FieldPoint real-time controller or Ethernet interface

Good Afternoon,
The first feature listed on the FP-2000 product page is:
Stand-alone embedded real-time controller or Ethernet interface for PC-based distributed I/O.
Has anybody successfully implented a FP-2000 as an Ethernet interface for PC-based distributed I/O? In other words, have the FP-2000 act like a FP-1600?
There are some discussion forum threads that dance around the subject but I have not found one that really answers it.
Thanks,
Ed
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Hi edlad,
After playing around with a FP-2010 for a while, I do believe that you need to install LabVIEW Real-Time on the controller in order for it to work, even if you are technically not using it because you are not running a VI/executable on the controller. As far as your issue with installing LabVIEW 8.5.1 on a FP-2000, that is troubling because there should not be an issue doing this at all. In fact, I have personally been able to install LabVIEW 8.5.1 on many FP-2000s. For that issue, I would suggest reformatting the FP-2000 from MAX and try again.
ThinkG: Regarding your question about using a cFP-2220 to communicate with Lookout, I am not sure because Lookout support is handled by our Shanghai branch via email only. However, I do know that you can use that second ethernet port to communicate with another FieldPoint network module (cFP-180x) using the FieldPoint drivers. Here are a couple good KnowledgeBase articles regarding that configuration. I hope they are helpful.
http://digital.ni.com/public.nsf/allkb/F602F6F1B243282686257495007695BB?OpenDocument
http://digital.ni.com/public.nsf/allkb/67F94BB93BCE32CF86257367006B3659?OpenDocument
Thank you for choosing National Instruments.
Aaron Pena
National Instruments
Applications Engineer
http://www.ni.com/support

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Can I run LabVIEW DSC on Fieldpoint real time processor?

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There are two separate questions here. One, can a FieldPoint Real-Time Controller act as an OPC Server, and two, can the DSC Run-time engine be downloaded into the FP-20XX controller. The answer to both questions is no.
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Could u plz help me to find simple example for how to save data file in a spread sheet or any other way in the real time controller for Sbrio 9642 using memory or usb flash memory

Could u plz help me to find simple example for how to save data file in a spread sheet or any other way in the real time controller for Sbrio 9642 using memory or usb flash memory

Here are a few Links to a helpful Knowledge Base article and a White Paper that should help you out: http://digital.ni.com/public.nsf/allkb/BBCAD1AB08F1B6BB8625741F0082C2AF and http://www.ni.com/white-paper/10435/en/ . The methods for File IO in Real Time are the same for all of the Real Time Targets. The White Paper has best practices for the File IO and goes over how to do it.
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Is it possible to use the video output of a PXI Controller running RTOS to display messages from a LabVIEW RT application ? According to the documentation, it seems that the use of the video output is only possible for PXI Controllers running Windows XP.
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Hi Yann,
The situation seems a bit confusing as in the link you've given above using the local monitor from a pxi labview rt system as the HMI without a pc attached, two messages (here and here) say that it is possible to display an image on the video output of a PXI RT controller using a function of the NI-IMAQ librarey (namely, the IMAQ RT Video Out VI) !
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Check if real-time controller is connected to a PC

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I don't think any of the VIs on the Real-Time palette are what I'm looking for, so I tried opening an application reference and looking at what info I could get via property nodes. It appears that there is some promise here, I might be able to make do with the "Remote Panel:Connections To Clients" or "NI Security:Nobody Logged In?", but neither of these can be accessed remotely. I glanced at the invoke node, but nothing popped out at me, and I'm not really trying to invoke anything anyway so that seems like the wrong path. I'm thinking that my only option is to create a standalone app that I can pre-deploy and that my PC applications will have to call that asynchronously via remote app ref? I've never done that before, but I would imagine it is possible. It just seems so complicated for such a simple operation...why isn't this built in to LV? Am I missing something?
I apologize if this is a duplicate thread; I tried searching for the topic but didn't feel like I found the right keywords.

