In Advanced
Rupesh.v
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Dynamically Change, Chart Graph scale With 3 Scale
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Create a .csv when using a Real-Time Module
Hi All,
I'm using LabVIEW 2018 with FPGA Module and Real-Time Module.
I'm trying to execute a very simple task of creating a .csv file in a folder on the Desktop.
When using the Real-Time Module, this doesn't work. No errors show in the Error Out.
I'm assuming with it using the Real-Time Module that the Path name must be written differently to normal.
If this is the case, then is there any simple way to change the Path generated from "Path->Browse Options->Selection Mode->Files or Folders" (e.g. 
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connect several GPIB
Hello,
I work with molblocs connected by GPIB cable.
I would like to be able to connect several of them in parallel, i.e. all on top of each other to my GPIB port on my acquisition module.
When I connect only one I can read its identity on NI MAX but when I connect several the identity takes very strange forms that I can't read.
I would like to know how to differentiate them and especially how to select with which of my two devices I want to communicate at the moment.
Has anyone ever been in this situation?
I have already read this article https://www.ni.com/getting-started/set-up-hardware/instrument-control/f/gpib-usb , but it did not help me much, I do not understand what is meant by "If you have several instruments on the bus, you can determine the address of a particular instrument by disconnecting all the others."
Thanks for your help.
Margot.
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Getting Error 34 "Print Dialog Error" from System Exec. all of a sudden?
Hi,
I am getting an error 34 in a vi that erases the internal memory on an MCU before flashing the firmware. This code has been working for me for a couple of years, and can not find the cause.
I have attached the vi, and a screenshot with inputs & outputs.
Any thoughts would be greatly appreciated!
Thanks,
George
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Missing counts in the encoder
Hi,
I am using a optical rotary encoder to measure the angle and the RPM of the shaft. I have a USB 6341 DAQ system which I am using for acquiring the encoder signals. I am using the counters to count the edge of channel A. When I acquire the data and look at the data, it looked like counts were being skipped in between. It happens more drastically for the case of higher speeds whereas for low speeds, it happens sometimes. I looked at some online resources but could not find any suitable resource to help with this problem.
I have attached the code as well for reference. Can someone please help me with this issue?
Regards,
Abbishek
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MB Ethernet Master Query (poly) sub VI not found
Hi,
I have been looking on different forums for this answer and I downloaded many different libraries. I downloaded the Modbus library, but LabVIEW cannot find the sub VI MB Ethernet Master Query (poly).
What can I do or download?
Here is an example:
Thank you.
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Realizing different current signals with programmable power supply in Labview
Hello community!
I hope you can help me with the following:
1.) I want to generate different current signals like rectengular, trapezoid, saw-tooth, sinus etc. with my programmable power supply. Since i am relatively new at using Labview i am having a hard time figuring out how i can programm a VI that can communicate with the power supply and execute what i described. I saw there exists an express-vi called "simulate signal", is using this a good start?
2.) Also i want to connect two Solid State Relays with the power supply to turn the current on and off.
Do you have any recommendations on how to learn to program my project in labview or any ideas in general? Your ideas or recommendations would be much appreciated!
The power supply i am using is the TOE 8491, which also comes with a labview driver and some pre-installed VIs.
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10 Second TCP Connection Time Win10 -> LVRT
I am attempting to establish a TCP connection from a Windows 10 client (LabVIEW 2020) to an sbRIO-9603 (LabVIEW RT 2020). It always takes ten seconds. If I move the server from the sbRIO to Windows, the same action takes a couple of milliseconds. The network connection is through static IP addresses on both sides over a dedicated ethernet connection. I have attached the project below. Any ideas on how to speed this connection up?
Note that I have found a couple of instances of similar behavior on the internet, but no answers that made any difference.
My host computer is a Lenovo P53 laptop with an i9-9880H CPU, 16GB of RAM, and 1.5TB of SSD, 3/4 of which is empty. CPU usage is low while this is occurring. I am guessing a timeout somewhere is to blame.
And please do not tell me to use any proprietary NI networking protocols. This is a test for code which will connect to a C# application running on Windows, so must use TCP.
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Disable dynamically control variables
Hi,
I am using disabled and grayed in property nodes of controls in a case structure.
However, I have noticed variables can only be disabled or enabled when starting the application and not at run-time. I would like to disable controls after a variable change from False to True.at runtime. The behaviour of my VI is that it does not wait the variable change to disable my controls but that is not what I want to do.
Can you help me ? (I have Labview 64 bits 2020)
Regards,
Yohann
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VISA: (Hex 0xBFFF0011) Insufficient location information or the device or resource is not present in the system.
Even though all my instruments are found by NI-MAX and their names populate the Select instrument dropdown list the WRITE action tells me the instrument addressed can not be found. What am I doing wrong ?
Connection is via Ethernet to a wireless access point on my network.
Other ways to send the command *IDN? like directly from NI-MAX work fine.
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DAQExpress X Y Curve for even count and Along
Dear Sir/ Madam,
I am using the DAQExpress and i have two kind of input one is analog (Input ,0.5V to 5V ) other is event counter ( PFI0). May i plot the X Y Graph together in DAQExpress software ?
