[Etherlab-users] "Master0 dead" and unable to check fro masters/slaves
Andreas Stewering-Bone
andreas.stewering-bone at gmx.de
Wed Sep 28 11:25:11 CEST 2022
Dear Henrik,
First goal is to get a clean system setup.
IgH supports OpenSuse system from the official side (Packages are
available
under https://build.opensuse.org/project/show/science:EtherLab)
I, a member of the IgH, supports Debian privatly.
Ubuntu is known to run, but it maybe it is more complicate than the
other system.
I have created some Raspberry images with Etherlab preinstalled on the
standard kernel
Have a look at
https://www.stewering-bone.de/index.php/s/R7MME7b5Yf7B83x
That are images like the official raspberry images, please read the
official documentation how to install it.
Get the MAC of your interface via ip a
You only have to modify /etc/ethercat.conf, Add MAC and select generic
driver
Start the master via sudo systemctl start ethercat
Check bus via sudo ethercat ma ans sudo ethercat sl
Second step should be write and run a minimal c example to access the
bus, see the ethercat master examples
Third step is to get matlab running, but this is a little bit more
complicated.
Best regards
Andreas
Am Dienstag, dem 27.09.2022 um 17:38 +0200 schrieb Henrik Barie:
> Hello Andreas,
>
> when using "dmesg" I dont get any EtherCat-related messages.
> Usually the last messages are something with EtherCat but this time
> there are none.
> I dont know how to run the Master with the standard kernel.
> Im using Ubuntu 22.04 with a Realtime Kernel in a Beta-Version. The
> header file is called linux-headers-5.15.0-1020-realtime, if that is
> any help.
> I couldnt get Realtime Kernel Patches for Ubuntu 18.4 or 20.4 to
> work, like they were recommended to use in some installation guides I
> found, so I hoped with using this Realtime Kernel it would finally
> work.
>
> The Main-Goal of my Project is to get Etherlab + Etherlabmaster
> running on a Linux PC like a Labtop or Desktop-PC and to be able to
> control a Beckhoff Unit with it. But if I cant get this to work, I
> guess I have to convince my Professor to buy a Raspberry Pi 4 :)
>
> "You can generate the code on any other system you like (Windows
> included), transfer the code to the control system and compile it."
> How can I install the etherlab-blockset in Matlab on a Windows PC/
> what files do I need for this?
>
> Also so thank you very much for your help so far, I know Im asking a
> lot of "simple" questions since Im a complete beginner at Linux.
>
> Regards
> Henrik
>
>
> Am 2022-09-26 08:50, schrieb Andreas Stewering-Bone:
> > Dear Henrik,
> >
> > There is something wrong on kernel module level.
> > The master module does not fit to your running kernel.
> > Please have a look at "dmesg".
> >
> > You can run the master with the standard distribution kernel to get
> > in touch with ethercat.
> > But note: actually it is not possible to tun ethercat on a strict
> > uefi safe boot enviroment with signed modules, because the ethercat
> > master is a out of tree module.
> >
> > I do not know the actually state of your system, so it is difficult
> > to decide for the next step.
> >
> > To start take a Raspberry Pi 4 with raspbian, follow the package
> > instruction and you will get a running ethercat with the default
> > kernel.
> > For many control systems this will be a good starting point for a
> > project.
> >
> > Matlab installations on Linux is getting more difficult on each new
> > matlab release, but
> > there is no need to for a matlab installation an the control
> > system.
> > You can generate the code on any other system you like (Windows
> > included), transfer the code to the control system and compile it.
> > You only need to install the etherlab blockset on both systems.
> > Please have a look at
> > https://gitlab.com/etherlab.org/etherlab/-/blob/master/README
> > Section Power user
> >
> > Best regards
> >
> > Am Dienstag, dem 20.09.2022 um 13:32 +0200 schrieb Henrik Barie:
> > > Hello Andreas,
> > >
> > >
> > > I installed DKMS for Ubuntu 22.04 with
> > > "sudo apt-get update" and "sudo apt-get -y install dkms".
> > > I can now find several dkms directorys and files.
> > >
> > > After I rebooted the system I tried to start ethercat-master with
> > > "sudo
> > > systemctl start ethercat", but I got an errormessage:
> > >
> > > Job for ethercat.service failed because the control process
> > > exited with
> > > error code.
> > > See "systemctl status ethercat.service" and "journalctl -xeu
> > > ethercat.service" for details.