You are correct -- I do not understand what you want to do. However, now that I have this out of the way, I'm going to "take a guess" and then say "I don't think you can do that".
I'm dealing with a 1 PC/1 PXI system, where the PC and PXI share a private network (so there's never a "worry" about multiple PXIs). However, I want to be able to "control" what code the PXI is running, as I have multiple PC codes that are paired with multiple PXI counterparts. This turns out to be a somewhat difficult task (that I haven't fully figured out), one "piece" of which is that I haven't figured out how to "know" what the PXI is running at any given time.
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Bob Schor

TCP/IP Connecting with Real Time Controller

I have a host running Labview on a windows XP and a realtime embedded controller on a pxi chassis that acts as the server. When the realtime is started it automatically goes into listen mode and listens for a connection from the host. The host opens a connection. After a valid connection is open the Real-Time side goes into a TCP_Read and the host can then send commands that the real time processes and sends to the FPGA on the pxi-chassis.
Now the problem I'm having is how to handle the case when a TCP connection is lost. I can have the TCP_Read on the real-time error on a time out and then go into a listen mode but this isn't very logical because then the host will have to reconnect each time a time out occurs. So if I make the TCP_Read timeout be infinite and if the connection is lost (let's say I unplug the ethernet cable and re-plug it back in) then I cannot recover from this and the Real-time will need to be re-booted.
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Is there any way to prevent an infinite loop that needs a reboot and at the same time prevent the host from reconnecting every time there is a timeout?

Hi SJeane,
I apologize for taking so long to respond, but I wanted to test this on my end. In doing so, I realized that using the RT Reboot Controller.vi after the connection is lost does not work because the message to reboot cannot be relayed to the target without communication! Thus, to solve this problem, we have to approach it a different way. You mentioned that you tried programmatically clearing errors, but did you try to reestablish connection after clearing the errors? I tested this on my end with a FieldPoint controller, and the attached VIs resumed operation even after unplugging/replugging the Ethernet cable (no reboot). Will this solution work for you?
Peter K.
National Instruments
Attachments:
Reestablish.zip ‏39 KB

MAX support of SNTP for Real-time controllers

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Thanks,
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Hi craige,
It looks like SNTP synchronization is not fully supported for PXI systems:
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How to get the real time controller download file for cRIO 9074

Hello
I am a beginner of LabView. Now I do a project in school with cRIO 9074.
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Wait for your help, and thank you for your help very much.
Solved!
Go to Solution.

Even if you format the cRIO system it should be found by the MAX and by opening the Software config you can reinstall the system files assuming that they are installed on the connecting system (PC).
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Hope it helps
Christian

North atlantic resolver(Model No:75DS2-1B1B1FC0) labview driver for NI real time controller

Hi all,
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Regards,
Rathnam.M(CLAD),
Nokia Siemens Network

I know it has been a while but NAI has had the LabView RT driver for a while now. The standard Window drivers now contains all the drivers which includes the VISA driver and the Windows drivers for 7 and XP.Using the stanard Windows driver will require the standard DLL.
If you are using the standard LabView running on Windows 7 or XP with NI VISA software layer you will need the VISA driver. The VISA driver's low level register operation follows NI method of talking to the board in a PC or in a PXI chassis. Installing the proper driver is the key to getting the board to work. If you allow Windows OS to pick the driver to use you are in trouble and it is going to a very long day of frustration. Go into the Windows device manager and recognizing an entery that represents the NAI board should not be difficult to find. The entry should have yellow question mark indicating that something has been installed but not really working. If the Windows device manager sees the board correctly and MAX does not see the board at all then you have the wrong driver. Using the device manager and cherry picking the right driver from the list of driver provided in the NAI Windows driver offering is the way to get it working.
Once the driver is loaded the VISA has the API library in import form and there is a VI that opens and reads the serial with other information.
Using LabView RT requires additional files that are provided in the NAI driver which is now available.
The API is in a VI form so you may need to locate the VI you need then store in a folder that is more convenient to find.
I have an outline that properly step through the method to progam the D/S models that you have. Please feel feel to request the program outline. JOEA
Einstein proved by taking time in thinking about a problem he proved there is no such thing as gravitational pull. Therefore, given enough time and thought a problem can be solved. If the problem is not solved then there has not been enough thought.

