How does Labview support redundancy?

I have a control system and Labview will act as the means of control/monitoring. However, I want to have a primary and secondary computer with duplicate system setups. How does Labview support this type of redundancy such that if the primary goes down, the secondary will take control seamlessly.

Hi,
LabVIEW has many capabilities that can be combined to create a very robust redundant system. Some of these features include the following:
Archiving databases periodically
Monitoring a process on a remote machine
Executing an application on the backup when the primary has failed
The most straight forward method of implementing the monitoing is to use discrete memory tags to create a heartbeat. When the heartbeat on the Primary machine has stopped, the backup should take over and begin execution.
If you have specific questions about how to implement this, feel free to call support by going to www.ni.com/ask.
Regards,
Mike

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HELP!!! Does LabView support a thin client or dumb terminal (diskless workstation) type of deployment

Hello,
Does LabView support a thin client or dumb terminal (diskless workstation) type of deployment? I have a need to run LabView on some sort of dumb terminal / diskless workstation. If someone has deployed LabView in this matter, please provide me all the details on how this was accomplished (software, hardware, etc.)
Thanks

Sorry, can't call you.
My first suggestion has nothing to do with LV. It is simply connecting as a remote client to the windows server and controlling the windows session on the server.
My second suggestion involved writing a program which will contact the PLCs directly using Modbus and get the data from them. As mentioned, you can find some Modbus client implementations for LV by searching the web (or, if you have LV 8 and the DSC module, I think it should come built in).
My third was writing 2 programs - one would run on the server and one on the client\s. The server program would be responsible for sending the data to the client and the client would be responsible for interacting with the user and sending the appropriate messages to the server. I already gave you pointers on what to search for (the example finder can be found by going to Help>>Find Examples and the site can be searched from the box at the top of the page, but make sure you don't search just the forums).
In both cases, you would need to design the program and the interface for the user.
Wi-Fi also has nothing to do with LV and is simply a way to form a wireless network. Any mobile device would almost definitely have support for it and buying an access point to form the wireless network is easy and cheap.
To learn more about LabVIEW, I suggest you try searching this site and google for LabVIEW tutorials. Here, here, here and here are a few you can start with and here are some tutorial videos. You can also contact your local NI office and join one of their courses.
In addition, I suggest you read the LabVIEW style guide and the LabVIEW user manual (Help>>Search the LabVIEW Bookshelf).
Try to take over the world!

How does java support the concept of destructor?

How does java support the concept of destructor?

@KunalSurana: before you flood the forum with basic questions, do us a favour and read.
[Sun's basic Java tutorial|http://java.sun.com/docs/books/tutorial/]
[Sun's New To Java Center|http://java.sun.com/learning/new2java/index.html]
Includes an overview of what Java is, instructions for setting up Java, an intro to programming (that includes links to the above tutorial or to parts of it), quizzes, a list of resources, and info on certification and courses.
jGuru
A general Java resource site. Includes FAQs, forums, courses, more.
JavaRanch
To quote the tagline on their homepage: "a friendly place for Java greenhorns." FAQs, forums (moderated, I believe), sample code, all kinds of goodies for newbies. From what I've heard, they live up to the "friendly" claim.
[Yawmarks List|http://forums.devshed.com/java-help-9/resources-for-learning-java-249225.html]
[The Java Developers Almanac|http://www.amazon.com/exec/obidos/tg/detail/-/0201752808?v=glance]
[http://javaalmanac.com|http://javaalmanac.com]
Bruce Eckel's [Thinking in Java(Available online.)|http://mindview.net/Books/DownloadSites]
Joshua Bloch's [Effective Java|http://www.amazon.co.uk/exec/obidos/Author=Bloch,%20Josh]
Bert Bates and Kathy Sierra's [Head First Java|http://www.amazon.com/exec/obidos/tg/detail/-/0596004656?v=glance ]
James Gosling's [The Java Programming Language|http://www.bookpool.com/sm/0321349806]
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How does NetWeaver support FIPS in java part?

As we know, default JDK doesn't support FIPS in the SSL/TLS socket.
There are 3rdpart soft, like certicom, bsafe can support this.
And in the opensource, NSS + jdk, seems can be a solution.
Here, just a question, how does NetWeaver support FIPS in java part? Is there an internal implementation?
Thanks.
Message was edited by: Andy Silvey

I'm not aware of any. The library is backwards compatible so you should be able to replace an existing SAP Cryptographic Library with CommonCryptoLib. The Crypto Kernel implementation seems to exist only for AS ABAP. Maybe someone working on security at SAP can comment, I will ping the Security space to get their attention.

