Jump to content

MarkCG

Members
  • Content Count

    143
  • Joined

  • Last visited

  • Days Won

    16

MarkCG last won the day on July 23

MarkCG had the most liked content!

Community Reputation

35

About MarkCG

  • Rank
    Very Active
  • Birthday 10/19/1982

Profile Information

  • Gender
    Male
  • Location
    Bay Area

LabVIEW Information

  • Version
    LabVIEW 2014
  • Since
    2007

Recent Profile Visitors

2,645 profile views
  1. Hi Zofia we talked before but I'll all add my bit here to see if anyone else has comments. EtherCAT is very powerful but so many of those features are held back by the NI EtherCAT master. For example you can get diagnostics on each individual link slave to slave but NI doesn't show that. No official support for topologies other than line or ring. I have gotten it to work with an EtherCAT junction but nothing displays correctly in the project. No hot-connect groups like with TwinCAT. Configuring slaves with CoE is difficult. I use TwinCAT for that. Just the bare minimum is there in the master t
  2. I have seen this too -- looking for RT Get CPU loads.vi in the wrong place, breaking the VI. Not sure how LabVIEW gets into that state but it's been a bug for years. Deleting all RT utility VIs in your code, then adding them again seemed to fix it.
  3. Thank you Rolf and Tim. This crash has seemed to happen exactly one time but maybe with enough logging I'll figure it out. My other option is to just convince people get rid of ZMQ completely for this application and use UDP or TCP connection. The application is just sending data to one server anyways so ZMQ is not really adding much functionality anyways
  4. Hi all, I am running a real-time LabVIEW application that calls into compiled .so file. I am getting occasional crashes of the entire system, and the error log shows a segfault #Date: Mon, Jun 29, 2020 04:59:16 PM #Desc: LabVIEW caught fatal signal 18.0.1 - Received SIGSEGV Reason: address not mapped to object Attempt to reference address: 0x0x4 #RCS: unspecified #OSName: Linux #OSVers: 4.9.47-rt37-ni-6.1.0f0 #OSBuild: 264495 #AppName: lvrt #Version: 18.0.1 #AppKind: AppLib #AppModDate: am I correct in blaming this on the code in the compiled .so f
  5. I remember reading somewhere that the idea behind LabVIEW was to make data acquisition as easy as creating a spreadsheet. That is anyone with some ability to use a computer and understand basic math could create something that worked for their purposes without being a programmer. Gradually more and more complexity and capability was needed and the professional LabVIEW programmer emerged, similar to how professional Excel/VBA programmers arose in the financial industry. But like everything the need for the professional LabVIEW programmer was a product of particular historical circumstance
  6. Is there anything like Xcontrols in NXG? I didn't think there was
  7. Interesting, Beckhoff controller with NI hardware is the inverse of what I did. Going forward I can't see a situation where would use the NI EtherCAT chassis unless I needed to take advantage of the custom FPGA programming or maybe needed the special shock/vibe ratings. I really got shocked when I discovered how many more practically useful features the Beckhoff terminals and EtherCAT boxes have vs the NI C series modules and how cost effective they are. For example 50/60Hz bandstop filtering is selectable on all the analog inputs. This is something you have to implement in FPGA for C series
  8. MarkCG

    Things I Hate

    at least it doesn't crash as much as it used to
  9. Thanks Rolf. The NI EtherCAT master leaves A LOT to be desired but I've successfully got it to work with Beckhoff EtherCAT terminals, even in star topologies. Fortunately I've gotten away from needing to deal with 5 different communication protocols to talk to random devices lately, as I've been able to control what hardware is used . Did you ever develop code in the TwinCAT/Visual studio environment and deploy it to a Beckhoff Industrial PC? How was that?
  10. Hi all, I was wondering if anyone here has had experience doing machine control with both LabVIEW and TwinCAT (not in the same project or machine) . I've been working with Beckhoff hardware and I'm impressed, and I'm curious about how the TwinCAT software compares to LabVIEW as far as ease of use, stability and bugginess, and the power and flexibility of the programming languages available, that is how versatile it is compared to a compactRIO, where it seems you can do pretty much anything. Also how does it compare to LabVIEW+ LabVIEW RT + LabVIEW FPGA software stack from a cost perspecti
  11. should we add Network Shared Variables to this list of left hand scissor features as well?
  12. I'm interested in learning more about it-- can we see the presentation? I have never installed NXG but this sort of thing is what would sell me on it. My superficial impression has been that it's, at this point, LabVIEW with vector graphics.
×
×
  • Create New...

Important Information

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