CRIO best method of logging

I have an app cRIO to keep track of a timer in hours reboots. The application will almost never stop gracefully (which means that the power of the cRIO will be just unplugged). What is the best method of logging that can be used to keep the last value in a file on the cRIO without corrupting him or lose value.

I could simply write this value in an INI file every 30 seconds or so, but I don't want to take the risk of someone unplug the cRIO at the precise moment when the file was written to (I know that the chances are slim, but I've seen it happen).

Any help is appreciated,

Thank you

-ACC

I see two options:

1 (easy) open a new file every hour. Time stamp of the file name so that you know same between reboots when go to the next file. At least, this limits the damage caused if the system reboots during a file operation. You may even consider to always start a new file after a reboot, even if the last file has been open just a few minutes ago. This would further limit the amount of data lost or corrupted if a file is incorrect. Also, if you use the LabVIEW file IO primtives, consider using the flush after every write to ensure that all data is written to the disk.

2 (hard) have you heard of SQLite? It is a cross-platform compatible SQL embedded database. It is quite light enough to operate comfortably on your cRIO. The main reason that I bring it to the top is that their transactions are secure and won't corrupt the database (which is really just a file) even in the case of a loss of power in the middle of the transaction.

Tags: NI Software

Similar Questions

  • Best method to track usage of the file by the user?

    Hello world

    I currently need to look at a method for monitoring of the activities of the file in my organization and I need a little help to get started on the right track. I had some references point me to app Xcode Instrument via the business model of the file, but I currently have issues seeing any activity from users of the real network. to start, I simply set the target to "All processes" with the hope that it would bring together all activities and newspaper, in which he did for everything except users on the network. On mine, I also found some people who use scripts to dtrace or opensnoop, but I was hoping someone could point to what they think, it's the "best" method to track when a file/folder is accessed and/or modified.

    Also, as a note, we are in a mixed environment and so we only via SMB as our file sharing protocol in the case where it makes a difference. I know that in newspapers of the server application, it does clearly as AFP titles widely as I can only find small amounts of data for SMB in the newspapers (disconnects / reconnects, permissions, etc.). If I need to flesh out the details as well, this isn't a problem, and thank you to you all in advance.

    As with everything, there are a number of ways to accomplish.  Manager of the 'better' is one that works in your environment and that you feel comfortable.

    You can watch the common criteria framework that is built into OS X.  Try checking the man and man audit_control to get an idea of what is possible.  If you enable the service, you will record only login, logout, and authentication.  However, adding to the indicators you can save the file reads, writes, creates and deletes (most other things).  Are you trying to follow everything on local machines or just the server?

    Now, if you do this, you'll generate a lot of logging data.  The most logical way to handle this is to aggregate the log data into a centralized syslog server.  But it of more infrastructure and will pose challenges if you breadwinner and because portable computers that let the environment.

    Reid

    Apple Consultants Network

    'El Capitan Server - Foundation Services.

    «El Capitan Server - Collaboration & control»

    'El Capitan Server - Advanced Services '.

    : IBooks exclusively available in Apple store

  • What is the best method to move from an iPhoto from one Mac to another library?

    What is the I best method for export/transfer my iPhoto on MBP to the iPhoto library library on my iMac? I prefer to keep my metadata intact; I guess that to do a package contents 'show' of my iPhoto and AirDropping the 'masters' library, I won't lose it? I'm under El Capitan 10.11.4 on Mac.

    I just want to explain my situation because maybe I'm missing something. I have SUMMER will use the photo library iCloud for synchronization on all my Apple devices and as a backup off-site. Fortunately, I realized soon as enough it would become a management NIGHTMARE. I downloaded everything from iCloud to my MBP and want to get it all on my iMac, so I can clean up the mess of duplicates and others.

    I couldn't synchronize with realism of the iCloud photo library to my iMac because I would have had to download about 150 + GB of data, so that I can download the 30 or GBs who were on my families iOS devices iCloud and the MBP. ICloud photo library interface is NOT well designed or easy to use - download directly from the cloud is heavy at best.

    All tips are appreciated, thanks.

    Simply connect the two Macs together and drag the library in the pictures of the new mac folder - or use an external hard drive to the Mac OS extended (journaled) format and drag through - then launch iPhoto on the new system

    Move the masters moves original photos and metadata exactly as they were imported without organization

    And iCloud library isn't an option for iPhoto - it requires OS X 10.10.1 and photos 1 or later version

    LN

  • What is the best method to do a clean install of El Capitan (currently using Mavericks).

    I want to do a clean install of El Capitan. I am currently using Mavs 10.9.5 and my time machine goes back to 2010. I don't want to migrate everything. I want to start cleaning up. I read a few methods, but I'm curious to know if there is some consensus as to the best method.

