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The mesa website has a manual for each and every board, so that should give you enough with what you can do with mesa ethernet, a base card is very easily extended via smart serial cards. The access at register level is documented in each manual.
While obtaining mesa hardware outside of the US due to postage, it can almost double the price for items coming Down Under they are solid and reliable and very well supported

As long as network latency isn't impacted theoretically it may work.
The RPi will suffer somewhat if you require the use of a base thread for some input requirement. Personally I think an SPI for simplicity a 7c81, which is simple to replicate using off the shelf Spartan 6 Dev boards, maybe a better option for IO.

Houston !!! i have a problem!!! 

Thank you very much!!!!!

JacobRush wrote:

tagged on the PC ethernet port with subinterfaces (or however linux does it these days its been a minute) and exposing those segments as untagged to the devices.
 

That's what I figured.

If I were to run LinuxCNC on a raspberry pi (whatever variant), I could potentially handle the UI (buttons, maybe some LEDs, the MPG) through the GPIO pins, and move the digital/analog I/O to ethercat devices, which would completely eliminate the Mesa hardware. That would still require ethercat on one VLAN and general purpose ethernet on another.

I might try it each way and see what works.

I have not actually tested it but I would think it would work just fine doing tagged on the PC ethernet port with subinterfaces (or however linux does it these days its been a minute) and exposing those segments as untagged to the devices. I don't think there is a way for the devices to even know its a vlan somewhere when hanging on an untagged port.

You'll need not-overlapping subnets on the vlans if you need IP connectivity over and above just ethernet frames.

Thanks for pointing out. I was using it with the vendor blobs, but when i tried Panthor I had the same. They changed a lot with the scheduling which made it not rt-friendly anymore.

It kept me busy for a while but I think it's working correctly now. glxinfo -B shows "Device: Mali-G610 (Panfrost) (0xffffffff)" and Chromium is with acceleration and 4k without frame dropping. I'll upload the patches there

Update: mpp can give huge spikes during seeking with YouTube, so it might be better to disable hardware video decoding. Or make a symlink with hw decoding for when you don't use your CNC and one with software decoding (still nod bad).
I'll see if it's fixable. install the libv4l-rkmpp package from the Google Drive.

Btw this forum is lately very difficult to reach.

drive.google.com/drive/folders/17WBVgRBA...4GUaGlhR?usp=sharing

 

One way would be to add limit switches and connect them just to the drive
leaving the home switches for LinuxCNC.

I'm planning a robot retrofit, which will use Ethercat servo drives, a mesa 7i94T (serving a 7i84U and 2x 7i73 boards), and an ethernet link to an existing Fanuc 31i-B5.

• I've read that ethercat can be run through a switch without difficulty, but I couldn't find anything regarding its behavior through a VLAN.
• I can't find any information on what one can actually do with mesa's ethernet links. I plan to connect some limit switches, discrete interfacing with the Fanuc 31i-B5, the user interface system, and some analog measurement through the mesa board set. Thus, it seems that real-time performance isn't critical.
• The link to the Fanuc 31i-B5 is ordinary switchable/routable ethernet with no special requirements. I plan to check the 31i-B5's operating mode and the state of certain R and X registers via FOCAS, but if that is delayed for a few hundred milliseconds I don't anticipate trouble.

Is it practical to use 3 VLANs and a managed switch to connect these sets of devices to a computer with one physical ethernet port, or should I add extra ethernet cards? I want to use COTS gear wherever possible.

Thanks a lot for your advice. It seems Dell Optiplex and HP Z series are well regarded. I'll follow your guidelines. It seems the safest way to go considering I have a working system. Not sure between version 2.9.4 or 2.9.5 considering I am using a parallel port.

Regards,

Routerworks

I’m currently working on a Busellato Jet 2 CNC machine. This machine uses a shared limit switch and home switch. Normally this wouldn’t be a problem in LinuxCNC, but the Yaskawa servo drives are wired in such a way that they disable any further movement in one direction once the switch is hit.The result is that during homing the servo stops abruptly, which forced me to increase the following error tolerance.Is there a better way to handle this situation? Would you recommend disabling this behavior in the servo drive, or is there a LinuxCNC-side approach to improve it?

I’ve made some good progress with the carousel. It turned out that some parameters need to be set to 0 when using counts mode, and with that change I’ve got it almost working perfectly. Homing and jogging both run flawlessly through the shell M-codes.The only issue I’m stuck on now is when I tryto rotate to a specific pocket. At that point it just hangs in state 8, because thevariable stays at 0 and won’t let the sequence continue.What’s odd is that when jogging it also goes through state 8, but in that case it’s able to pass through just fine. So it feels like I’m missing something.Any tips or ideas on what might be causing this?

This piece of equipment is in like new condition, cords and instructions are intact as well. Selling because I don't need it anymore,
if you have any questions prior to purchase please ask. Asking $4,500 Shipped. Thanks!

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Yes, there was one parameter I hadn’t interpreted correctly. Now the spindle reaches high RPM smoothly. You can still hear it struggle for a split second at low RPM, but that doesn’t seem to be a problem.

Got it, yes I'm also not a fan.
Just scanning the pages, it looks to me like the cnc-apps are mainly 2D
I'm kind of dyed in the wool solid modeller so wed to tools that are completely OTT to the actual work being done, but its a comfort zone.