Acquisition of data from an external device that uses RS - 485

I am currently using a device cDAQ 9174.  I'm trying to connect the cDAQ to an external source that communicates via a cable series RS-485.  I spoke with several representatives of Lawbview and they told me that there is no direct way to talk on the chassis with the serial cable.  I need to buy a USB-485 cable series and communicate in parallel in LabView.  If I go directly through the cDAQ chassis, so why do I still need?  And I'm lost as in how I communicate with an external source in Labview.

My second question.

I have a cRIO 9074.  And, through a lot of research, I noticed that it seems much easier to use this device for this situation.  My only problem is that I am new to LabVIEW and I think that working with the cRIO can be a little difficult for me at this stage.  My question is, it would be easier to make the acquisition with the above configuration, or use the cRIO and spend a little extra time.

The application that I am trying to make is the following:

I have a RS-485 of the external source.  Then, I want to broadcast the series of 2048 byte stream that is continuous in NEITHER and do review the serial data and assign a virtual indicator on a chart or display a message to tell me what will happen in the serial data stream.

cRIO is certainly more complicated to go only a USB-485 cable.  cRIO is designed more for embedded applications, series No.  You must also cDAQ in the equation.  All you need is the following:

NEITHER USB - 485

http://sine.NI.com/NIPs/CDs/view/p/lang/en/NID/12845

Someone suggested a cDAQ to you for this application?  cDAQ is a platform for flexible data acquisition for reading of the analog signals and digital bullies.  If your data flow conforms to the RS-485 standard, you don't want cDAQ for this.

I have attached a sample program to help you get started.  There are examples that are included when you install the NI-VISA driver that supports communication with LabVIEW series with LabVIEW.  If you have installed NI-VISA it should appear on you NOR Finder example located in the main menu to help > examples find if you search for "serial".

Tags: NI Hardware

Similar Questions

  • have we not back up our data to an external device before the update to windows 8.1

    have we not back up our data to an external device before the update to windows 8.1.

    update to windows 8 8.1 will affect the data in the laptop...

    @swati90

    If you upgrade from the Microsoft Store, your applications, data office and personal will not be deleted.

    If you're updating with an ISO will always give you the opportunity to register personal files.

    Error on prudence, I like so I will say that it is not a bad idea to back up important data to an external drive before the upgrade.

  • How to extract data from a signed pdf that was sent to me.

    I can extract data from a PDF file that is not signed, but how to extract data from a signed PDF? Exporting data option does not work once it is signed. Specifically, I want to combine the data into a csv file, but a PDF signed does not to me.

    Hi evanb92625060,

    It is not possible to extract (using Acrobat |) Collection and management of the PDF to form data) data from a signed PDF form is that it locks all fields in the form.

    Kind regards
    Nicos

  • How to ETL extract data from database Oracle 11.1 using Cognos Data Manager 10.1

    Hello

    I need to run the IBM Cognos Data Manager 10.1 version ETL tool for extracting data from the Oracle11.1 database.

    My understanding is that, from the point of view of database, the best way would to have a stored procedure that will provide a reference cursor in the ETL client tool.

    However, a database procedure the ETL tool running seems not to be possible in this version of the data manager.

    If someone has done this before? What is the best way for this snippet to do?

    Thank you

    Emilija

    Annabelle says:

    My reading of original question: "What is the best way for this snippet to do?"

    Sorry - is NOT helping.

    The BEST way to extract data from a table is to use a SELECT statement.

    You said you want to do.

    So just repeat your original question instead of those that ask you to answer will not move forward us.

  • can I use devices that use 32-bit on windows 7 64 bit

    Original title:

    Information on

    If I'm on Windows 7 Home Premium 64-Bit we use devices that use 32-bit

    Frank

    Most of the time what works on 32-bit will work also on 64-bit. What you can't do is run the 64-bit on a 32-bit system software.

  • playing a DVD from an external device

    I just bought HP Envyx360 15.6 without CD/DVD drive, so I bought an external. I installed a LG external device and the DVD will not play. How to read the DVD to external devices?

    Thanks I'll try that, after I have the LG device to uninstall and reinstall another LG unit. Hope this works

  • Acquisition of data from multiple loops

    Hello

    I tried to adopt a program of data acquisition of multiple loops with control of queue, but it does not work as it should. (Or at least the way I think it should) Could you please help me it smooth? I have seen a few screws on the internet with the queue-control and tried their adoption.

    My program should work this way: after you complete the settings, I begin the acquisition of data (an analog output and 2-4 analog inputs), but I only want to save the data acquired when I click on a registration button. (Then these data would go for further analysis). While doing the analysis, the acquisition may be suspended. However, when I click on record I would like to have a feature to instantly restart the recording and to ignore the previously recorded data.

