Jump to content

Ricardo de Abreu

Members
  • Posts

    12
  • Joined

  • Last visited

Posts posted by Ricardo de Abreu

  1. 4 hours ago, hooovahh said:

    Just an FYI Pi4 isn't officially supported by LINX yet, but several people performed some manual steps to get it working.

    I saw this guide! I was completely decided about BeagleBone but when I saw this guide, and some comparations on speed, and memory, the raspberry is much better....

    On the other hand BeagleBone has much more IO and no need a SD card to boot

    For me BeagleBone is more indicated because of the interaction with the sensors and IOs

    But raspberry is more powerful...

    I don't know what to do...

     

  2. 23 hours ago, hooovahh said:

    So the Pi3 can be deployed to with Linx 3.0 as you may have found.  This is an official toolkit from NI that adds the target in the project and you deploy to it like any other device, and is free.  There is no front panel or UI when running on the Pi so keep that in mind.  But the code can be deployed and set to run on startup so that it runs headless.  There is some licensing to be aware of, specifically it can't be used on any commercial applications.  NI has said that in collaboration with the LabVIEW Community Edition (free as in beer expected release in May) that the Linx toolkit is to also have some kind of new release.  The same people that make the Arduino Compiler also make a Pi Compiler which can be used for commercial applications and has the front panel running on the Pi so you can plug in a monitor and see it.

    Other than the Pi, the MyRIO is really the intended platform for students.  NI has partnered with Universities to offer a discount bringing the price of one I believe to $500.  I'm not a student so I can't see it.  But used ones on ebay pop up all the time from students who bought one for a class and no longer need it.  I picked one up for under $200.  The price of a raw Pi ($30-60) compared to the MyRIO ($500 retail) is a huge jump.  But NI justifies the price with all the stuff you get.  I mean the raw Pi doesn't even come with a case.  But the MyRIO has a real-time embedded Linus OS, an FPGA, built in Wifi, USB network, USB host, a bunch of IO, and the support of NI.  If your project needs an FPGA, and you want to program it in LabVIEW it is by far the cheapest option.  If you don't need an FPGA then it can be seen as over priced.  I'd start with the Pi3 and Linx and see what is possible.  There are lots of online videos and tutorials and the upfront cost is pretty low.

    I saw about myRIO S2....

    But I can't afford one $200 USD is more then R$ 800 BRL while a BeagleBone Black is around R$ 300 BRL much more affordable for me....

    Untill now my choose will be a BeagleBone Black or Green... Because the number of IO pins they have and because there is no need of a SD card to boot the system.

    But the lack of FPGA and the speed of it when compared to RPi that brings me down...

    I would like to see more options and solutions in this way but I don't know if they exist....

  3. 15 hours ago, mcduff said:

    I saw a seminar by the person who created the program. It basically converts LabVIEW code to an Arduino script such that the Arduino can run without being attached to a computer/LabVIEW etc. I believe you can still communicate with a PC if desired.

     

    mcduff

    I saw it on a YouTube video.... Just to convert to Arduino code is not the point...

     

    I was searching about the linx 3.0 and a BeagleBone Black board... That is probably the closest i can get for my needs...

    But as it is an "old" project maybe there is something newer and better boards that are also compatible....

    With this project I saw she can deploy a VI directly to the board and communicate, just like myRIO does...

    Does anyone knows anything newer or better boards (with low budget, please)

  4. 7 hours ago, ShaunR said:

    There is a LabVIEW RIO Evaluation Kit which is a fraction of the cost (has FPGA on board). Alternatively you could use the Arduino with Websockets or HTTP and use LabVIEW to communicate with it. There is also an Arduino toolkit, IIRC.

    I did see the single board RIO, but that IS too much for me. My budget is 10% of the price... 100 USD at most.

    I would like not to use Arduino because I can't deploy the VI too it, and let it run for sometime collecting data stand alone.

    I was thinking of the BeagleBone black or BeagleBone AI or even raspberry pi

    Is there any better option?

    Regards

  5. Hi guys. This semester I'm starting a course system development for control and automation engineering, witch will be based on LabView. Therefore, my University doesn't have a NI hardware, even a MyRIO for us to test our VI and the teacher said that we should test our projects with our own Arduino...

    So, I have a little experience in Arduino and I know the basics for LabView. Now I'm in a point that I know that with Arduino I'll not take the best from LabView. I cannot even deploy a code to it.

    So, there is where my question comes in...
    I'm looking for a new board better then Arduino to use in the classes. I would buy a MyRIO card if I had the money but in Brazil this board is too expensive for me
     Witch one should I get that is closest to myRIO and less expensive than that? I would like to try de deployment of a VI and FPGA..... Is this possible?