FieldPoint Real-Time ftp security

I am using FP RT as a datalogger, so I want multiple computers have access to the files through FTP. Nevertheless, I don't want any machine can delete the files, the labview application does itself. How can I configure the FP security so any machine can retrive the text files, but cannot delete them?
Santiago Orellana V.
HighLights - National Instruments Ecuador

hl-ni,
As of now there is no way to allow read-only access to the FTP server. However, you can lock the FTP server through Measurement & Automation Explorer, which will only allow access by someone who has the password you set.
Ames
Applications Engineering
National Instruments

How do I generate a compiled app with a user interface running real-time?

Hi everyone,
I've developed a simple application that uses a PXI chassis to run. It toggles some discretes and does some simple things, but it doesn't really have any "real-time" requirements. We're just using the PXI chassis because we have it and we need the discrete I/O.
My question is this - how can I convert this application to a compiled real-time app and yet maintain the front panel on the local PC. LabView appears to simply do this for me. I am connected to the real-time target via ethernet. When I compiled the program, it puts it in the target's startup directory, but how do I run the front panel from the local PC?
Thanks,
Jason

Hi Jason,
Below are some links that should get you started with deploying an application onto your real-time target and then controlling it from a PC that does not have the LabVIEW Development environment:
http://digital.ni.com/public.nsf/websearch/C90410C685CFF89786256C24005AC027?OpenDocument
Launching code on the RT target:
http://zone.ni.com/devzone/conceptd.nsf/webmain/7D7CFAFF379531B086256AC70058812B?opendocument&node=1...
Deploying and launching a real-time app:
http://zone.ni.com/devzone/conceptd.nsf/webmain/9ac4955881bd7b4d86256d0b0061dd1c
Application Builder and RT PXI controller:
http://zone.ni.com/devzone/conceptd.nsf/webmain/81b6674f3556599b862568cf005d26c6
RT good programming practices (use RT communication wizard for easy implementation):
http://zone.ni.com/devzone/devzoneweb.nsf/Opendoc?openagent&E4C4DCD9C00295A186256B5100665BF5
RT Communication Wizard:
http://zone.ni.com/devzone/conceptd.nsf/webmain/a6f17ee4adcab99686256d5e0053e210
I would suggest going through these tutorials and documents, they should provide you with what you need to get started. Please don't hesitate to ask any questions that you have a long the way.
Bryan Snarr
Field Engineer
Northern California
National Instruments

End of memory. Labview + Real time module + Compact Field Point 2120

My name is Michele Ciampichetti, I'm writing from Italy.
Frist of all, excuse for my english.
This is my first experience with Labview, and the application is not so easy. We use Labview 8.2.1
Our system is costituited by two different parts: there is a Compact Field Point 2120 as remote target whit some I/O card, and a PC used to releave data and memorize them (host).
The comunication between the two targets is performed by ethernet lan with Shared Variables not bufferized and not real-time fifo.
The problem is this: the sistem requires a big number of Vis and Variables (about 20 Vis per target and 50 variables localizated in 5 different librarys all in the remote target), and it should store data, acquisited by the FieldPoint, on a database (SQL Server 2005), one time per minute. This storage is made by Labview Database Connectivity Toolkit, and it work correctly. The problem is an excessive consumption of RAM on the PC.
The question is this: The use of many shared variables or vis, bring the memory to always grow? I try to explain myself. When we start our application, after the first minute and registration on the database, the memory grow of approximately 1,3 Megabytes. This is repeated every minute, and after approximately two ours, Labview break down and display "Not enought memory".
We look the on-line help for one solution, and we have found that the variables (local and shared), the concatenate funcion, the array and Vi indicators copy in memory their older value when updated. Is possible that this is the cause of our problem? There is a method to avoid it? How labview uses memory? It is possible set it up for not maintain older value in memory?
We need to run the application up to 4 days for complete its work, is a long test for a climatic room.
We're looking forward to hearing from you.
Best regards
Michele

