Advanced Search

Hi Mario,

The first step would be to share your HAL and INI files, as the configuration of your machine will be done in there. I don't know how deep you already went with the Linuxcnc documentation, but to keep it simple the INI file will describe your machine (axis number, axis travel and speed limits, type of GUI and many other) and your HAL file will describe the modules running in your threads (typically base and servo) and the connection between them.

Cheers, Luca

Usually no, but i had new cables not work properly, occasionally.

Thank you very much. It really cleared things up. I'll dig around a bit more and get back.

mods should also remove the old name from this thread too.

done

Good news.  Having some success.  I have xyz moving and i have spindle brake and mist toggling on and off in halshow(which i have learned to use); I even got my mist working but grok says i have it backwards and i hope i have not damaged the board because wired 24 v + to solenoid    and solenoid - to output +    and out - to   ground.  It did not work when i wired it solenoid - to out - 

I have a huanyang gt 7.5 kw vfd  it is different from the non gt and its pins i had been using with uccnc are
s1    s2   grnd(may have been +10 the wire pulled off as I was looking at it)  Ai1 and comm     I am going to the shop soon and will post my files I will see if i get any led light on the board when I m3 if there are any.  Is there someone else who has wired a gt vfd that could tell me what worked for them.  Also ready to do encoder wiring. what pins would those be? Thanks in advance and i will be posting soon.   In uccnc  I had a custom button to put the spindle brake on when changing tool because i have a quick change nut on my Bridgeport series 2.

mods should also remove the old name from this thread too.

harindugamlath wrote:

Do you know how the ethercat control loop actually works?

Here is a slide deck from a presentation on Erhercat by Martin Rostan, the ETG president in Germany I went to when he was in Australia
vmnet.com.au:10003/d/s/13FfcZqiooYngfrLX...XlFwmcTS-l7mgkSOi5gw

Roughly, In the drive a target position and target velocity is updated by linuxcnc.  The ethercat bus uses synchronized clocks to keep the slaves in sync and that Is synced to the Linuxcnc servo thread. Our linuxcnc driver (lcec) reads the bus at the beginning of the servo thread and written out at the end of the servo thread (the position of addfs in your hal file are important to achieve this lcec.read-all and lcec.write-all).
example hal: github.com/rodw-au/linuxcnc-cia402/blob/main/cia402.hal
So Linuxcnc gets a chance to update slave parameters every servo thread cycle

The best analogy in the presentation is the high speed train and the slaves are a station. Packets can get on and off the train (Ethernet frame) as the packet passes through the station without the train stopping which is what our driver does in a single sevo thread loop via the order of the addfs.

Note that CNC is a small subset of Ethercat use as the majority of devices are deployed in factory automation. There are other field bus technologies mentioned in the PDF (and perhaps Mesa's hm2_eth driver that uses UDP) that compete but they are based on standard TCP/IP packets and while Ethercat uses the Ethercat frame directly (the carriage on the train). So Ethercat is much more efficient (lean) protocol so it performs better.

Interesting that competitors Profinet et al are sponsors of TSN (Time sensitive Networking) which is in a set of standard for Real time networking. They need it. Ethercat also supports it, but does not really need to due to is better efficiency. I'm not sure if the iGh Ethercat master we use supports TSN but it also requires TSN support on the NIC's on the slaves. That is another emerging story.

Hope I have not told too many lies here.

Hello everyone,
While building my future milling machine, I encountered a small problem of understanding.
There are grease nipples on the carriages of the linear rails and on the ball screws.
Which grease gun and which grease should I buy to lubricate them properly?
The nipple on the ball screw nut is somewhat problematic, as there is very little space between the nipple and the spindle nut block.

These are the carriages and ball screw nuts I bought:
www.sorotec.de/shop/CNC-Mechanics/linear...w-spindle-12-x-4-mm/
www.sorotec.de/shop/HGH20CA-slide-block--short.html

Thank you and best regards,
2tinker

I use cat5e 1m and 0.25m.
Is that the problem?

I debugged the translator .. its online again!

Thanks. I have two machines that run Linuxcnc l. one with 3 parallel ports and running a production job. Other is an old but workhorse of a mill that run the mesa setup. Both are used daily. I'd say I'm good with Linuxcnc but first time using ethercat.

Servos that i choose are beefy. 3kw on x and y and 4.5 on z. Machine is worth saving as it's in near perfect condition. No backlash or spindle runout.

Do you know how the ethercat control loop actually works?

your user profile has been deleted.

Congratulations Andy. Well deserved. Your efforts and support have been invaluable to this community for years.
Cheers,
Mark

If full deletion isn’t possible, could you please anonymise my account.

Sometimes, I have set up a basic working machine ignoring the motion parameters. Once I have any motion working, I cut and past the tried and proven motion from the old config to the new one.
But if they are the same, just copy the folder.