    Thanks a lot for the help!
    Regards

  6. On 9/2/2016 at 11:40 AM, Tim_S said:

    In LabVIEW the Help->NI-Industrial Communication for Ethernet/IP has all of the information. There were three VIs I used: open, get/set and close. The important part was using the same assembly ID as configured in the PLC. Otherwise, I just used the shipping examples to test out communication. If you're not worried about speed, and all your data types are simple, then I recommend using tags.

    Tim_S, thanks for help.

    The speed is not the point, as the temperature varies slowly. It is the only data I really need (4 points). I need the oximeter data and some digital inputs, and outputs. not too complicated.

    you said i have to use tags, but Micrologix 1100 does not suport tags, it works with the address (ex. N7:0). I manage it to work with Advanced HMI using the address. Now keeps the problem with LabView.

     

  7. 18 hours ago, Tim_S said:

    Nothing like the fun of a Frankenstein project.

    I've gotten a ControlLogix processor to talk Ethernet/IP with LabVIEW using NI's Ethernet/IP driver (http://sine.ni.com/nips/cds/view/p/lang/en/nid/209676) by setting up remote I/O device in the PLC and a matching assembly in LabVIEW. I was able to get tags to work, but they were too slow (7 msec per tag and I had 100+ tags, and writing collections of tags (tag composed of tags) required expert knowledge that is not well published.

    The other way I would recommend is to use something like KepServerEX which handles the communication and provides an OPC interface to LabVIEW.

    If all else fails (and if cost is an option), the PLC has a RS232 port. If the PC doesn't have a RS232 port, then a USB-to-RS232 is cheap.

     Hi Tim.

    the velocity is not that important. it will be just a data logger of a single point.

    It has to read 4 Temperatures + Oximeter + State and write some actions, as turn on the resistances, close door, etc...

     

    do you still have your project or a sample (with PLC scada). I don't know how to set up remote I/O device in the PLC.

     

    Thanks a lot

  8. Hi Guys, I'm with a trouble here.

     

    Recently we started to get our outdated temperature test cabinet to work, and the best way is to upgrade our PLC. But there cames 2 problems, the biggest is the budget, we do not have any money so we have to work with what we already have, and the second, i'm intern here and there is no one from automation to guide or help me.

     

    Now lets face the problem.

     

    PLC Allen Bradley micrologix 1100

    cards: 1762-IQ16 and 1762-IQ8W6

     

    My first thought is to use Labview to control the PLC, as HMI and data-logger without OPC server to simplify the instalation and cost.

     

    The communication: this is really where the problems begin. It will be done through Ethernet. I could not manage Ethernet/IP driver to work, nor pcc or CIP message...

     

    which is the best way to communicate?

    CIP Message, OPC, or any other i do not know? Do you guys see any problems to make a dataloger without OPC?

     

    Some things I have tryed

     

    Implementation of Common industrial Protocol (CIP) via EtherNet [EtherNet/IP (CIP)]

    https://lavag.org/topic/6104-industrial-ethernet-ethernetip/?page=1

     

    Ethernet/IP Driver for Micrologix 1100

    https://decibel.ni.com/content/docs/DOC-13024

     

    EtherNet/IP Driver for Industrial Communication

    https://decibel.ni.com/content/docs/DOC-4065

     

     

    Thanks for any help

    Ricardo

    PS. Originally posted at: https://decibel.ni.com/content/thread/47497

  9. Hi Guys, I'm with a trouble here.

     

    Recently we started to get our outdated temperature test cabinet to work, and the best way is to upgrade our PLC. But there cames 2 problems, the biggest is the budget, we do not have any money so we have to work with what we already have, and the second, i'm intern here and there is no one from automation to guide or help me.

     

    Now lets face the problem.

     

    PLC Allen Bradley micrologix 1100

    cards: 1762-IQ16 and 1762-IQ8W6

     

    My first thought is to use Labview to control the PLC, as HMI and data-logger without OPC server to simplify the instalation and cost.

     

    The communication: this is really where the problems begin. It will be done through Ethernet. I could not manage Ethernet/IP driver to work, nor pcc or CIP message...

     

    which is the best way to communicate?

    CIP Message, OPC, or any other i do not know? Do you guys see any problems to make a dataloger without OPC?

     

    Some things I have tryed

     

    Implementation of Common industrial Protocol (CIP) via EtherNet [EtherNet/IP (CIP)]

    https://lavag.org/topic/6104-industrial-ethernet-ethernetip/?page=1

     

    Ethernet/IP Driver for Micrologix 1100

    https://decibel.ni.com/content/docs/DOC-13024

     

    EtherNet/IP Driver for Industrial Communication

    https://decibel.ni.com/content/docs/DOC-4065

     

     

    Thanks for any help

    Ricardo

    PS. Originally posted at: https://decibel.ni.com/content/thread/47497

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.