centerbolt is correct, you can't load a .exe or even run a program on the fieldPoint controller unless you have the Real Time module. However, that does not mean you can't use your FieldPoint bank without the Real Time module.
From LabVIEW for windows you can make calls to the fieldpoint IO using the fieldpoint read/write functions.
This program runs on the PC not the FieldPoint controller. If you loose network connection to the fieldpoint, your program will loose connection to the IO. For many data logging applications this type of arrangement can work just fine. However, if this is the only type of application you are ever going to run, then you may as well not buy the Real Time controller for your fieldpoint but the network controller only.
If your application requires more reliability, and/or greater determinism than can be achieved by running a program on windows, then you should use the LabVIEW Real Time module and develop a program that can run down on the FieldPoint controller independent of windows.
Message Edited by StevenA on 07-22-2008 04:14 PM
SteveA
CLD
FPGA/RT/PDA/TP/DSC
Attachments:
fp pallet.PNG ‏6 KB

Real-time NI 9239

Hi All,
I have a DAQ 9172 with two NI 9239 module. I would like to measure 3 stator current and 3 stator voltage and also the rotor speed (an analoge input) of an AC machine to estimate the electromagnetique torque in real time. The estimatior is an open loop one but it needs some feedbacks and also function transfer as I have used in Matlab Simulink. I have control and simulation and interface toolkit but not real-time toolkit. Please help me haw can I do that in real-time.

Hi,
The Cdaq-9172 are not a real-time controller, if you will use it in real time mode (with determinitic loop) you need have a computer with a real time OS.
Windows are not a real time OS, but you can optimize it with your application.
You can see below differents notes about real-time.
http://zone.ni.com/devzone/cda/tut/p/id/3938
http://zone.ni.com/devzone/cda/tut/p/id/2111
http://zone.ni.com/devzone/cda/tut/p/id/5038
Regards,
Christophe S.
FSE East of France І Certified LabVIEW Associate Developer І National Instruments France

What are the limitations of using labview 8.5.1 developers suite verses a real-time module in field point applications?

What are the limitations of using labview 8.5.1 developers suite verses a real-time module in field point applications? Can an exe. be loaded onto a field point controller or does the controlling program have to reside on a PC for example?

centerbolt is correct, you can't load a .exe or even run a program on the fieldPoint controller unless you have the Real Time module. However, that does not mean you can't use your FieldPoint bank without the Real Time module.
From LabVIEW for windows you can make calls to the fieldpoint IO using the fieldpoint read/write functions.
This program runs on the PC not the FieldPoint controller. If you loose network connection to the fieldpoint, your program will loose connection to the IO. For many data logging applications this type of arrangement can work just fine. However, if this is the only type of application you are ever going to run, then you may as well not buy the Real Time controller for your fieldpoint but the network controller only.
If your application requires more reliability, and/or greater determinism than can be achieved by running a program on windows, then you should use the LabVIEW Real Time module and develop a program that can run down on the FieldPoint controller independent of windows.
Message Edited by StevenA on 07-22-2008 04:14 PM
SteveA
CLD
FPGA/RT/PDA/TP/DSC
Attachments:
fp pallet.PNG ‏6 KB

Cannot run Simulink dll at the same time as running real-time target VI

Hello
What I am trying to do is run a model dll created in Simulink to control some servo's through a CompactRio 9014.
At the moment I have managed to create three VIs
1) In the FPGA target that performs the PWM on a desired channel
2) That takes the value of a network variable which contains the position required and feeds that to the 1st VI
3) A VI that runs on the host computer that modifies the value of the network variable to change the position
I can get these three VIs working and the servo controlled, but when I try to update the value of the network variable using the simulation, by deploying the simulation to the RT target and running it, it says
'Access denied: This target is already in use by another project or host computer.'
I assume as this is because the project is already connected to the cRio, so I disconnect and am able to deploy the model files.
However when I try to run one of the VIs in the RT Targer along with the simulation I get the error:
'This VI is downloaded on the target but is not present in the project you are attempting to deploy. All VIs on the target will be closed unless you choose to add the missing VI to the project.'
With a large number of missing VIs...
Would I be doing this wrong, i.e. is there a much simplier way to control the FPGA inputs using the simulation, or is there something I could have missed?
Thanks
Geoff
Solved!
Go to Solution.