> > >
> > > "journalctl -xeu ethercat.service" gave out this:
> > >
> > > Sep 20 12:34:15 ec-Lenovo-V15-G2-ITL ethercatctl[5838]: modprobe:
> > > ERROR:
> > > could not insert 'ec_master': Unknown symbol in mod>
> > > Sep 20 12:34:15 ec-Lenovo-V15-G2-ITL systemd[1]:
> > > ethercat.service: Main
> > > process exited, code=exited, status=1/FAILURE
> > > ░░ Subject: Unit process exited
> > > ░░ Defined-By: systemd
> > > ░░ Support: http://www.ubuntu.com/support
> > > ░░
> > > ░░ An ExecStart= process belonging to unit ethercat.service has
> > > exited.
> > > ░░
> > > ░░ The process' exit code is 'exited' and its exit status is 1.
> > > Sep 20 12:34:15 ec-Lenovo-V15-G2-ITL systemd[1]:
> > > ethercat.service:
> > > Failed with result 'exit-code'.
> > > ░░ Subject: Unit failed
> > > ░░ Defined-By: systemd
> > > ░░ Support: http://www.ubuntu.com/support
> > > ░░
> > > ░░ The unit ethercat.service has entered the 'failed' state with
> > > result
> > > 'exit-code'.
> > > Sep 20 12:34:15 ec-Lenovo-V15-G2-ITL systemd[1]: Failed to start
> > > EtherCAT Master Kernel Modules.
> > > ░░ Subject: A start job for unit ethercat.service has failed
> > > ░░ Defined-By: systemd
> > > ░░ Support: http://www.ubuntu.com/support
> > > ░░
> > > ░░ A start job for unit ethercat.service has finished with a
> > > failure.
> > > ░░
> > > ░░ The job identifier is 2704 and the job result is failed.
> > >
> > >
> > > and status showed this:
> > >
> > > × ethercat.service - EtherCAT Master Kernel Modules
> > > Loaded: loaded (/lib/systemd/system/ethercat.service;
> > > disabled;
> > > vendor preset: enabled)
> > > Active: failed (Result: exit-code) since Tue 2022-09-20
> > > 12:29:47
> > > CEST; 12s ago
> > > Process: 4970
> > > ExecStart=/usr/local/share/etherlab/sbin/ethercatctl
> > > start (code=exited, status=1/FAILURE)
> > > Main PID: 4970 (code=exited, status=1/FAILURE)
> > > CPU: 4ms
> > >
> > > Sep 20 12:29:47 ec-Lenovo-V15-G2-ITL systemd[1]: Starting
> > > EtherCAT
> > > Master Kernel Modules...
> > > Sep 20 12:29:47 ec-Lenovo-V15-G2-ITL ethercatctl[4977]: modprobe:
> > > ERROR:
> > > could not insert 'ec_master': Unknown symbol in module, or
> > > unknown>
> > > Sep 20 12:29:47 ec-Lenovo-V15-G2-ITL systemd[1]:
> > > ethercat.service: Main
> > > process exited, code=exited, status=1/FAILURE
> > > Sep 20 12:29:47 ec-Lenovo-V15-G2-ITL systemd[1]:
> > > ethercat.service:
> > > Failed with result 'exit-code'.
> > > Sep 20 12:29:47 ec-Lenovo-V15-G2-ITL systemd[1]: Failed to start
> > > EtherCAT Master Kernel Modules.
> > > ~
> > >
> > >
> > > I checked if the ethercat.conf file in /etc is not modified but
> > > it is,
> > > and all other ethercat -files that could be modifed are modified
> > > too.
> > > I dont know why it wont start anymore now.
> > >
> > > I deleted the old files EtherCAT and PDServ at /home/user, but
> > > that was
> > > after the error occurred.
> > >
> > > "please do not use the local path, they are the rest of your
> > > manual
> > > installation"
> > >
> > > How can I be sure im not using the /local- Path?
> > >
> > >
> > > I didnt know how to generate the code for my Simulink Model so I
> > > had to
> > > search it. I found out that my Matlab 2014b with Student Licence
> > > is
> > > missing the "Code Generation"-Tab in the Configuration Parameters
> > > of the
> > > model and that if you are using a Student version liense, MATLAB
> > > Coder
> > > and Simulink Coder can only be running MATLAB R2016a or later.
> > >
> > > Is there any other way to generate the code for the model besides
> > > installing a later Matlab-Version?
> > >
> > >
> > > Regards
> > > Henrik
> > >
> > >
> > >
> > >
> >
> >
> >
> >
>
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