How does BW support Balanced Scorecard?

Hello,
how does BW support Balanced Scorecard? Is it linked with CPM?
thanks for input.
Best regards.
Kern kern

hi Kern,
check
http://help.sap.com/saphelp_sem60/helpdata/en/1b/3131375fc9342ae10000009b38f839/frameset.htm
The Corporate Performance Monitor accesses data that is stored in the SAP Business Information Warehouse (SAP BW)
http://help.sap.com/saphelp_sem60/helpdata/en/70/18d437d4af0a21e10000009b38f8cf/frameset.htm
The measures, on which you report with the Balanced Scorecard function, are defined by means of the Measure Builder function, and they are linked with technical key figures of the SAP Business Information Warehouse
http://help.sap.com/saphelp_nw2004s/helpdata/en/7a/72663ca0a9272ae10000000a11405a/frameset.htm
(navigation through left nodes)
http://help.sap.com/saphelp_nw2004s/helpdata/en/6f/827439a551d61ae10000000a114084/frameset.htm
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I wanted to know how does technical support work via icloud and is there any new technology out that helps providing technical support

i wanted to know how does technical support work via icloud and is there any new technology out that helps providing technical support?

basically I’m doing a project were I wanted to find out if there are recent technology out that provides technical support for example they do it with remote access but is they any new ways that they can support us and just wanted to find out if icloud gives technical support then how?

Does LabVIEW support the SNMP (Simple Network Management Protocol)?

I looked at LabVIEW 2014 online help for some info on SNMP.
A problem was posted in 1996 and updated in 2008.
Does LabVIEW Support the SNMP (Simple Network Management Protocol)?
http://digital.ni.com/public.nsf/allkb/4CD3625A939A77DE852564050047D3BD
This was addressed to LabVIEW version 4.
What version are we up to now?
Version 14?
One solution offered was to get the SNMP VI from Viodia.
Why should I have to spend another $1,000 for a VI from Viodia after spending $5,000 for LabVIEW Professional?
Come on National Instruments, offer up SNMP to go with your professional package.
There seems to be a lot of chatter about SNMP on the forums.
I’m sure a lot of customers would be happy to have an official LabVIEW VI for SNMP.

I find it unreasonable to expect that LabVIEW supports out of the box every network protocol that has ever been invented under the sun. You may find SNMP to be the most important protocol on the world but for most programmers it is a niche protocol that they may have heard of but never will happen to come across in their applications. It's in fact pretty low level for a very specific purpose of managing network connected resources.
On the other hand it is not rocket science either so can be implemented by someone with enough determination on top of the native network interface functions in LabVIEW. Is it a lot of work? Yes, you bet! Is it worth 1000 bucks! If you really need it and your own work hours cost anything more than a few cents per hour, most probably too! If you can live with an implementation that is supporting many but not all features of SNMP, the link on LAVAG is a very good and nice one.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Does LabVIEW support Mobile and Wireless Protocols?

Does LabVIEW support these protocols;
3G     GSM        PHS
4G     HCSD        TACS
CDMA     HSDPA        TDMA
CDMA2000     iDEN        TD-SCDMA
EV-DO     Mobitex        UMTS
FDMA     NMT        WCDMA
GAN     PCS        WiDEN
GPRS     PDC        WiMAX
If it does (some or all) of these protocols, what do I need to install to get VIs supporting these protocols (I mean which packag/ toolkit etc contians supporting VIs/ functions etc)?
Thanks for your help!
Have a very pleasant day!

Most of these protocals are OS-supported. LabVIEW doesn't have lower level interface VIs.
For instance LabVIEW doesn't build a TCP/IP stream with header and stuff, the OS TCP/IP stack deals with that stuff.
For testing the quality of such network there are special hardware (most PXI) and software solutions.
What is it that you want to achieve?
Ton
Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
Nederlandse LabVIEW user groep www.lvug.nl
My LabVIEW Ideas
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Does LabVIEW support USB 2 interface?

I need to transfer data from the USB port 2 but I'm thinking of using LabVIEW for interfacing. Does LabVIEW support USB2?

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Metaprogramming - does LabVIEW support reflection?