Hi Geoff,
It seems that you are on the right track except for some concepts that I
want to review:
A CompactRIO or cRIO has 3 different components:
1)
Real-Time controller (in your case a 9014)
2)
FPGA backplane (this could be a 9102, or a 9103, 910x,
etc)
3)
I/O modules (like a 9401, 9263, etc)
When you write an application for cRIO you usually have three different VIs:
1)
Host VI – This VI is used as a user interface and runs in
Windows (under “My Computer” in the LabVIEW project) This VI is optional because
you might want to run the cRIO headless.
2)
RT VI – This is the VI that runs in the cRIO controller
(in your case the 9014). This VI lives
under the cRIO target in your LabVIEW project.
3)
FPGA VI – This is the VI that runs in the cRIO
backplane like a 9102. This lives under
the cRIO >> FPGA target in the LabVIEW project.
The ONE application that I was talking about in my last post is for the RT
VI. There can only be one RT VI that
gets deployed. If you want to run
multiple VIs in the cRIO RT, then you need to run those VIs as subVIs of one
top level VI.
LabVIEW Simulation Interface Toolkit (SIT) has a tool called the SIT
Connection Manager that creates two of these three VIs for you (the RT and the
Host VIs).
Please refer to the following link about the SIT Help. Go to the How To section. It is organized in a kind of step by step
tutorial.
http://zone.ni.com/reference/en-XX/help/371504D-01/
In your case it is going to be a bit more difficult because of two things:
One, you are using a VxWorks target.
Two, you want to use your own FPGA VI.
Let’s address each one of them:
1)
VxWorks target- To use the SIT Connection Manager you
need to use a DLL not an OUT file, even though you need the OUT file for the cRIO VxWorks target. The reason is
that this tool needs to read the compiled model to know what the
parameters, signals, inports and outports of your model are. Because the tool runs in Windows you cannot
open an OUT file (meant for a different OS) so you need to give it a DLL.
For this reason you will need to compile your model file into an OUT
file and a DLL. Once you give a DLL to
the Connection Manager and you select your cRIO as the execution target, keep
doing the rest of the steps as the help says.
LabVIEW will identify that you are using a VxWorks target and will
download the OUT file to the cRIO.
2)
Custom FPGA VI – LabVIEW SIT has some FPGA bitfiles
(compiled FPGA VIs) that it can use.
When you open the SIT connection manager and go to the Hardware IO
mapping section it asks you to select the bitfile. If you want, you can select one of the
shipping bitfiles but iIf you
want to use your own, then you will need to do some changes to your FPGA VI , recompile it and
save the bitfile in a specific location with a specific name.
Please refer to the following link for
instructions on how to create your custom FPGA VI:
http://zone.ni.com/reference/en-XX/help/371504D-01/lvsithowto/sit_h_custfpga/
What I would suggest is that you start with a very simple example and using
one of the shipping bitfiles. Look into
the following path for a very simple Sine wave generation example:
C:\Program Files\National Instruments\LabVIEW 8.6\examples\Simulation
Interface\Sine Wave
Because you are running a VxWorks target you will need to recompile this
example model sinewave.mdl to an OUT file.
To get a better understanding of what SIT does you might
want to check some quick videos. Go to
http://sine.ni.com/nips/cds/view/p/lang/en/nid/11763 and under the
resources tab there are two videos called Demo - <something>...
Hope this helps and let me know if you have more questions.
Ricardo
National InstrumentsSystems Engineering

FieldPoint real-time controller or Ethernet interface

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