    Make sure that you have a Time Machine backup.

    Download El Capitan and do an install from USB.

    Start the installer from USB and install it.

    (Ref - this :)

    http://osxdaily.com/2015/10/01/clean-install-OS-x-El-Capitan-Mac/

  • First HP: Best method to solve equations very slightly advanced...

    I always seem to struggle with trying to find a correct and reliable way to do different things with this calculator.  I've stuck with him since they were released at the beginning and I intend to continue to wear for everyday use when I finished my degree.  The problem I encounter is that there are two fairly detailed instructions published or find methods that I do not work for slightly more advanced problems than those in the manuals, etc. of the user.

    Then, I manipulated an equation until the following and I need to solve for alpha without random speculation and 40 different attempts, which is the best method to achieve this?  I tried to plug in this whole equation in the 'Solve' application in different formats, but the number it solves for is always about 0.5 to low or high, in this case I probably have a bad setting somewhere.  I also tried to solve, csolve and orders fsolve in AR but I always get some [[]] as a result.  I guess it's either a mistake or is it which indicates that there are several answers, but where do I go from here?  I was not able to find that [[]] actually means.

    Here's my equation: (sin(2*a)/(2*pi))-(a/pi)+0.75=0, where a = letter Greek alpha.)  The correct answer is 1,986 rad = 113.8 degrees.

    Please help, thanks!

    Sorry Tim, after little sleep and fees starting this morning, I realized that 1) I did not use the appropriate syntax to solve/csolve/fsolve, i.e.: I was not finishing the statement of education and that's why I was getting the [[]].  (2) I realized that when I received a response that was in degrees because I had not turned on my way to radians.  I am all set now and can find the right answer through a number of ways.  Thanks for the reply and my apologies for taking your time.

  • Tecra M4 - best method of printing of documents

    that would you suggest the best method of printing of documents etc. would be, when you use the TECRA M4, because there is no printer port.

    Hello

    Many printers or the most recent printer supports only USB port interface.
    But if your printer supports only the parallel port, so you can use cable adapters.
    Check this box:
    http://www.ramelectronics.NET/HTML/usb_printer_cable.htm

  • What is the best method/app to remove the old files on a late 2009 iMac?

    Want to clean and remove some old files, on which some I don't even know.  What is the best method, and or the app? I have airport time capsule as back up.

    Look at and think are the best, there is no app that comes already to know your preferences.

  • Satellite L655 - what is the best method to reisntall ati display driver?

    What is the best method to reisntall ati display drivers as the ati Control Center no longer works.
    It won't work anymore.

    I think that something is going wrong.
    So how to uninstall the entire package and install again.

    Thanks in advance

    Satellite L655 (PSK1JE)

    Go to the page of the Toshiba UE driver.
    Choose the display updated L655 driver
    Download the package, unpack it and run the setup.exe :)

  • No hdmi on my p6320y port. Best method to connect to sony hdtv or home theater?

    I have a sony kdl46ex400 1080 p hdtv.  It is not an hdmi port on my desktop HP p6320y.  What is the best method to connect to my TV or home theater system, so that I can enjoy tv online and movie services and look into hidefinition and having the best sound?

    Hi gilbo225,

    There are a few options you have, according to which ports are available on your TV.

    What is your TV? http://www.TigerDirect.com/applications/SearchTools/item-details.asp?EdpNo=5687623

    If it is your TV, so you can connect your PC using the "PC in ports", which are the VGA and audio port to connect to the back of your TV. He just use a standard VGA cable for the video, and then run the audio cable from the green line to the port of exit at the back of your PC in PC in audio port on the TV.

    Then simply select PC as the video source on your TV.

    You should still be able to get high-definition video via the VGA input as long as you set your display settings on the PC up to 1920 x 1080.

    I have my PC set in place at home in this same configuration, but with a different brand TV. It works very well.

  • Best method for updating CompactRIO data to Server "National Instruments.Variable Engine.1"

    Hi all, I have an OPC Client of third-party I want to use for testing with the CompactRIO. Can I specify 'National Instruments.Variable Engine.1' in the OPC server, create a new item of the mutual FUND, go to a variable and then see its value. I use a CompactRIO and I want to send the updated data that I am acquisitionning of for third-party Client OPC, then, what is the best method? Currently, what works, is that I created a shared variable published to network on the LabVIEW host that I dragged in the CompactRIO project. I've created a small loop increment value every 500ms. I then created on the host computer, a little VI, who issued this national value to "" Instruments.Variable Engine.1". Now, is there a better way to do his? Is it something that can automatically fill in manually the Variable of the CompactRIO motor without publishing the shared inside a LabVIEW application variables? Thank you for your time, best regards!

    Thanks a lot for your replies, Drew,.