I am using the USB6008 data Data Acquisition Card, how may i reset the counter after 360 count . I am new for LabVIEW software . I have to plot the Pressure and Volume diagram for combustion engine in real time.
May i ask to please share if you have similar example Thanks and looking forward for your reply .
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Labview.exe has stopped working
When restarting an old computer that had been sitting off for years, I discovered that LV 7 and LV 2010 both will not run until the computer clock has been set....! After the CMOS battery dies some computers default to an absurd date year 9999. That alone can keep Labview from launching properly, resulting in an error dialog with the subject message.
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Strange LabView/cRIO Digital I/O Behavior
Hi everyone,
I just got a question about cRIO and LabView.
I am using cRIO-9082 FPGA controller and NI 9401 for sending IGBT gating signals to my power circuitry. I have two separate control programs under the same LabView FPGA project that I am testing. In each program, I have made a Boolean button in LabView that I need to click to start execution my control strategy (or else all gating pulses from NI 9401 are FALSE).
A few days ago, I first ran one of the control programs and everything went well as usual. Then I stopped and closed the program, with all gating signals back to FALSE. Normally, I would first power down my power circuitry, switch to the other program, and then power everything back up again (in retrospect, I don't know why I always did this). But this time, I forgot to do so and kept the circuit powered up, and then once I opened the second program and clicked run button of the LabView (NOT the Boolean button to start executing my code that I have made), somehow the cRIO sent some gating pulses that I didn't issue and caused my IGBT & MOV to be destroyed. This was very unfortunate event, and I just want to ask whether cRIO somehow will generate some random digital outputs when switching and loading another program, or something like that? I felt that this was a strange behavior of cRIO that I did not know before.
Thank you very much and I look forward to your reply.
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Error handler message during error state
Hello,
In my error handling subVI, how can I extract the enum String in the error case?
I found that in the current configuration, during an error state, I get nothing being put into the error string from my enum. Can you tell me how I can go about getting the enum string out even in the error state?
Thank you!
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pengontrol kecepatan kipas DC dan redup terang lampu menggunakan sensor suhu lm35 dengan labview-myRIO
mohon bantuannya untuk memberikan contoh mengenai pengontrol kecepatan kipas DC dan redup terang lampu menggunakan sensor suhu lm35 dengan labview-myRIO , seperti pengontrolan pada suhu ruangan.
mohon bantuannya.
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simulate complex impedance
Hi
I would like to plot complex impedance spectra (directly by using complex values), and I may not understand well or make a mistake I do not see.
For instance, for a RC, the impedance should be Z=(RCw-j)/(RCw)
I do not obtain de half of the circle I expect...
thanks for help (I added the vi as well)
Regards
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Code to press an HTML button which has no ID
Hi,
I'd like to control an internal webpage with labview. After found THIS topic I was able to create a code with can fill HTML fields with a content, but I'm somewhat stuck as I can't press a button.
Input fields on that page can be found using the HtmlElementCollection/get_Item method, which returns a reference by which I can set a given attribute (eg: value), but as the button I'd like to press has no ID, I cant use this. There is another method called HtmlElementCollection/GetElementsByName, but I can't process the reference it returns in the same way.
Sorry for not submitting a code, for some reasons LabVIEW just keeps crashing this morning. (but relevant code can be found in under the topic I linked above)
Thanks!
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Labview
I am new to labview. I am doing a project on detection and classification of disturbances. Can anyone please help to generate different disturbances such as sag, swell, interruptions, hormonics etc.....? I have searched it in many websites, books and unable to do anything. Please help me out to sort it. I will be very much thankful for it.
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Case structure / event structure / while loop
Hello everyone
I am writing the goal/problems in our code and in addition, I am attaching the VI file with 3 issues highlighted on the front panel as comments. (Issue# , #= 1,2,3)
Note: if you want to run the code please don't forget to change the path of the text file in the code according to where are you saving it on your PC. The text file contains the variables we are using.
Goal: Two variables (data type is String – “Plant 1” & “Plant 2”) are inputs from the user. If “Plant 1” selected the LED should blink at “X” frequency and if “Plant 2” then at “Y” frequency. Note: The user can select One Plant or Both Plants (at a time). Code and Questions: 1. A code for blinking the LED using while and the shift register is working. 2. Next, we have tried to use Case Structure (selector, using with string data type – not sure, it is feasible: Question: How to use it?) to select “Plant 1” and “Plant 2”. Adding the code (blinking LED) inside the case structure, we are struggling to stop the while of that selected plant. Then we thought of using Event Structure. Still not helping it. Are we thinking of the right way to go ahead with Case Structure / Event Structure to achieve our goal or else there are some different functions in LabView which might help us to achieve it?
Thanks for helping
Ali
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FRC 2020 Game Tools Bricked Virtual Machine
I've been running a Windows 10 VM of arm64 and recently have just tried to install the Game Tools. Upon reboot, the VM has bricked due to the error "INACCESSIBLE_BOOT_DEVICE". I have done nothing else on the VM (no updates or anything).
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