    MainProgram vi is the application itself, with some settings made by the event handlers (now only limited to a selection of signal file and the channel settings). Then the data acquisition can be started by clicking on the button start the Acq.

    And these are my issues: first, sometimes the queue starts, sometimes is not (or at least it does not start the data acquisition). And the main point: I put the sampling frequency, but it is acquired at a slower pace of well (my signal has a delay of 4 seconds, but he needs at least 20 seconds before getting close to finishing). And the strangest: sometimes, especially after some time (about 1-2 min) it freezes and does nothing with the acquisition of data (yet labview seems sensitive, just my program blocks somewhere).

    So now only controlled acquisition is in the problem and firstly I don't like on the transmission data for analysis and recording. (Which seems to be the smallest problem).

    What I am doing wrong? Thanks for your help.

    I join all the files.  (MainProgram is the application itself, MY. SIGNAL is the signal I want to exit.) I use a USB-6211. (for physical work, home a simulated).

    Not directly related to your mistakes but (and here I don't mean to take on you, but...   With an alias as yours, I assume that you have some sense of humor)

    Really?  an event structure single image with only one case of timeout (value 1mSec) with a Dequeue inside element how do you code would work by simply removing the structure of the event entirely

  • Download data from an external table with a where clause clause

    Hello

    How can I insert data in an external table into a table already created in the database where person_id = person - _id on the external table?

    Example:

    External table
    XX_EXTERNAL_TBL (Person_id, emp_number, emp_name)
    Internal table
    XX_SQL_LOADER_TEST (Person_id, emp_number, emp_name)
    ID of the person already exists on the inner table (want only the last column to import where the ID of the person are the same)


    Thank you

    You talk of * 'Update' * (Fanfarrias y tambores)

    Update XX_SQL_LOADER_TEST SLT
    Set emp_number = (SELECT emp_number from XX_EXTERNAL_TBL WHERE AND.) Person_id = HI. PERSON_id)
    , emp_name = (SELECT XX_EXTERNAL_TBL emp_name AND where AND.) Person_id = HI. PERSON_id)

  • How to get data from an Excel file exist using report generation tools

    I try to use the Excel vi get the data of the report generation tool, but I can't understand how to activate a path can be explored in the right type for the VI.  I tried to use the new Report.vi, but this does not work unless you use a template.  It will not open an existing excel file and make an open report to extract data from.

    Essentially, I have a bunch of excel files that have data in them, and I want a VI allows to analyze the data.  I'm going to pull in all the data directly from the excel file so I don't have to reproscess them all in text so I can use the more standard datasheet live but to convert even the excel file programtically in labview I still need to be able to open the excel file and get the data?

    I found my problem.  It turns out that only not to have had a problem with the tool box new report vi.  I had accidentally wired an input control of path of folder instead of an input control of path of file to it.  Changing the file type took care of her and I was able to access excel files, I tried using the new report VI to extract the file, and Excel Get Data to extract the data.

  • Recover data from the subject of BAM using SQL Data Table

    Hi all


    If we create BAM SCARE that say XXEmployee _XXEmployee corrosponding BAM architect table would be created in the schema ORABAM.

    If I ask... Select * from XXEmployee, I get error saying this is not a valid identifier (table coz name is from a " " "").

    No idea how to extract data from BAM PERFORM using the Sql query.

    Thank you
    AB

    Hi AB
    I'm not the best oracle dba, so I don't know if the version makes a difference.
    I use this query on 10gr 2 in SQLPLUS (make sure you have quotation marks around table names)
    for example, BAM comes with a sample 'Employees' data object, I can do via sqlplus
    Select * from ORABAM. "" _Employees;

  • Loading data from multiple tables in essbase using ODI

    Hello

    We have a scenario where the data comes from more than one table. I would like to know how ODI will load the data for the right combination of members

    Hello

    Consider each data table has a field that corresponds to the other table. You can simply drag the source interface data warehouses and create a join between the tables.

    See you soon

    John
    http://John-Goodwin.blogspot.com/

  • read data from 10 kHz - 250 MB using tiara

    Hello

    I'm using labview, I do data by connecting to a sampling of 10 kHz to the task for the event, this file processed by the TDM file format, that will be generated a file per day. almost, I'll get 250 MB of file size, my question is it possible to read all the data of.. tiara?

    tell me how many points can be read at the same time...?

    need of documentation on the DIAdem, which is going to be really help to me

    You keep doing that...

    Did you do a Google search on "data maximum Diadem?

    That's what it is.

    http://forums.NI.com/NI/board/message?board.ID=60&thread.ID=10574

    First try... and if you stuck then ask.