    I downloaded the OPC UA API and it will next week.

    Thanks again!

  • Best method to update PowerEdge BIOS/firmware offline

    Hi all

    I read in this topic for a week or 2 and trying to figure out the best method to keep all [reasonably] updated, on an independent network. I was recently watching in Dell Repository Manager and it seems that this could be what I need, but I was wondering what other options I might have.

    It is for the most part on a stand-alone network and especially Linx or ESXi

    What are the best options to keep all components up-to-date?

    See you soon,.

    Tim

    Timbo475,

    Depends on the server you use, but you have a few options. If the server is located in a few years, it probably has the lifecycle controller (F10 at startup). If you access that you can go to the updated platform and use the ISO you create Repository Manager to update with.

    Let me know know the server models that you use, and I can clarify.

  • Best method to "find on Page".

    I'm developing an application with a lot of text and you are looking for the best method to include a search function "find on Page".  Any ideas?

    I managed to make it work with the following example.

    
    
        
            Bacon Finder
        
        
            
            
    /* Content goes here. */

    I filled the div content with 20 points from here:

    http://baconipsum.com/?paras=20&type=all-meat&start-with-Lorem=1

    I tested directly in the browser, but it should work like a WebWorks app as well.

  • What is the best method to manage more than 100 oracle instance?

    our company have run on the 100 on VM Linux oracle instance.

    What is the best method to manage more than 100 oracle instance? use Oracle Enterprise Manager?

    Thank you.

    How your company grow to 100 cases?  There would be some oversight in place as he grew.

    What do you exactly mean by "manage"?  Monitor?  Start/stop?  Performance optimization?  Add storage / Storage?  Backup?

    You may need a mixture of methods / facilities.  Again, it should be obvious that you have something in place already - if you replace it entirely?

    Hemant K Collette

  • Complex detailed image cutting - best method?

    Can anyone suggest the best method to cut the fish from an image like that, leaving a transparent background. I have CS5 (Mac) but could rise to CS6, if there is a better method in there. It's too complex to use the pen tool. I kinda like this to do (in high resolution). Thank you.

    shoal.jpg

    Here are the steps I took. I did a RBG, L * A * B * and CMYK documents. The screenshots show what channel I used what I did for them. In the end, I used apply image with blending mode clarify combine them. Some channels had to be reversed.

    Red RGB:

    Red RGB apply levels:

    Blue RGB:

    Blue invert RGB and levels:

    Brush the black rock and week black brush on the overlay mode:

    L * A * B * B channel:

    L * A * B * B channel with levels:

    L * A * B channel * lightness:

    L * A * B * lightness with levels:

    Yellow CMYK:

    Yellow CYMK reversed with levels:

    New alpha channel master to apply all the other channels, or you can do this right on a black layer mask:

    Apply the image. go though all the channels that you did:

    Do the same for other documents

    Final image with all channels that are applied to the layer mask:

  • Best method to import the external drive?

    I have a LaCie 1 t and you want to know the best method to get these images in LR. The default values are: 'Add' and 'NewPhotos' to 'Moncatalogue '.

    I think I may have more than one catalog and do not know how to combine them. It is advisable to have a single catalog?

    Thanks in advance,

    Mr. Mayor

    There is no "best" method, there are methods that work for you and the methods that do not work for you.

    If the files are on the external hard drive, then 'Add' certainly would work, he leaves photographing in existing records.

    In almost all situations, you want to use a single catalog. (The only situations where you may want several catalogues are if the object of the catalog it is completely incompatible with the purpose of the catalogue 2, for example, business and personal).

    You can combine catalogs by opening one and then use file-> import from another catalog and points to the catalog on the other.

Maybe you are looking for

  • New Apple ID address

    I recently changed my Apple ID to a different email. My phone keeps referring to the old e-mail address and won't let me sign in the new ID so I can upgrade my storage icloud. How can I solve this problem?

  • Satellite C660-258 turns off automatically

    I have a laptop toshiba c660-258, that the problem is when I turn on my laptop, that the led power indicator turns on but after all turns... I alread change ram but not yet tunrning on normally. Is it a hardware problem... what should I do? Can you h

  • How to print Avery 8371 business cards

    How can I print my business cards on models avery 8371?

  • Communication of Labview (OPC client) to the citect (OPC Server)

    Dear members, I want to access the data (from the Labview 8.6) which is on a PC of citect.  As I am not aware of citect, can someone explain me how to do this, if you had experience? Using the mechanism of data taking, I think we can run, but what ki

  • Windows 7 crashes after downloading updates.

    When myspace on computer running internet' freezes at random, does not freeze during execution of game world of warcraft as long as Internet MySpace running a beta app when frozen I type alt/tab and there will be 3 or 4 other screens that I didn't no