Ethercat installation from repositories - how to step by step

Oh okay, I'll follow the instructions and share the progress.

Thanks Rodw

Hi Rod,

prevoiusly I istalled LCNC booted from USB stick, but with this file, not booting up? Did you have any suggestions? I write it with etcher, like previously.
Thanks.

have you set the boot order in the BIOS so that it tries the usb stick first.
You have not given us any useful information about what is happening.
Also what hardware?

Yes, you are right. I thought the problem is mutch simpler.
So, I have a mintbox mini, linux pc which has UEFI bios and can boot in uefi, legacy and dual mode. I set dual, and foot from usb drive.
The regular LCNC image written by etcher booting fine from the same usb stick, and the ethercat version can not, with very same process and parameters.

Success! I wrote again with etcher the same iso to the same stick and it is working now. How strange is that?

I have the system up and running, the ethercat slaves listed. Not tested with LCNC nor created the xml, but huge success for today. Thanks Rod!

After the reboot of the PC I have to issue these commands again. 

sudo systemctl enable ethercat.service
sudo systemctl start ethercat.service
sudo systemctl status ethercat.service
sudo chmod 666 /dev/EtherCAT0 

how can I set permanent the chmod and initialize the system to run after reboot the ethercat service?