  • copy data from an frm another form using one-third of

    Hi all

    I have three forms f1, f2, f3

    in f1, I have order_no, value, address
    List of F2 to order_no based on formula 1
    F3 F1 for sale

    I want a button on f2, if I select a particular order no and press the button copy data from f1 to f3

    Please guide

    Thanks and greetings
    Vikas Singhal

    Hi Vikas,

    Then try the global variable way. In the n "f2" (all orders with the status of the list), in the WHEN BUTTON PRESSED trigger, assign the command not to a global variable.

    :GLOBAL.Str_Sales_Order_No := :.SALES_ORDER_NO;
    

    and then call the form of the sales invoice.

    and in the One TIME-NEW-FORM-INSTANCE trigger, get the values from the order to the sales invoice to use a SELECT INTO statement.

    SELECT SALES_ORDER_NO, ORDER_DATE, ............ INTO :SALES_INVOICE.ORDER_NO, :SALES_INVOICE.ORDER_DATE, ......... FROM SALES_ORDER WHERE SALES_ORDER_NO = :GLOBAL.Str_Sales_Order_No;
    

    Kind regards

    Manu.

    If this answer is useful or appropriate, please mark. Thank you.

  • Oscilloscope for the acquisition of data from the usb-6009 or - example of temporal division for 5 seconds, 10 seconds

    Hey Hey everyone

    I was looking for an example for two-channel oscilloscope virtual using e/s all-in-one of the 14 bits of NI DAQ USB 6009. I tried to research for example BOF time division or s/div for 1 second, 5 seconds, 10 seconds.  but was shocked to find that there is no reference for it. The range of oscilloscoper virtual

    Minimum - 10 micro s / div maximum -10milli second div but there is no example for 1 second / div or 5 seconds / div...  If anyone can guide me. I'm new to labview environment.

    This is the oscilloscope two sample obtained from google search. is there material limitations. ?

    I'm working on continuous 4-channel data acquisition data acquisition using niusb 6009

    The sampling frequency is sufficient for any desired s/div. The sample rate is 12 ksamples / s per channel, so if that meets the Nyquist criteria for the input signal, you can capture it. The number of samples has no effect on that with the exception of the amount of the signal you acquire. Your chart is not stable, if you do not trigger the acquisition. Even as real significance, therefore your emulation seems actually successful.

  • Loss of data from the external hard drive Verbatim

    Original title : Verbatim Back Up unit

    Somehow, I had saved my original Windows XP files and photos on my Verbatim block that sits on top of my desktop Tower.  Connects to the computer with the USB cable and is on port G.  For the sake of unnown, when I check it tonight for some old pictures, all been wiped clean slate.

    Hello

    Do you remember any changes made to your computer?

    Follow the steps mentioned below and check if that helps.

    Step 1:

    Check if the files are hidden .

    Step 2:

    You can also try to connect this external hard disk on another computer and check.

    Step 3:

    If none of the steps to help, you may need to get a third party software using your search engine that would recover your lost data.

    WARNING OF THIRD PARTY
    Using third-party software, including hardware drivers can cause serious problems that may prevent your computer from starting properly. Microsoft cannot guarantee that problems resulting from the use of third-party software can be solved. Software using third party is at your own risk.

    Aziz Nadeem - Microsoft Support

    [If this post was helpful, please click the button "Vote as helpful" (green triangle). If it can help solve your problem, click on the button 'Propose as answer' or 'mark as answer '. [By proposing / marking a post as answer or useful you help others find the answer more quickly.]

Maybe you are looking for

  • Is 3 CleanMyMac safe?

    I received an email on CleanmyMac3 and it is free to download, but do I need? I wonder why it is not available in the Apple App Store if it's really good for our Macs.

  • The sound is choppy on Firefox, but not IE

    Whenever I try to play a YouTube video or a song streaming on Grooveshark, on Firefox, the sound is very jerky. He stutters and looks like the way your voice sounds if you speak through the rotating blades of an electric fan. The problem started shor

  • Arrow black constantly on tracking services. This drain my battery?

    HI, I recently bought a watch of rock (yes I know, not expensive mans iPhone), iphone app uses constantly in the background location services and black filled in arrow is constantly on the screen. Will this deplete my phones battery faster? Thanks fo

  • I should "separate compiled code in the source file" for *.ctl files?

    There are a few good reasons to code compiled separately to screw Now, the option is also available for custom orders/type definitions. I wonder if there is any benefit whether for the separation of updating the code of these? None of the reasons for

  • Classic BlackBerry cannot open email attachments (appear as winmail.dat)

    Just got my new Blackberry classic and tried to send a photo from my computer to my phone.  This message appears "no viewer available fo Winmail.dat.»  I didn't have this problem with my old Blackberry.  Can someone help me?  Very frustrating!