Does LabVIEW support reflectivity in metaprogramming?
By this I mean, can LabVIEW programatically generate LabVIEW code? Can one write a VI whose output is other, new VIs?
I think this amounts to a question of whether there is a way to create data having the same type as VIs do, for example by writing binary files. I've looked at .vi files in a text editor, and there is not much I can make sense of.

tst wrote:
Ben wrote:
Of course you may be the FIRST person to harness that critter.
Definitely not the first. NI created scripting so it could be used (for the vision builder, if memory serves) and use it they do. When you use LVOOP, for instance, you use scripting every time you create an accessor VI. I'm sure there are other places where it's used and it looks like NI is making it more organized. 8.6 has a folder of VIs which seem to translate XML into scripting commands. I haven't looked into this, but I assume this was done because it's used somewhere, not because NI felt like playing around.
What can I say?
Yep!
Ton wrote "(I always had the impression that at least this code makes usefull use of scripting) "
So NOW what can I say?
So little apetite, and so much humble pie to eat.
Ben
Message Edited by Ben on 01-05-2009 01:59 PM
Ben Rayner
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Rayner's Ridge is under construction

Does LabVIEW support Multi Document Format

Hi
I had a doubt that does LabVIEW support Multi Document Format like Microsoft Word, execel etc.
please reply me with some solution if anyone has
With Regards
Avni

Yes, I know very well what MDI is, I just don't know what Multi Document Format is
Programs like word, excel, etc support reading/writing of files in multiple formats (e.g. *.doc, *.rtf, *.txt, etc. for word or *.xls, *.csv, etc. for excel), so the question could be along these lines. I guess we have to wait for the original poster to come back to clarify.
LabVIEW Champion . Do more with less code and in less time .

Does Labview Support a Hierarchical VHDL Instantiation into Labview Clip Nodes?

Hello,
Does Labview Support a Hierarchical VHDL Instantiation into Labview Clip Nodes?
I followed the available help, and called out the top-level VHDL in my XML file. Unfortunately, my lower level VHDL components are being read as a Black Box and I am getting an error during compile. So, what must I do to instantiate hierarchical VHDL code into a clip node?
Solved!
Go to Solution.

Yes, but you need to include the paths to all of your VHDL files in your CLIP XML. This tells LabVIEW which source files to copy into the compilation directory. Here is an example (which assumes the source files are in the same directory as the XML):
<CLIPDeclaration Name="NI Example CLIP">
<FormatVersion>1.0</FormatVersion>
<CLIPVersion>1.0.0</CLIPVersion>
<HDLName>ExampleClip</HDLName>
<ImplementationList>
    <Path>ExampleClip.vhd</Path>
    <Path>SubComponent.vhd</Path>
    <Path>Fifo32.ngc</Path>
    <Path>ExampleClip.ucf</Path>
</ImplementationList>

How does labview create a hyperlink in a web page?

Hi
I was wondering, how does labview create a hyperlink in a web page?
Thank you.

Hi,
What do you wish to do?
The most primitive way is to generate a .HTML file.
Type your HTML codes (Using string constant) and save it using "Write Chars To File.vi" using a filename with extension .html
Hope I am addressing your question.
Cheers!
Ian F
Since LabVIEW 5.1... 7.1.1... 2009, 2010
依恩与LabVIEW
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How does labVIEW use ActiveX controls?

How does labVIEW use activeX controls?
I recently wrote an activeX control in VB and noticed that it would not work if the control was set so that its properties could not be set in ambient mode. This may suggest that labVIEW uses some activeX controls only in ambient mode.
Is this the case or are there more complexities?

Dan,
Which version of LabVIEW do you have?
As per the KnowledgeBase bellow, in versions of LabVIEW prior to 5.1 you would get errors accessing the ambient properties.
ActiveX Controls in LabVIEW 5.0.1 Containers Cannot Access Ambient Property
Do your controls use the Ambient.UserMode to determine when the control is being used in a development environment? When embedding ActiveX controls into a container on the front panel, by default, the ActiveX control generates and responds to events, i.e. it is running, even when LabVIEW is in edit mode.
Right-click an ActiveX container and select Advanced»Design Mode from the shortcut menu to display the container
in design mode while you edit the VI. In design mode, events are not generated and event procedures do not run. The default mode is run mode, where you interact with the object as a user would.
Information can be found in the LabVIEW help files
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Does labview support dll which has sub functions that are static functions?

Dear all,
I wrote and compiled a C function into dll to be called by labview. The function calls a sub function. It works fine if it is a normal sub function. However I see that if I declare the sub function to be static, labview will crash. So is it that labview does not support static function in dll?
Best,
Miao

A static function simply means that it is local to the C module that defines it and can't be seen from other C modules in a library. It should not change anything else about how it works.
So in conclusion it should not make a difference in if it crashes or not but only create possible problems in linking the library. It seems extremely likely that you have another problem in your library that gets somehow triggered more easily when you compile your code with the static functions, but it should not have to do anything directly with the fact that you have static functions in itself.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

How does Labview support redundancy?

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