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  • PCW
  • PCW's Avatar
21 Jan 2026 17:05

Bitfile or help – Mesa 6i25 + 7i74 (BiSS-C) + 8i20 + 7i70/7i87

Category: Driver Boards

Any daughtercard that provides a RS-422 interface will work for BISS

With your 7I76 + 7I74 configuration, the BISS interface could either be on the one RS422 interface on the 7I76 or
any of the eight RS-422 interfaces on the 7I74 depending on the firmware.
  • Aciera
  • Aciera's Avatar
21 Jan 2026 16:52
Replied by Aciera on topic LinuxCNC S-Curve Accelerations

LinuxCNC S-Curve Accelerations

Category: General LinuxCNC Questions

@grandixximo
Note the issues related to scurve code:
github.com/LinuxCNC/linuxcnc/issues/3719
github.com/LinuxCNC/linuxcnc/issues/3720

I'm not sure if pinging you on github works.
  • sataran
  • sataran
21 Jan 2026 16:45

Bitfile or help – Mesa 6i25 + 7i74 (BiSS-C) + 8i20 + 7i70/7i87

Category: Driver Boards

Update, i just received the (almost) final plan for this project.
mesa part:
  6i25 => 7i76  -> spindle   = 1 motor
                        - >field output 1 = motor on/off
                        - >field output 2 = motor on/off
                          ? -> encodeur biss-c ?
          => 7i74   ? 0 => encodeur biss-c (RAIK060 by vishay) ?
                         1 => 7i87 -> 6 temperatures captors
                                          ->  1 pressure captor
                         2 => 8i20 -> main motor
Encodeur:
- i use an encoder raik060 from vishay (doc bellow) it seem to need a clock from the master card and maybe a signal? start?? in order to operate.

Project non mesa part.
This project is not a cnc but a system to test pieces it is composed  of 2 part:
- The first part is 1 motor cyclic powered by 8i20 in team with the biss-c encoder and a pressure captor in team with the motor controlled by 7i76 spindle

- The second part is the cooling system that will work in continue.
this is 2 motor that will run full time en 4 temp captors for security

QUESTIONS:

-Concerning the signal biss i am flexible on what part to use, ether the 7i76 or the 7i74 depending on what may be possible or the easiest and i saws where was an encoder part on the 7i76U  was curious if it was possible to use that?.
-If we keep the signal biss-c on the 7i74 it is important to note that i need to have most of the 7i74 port to work normally and only the port 0 has a biss-c socket. If it is not possible i can use a second 6i25 and 7i74 dedicated to handling the signal biss.
- i still dont have any signal from or to my encoder, is their something to do in order to generate the clock signal or to make it react? I cant seem to find details about this part in the forum (i still have a lot to read so i am not loosing hope) and chatgpt or other ai keep telling me that it is impossible or to use non existing  driver like hm2_biss.

I added the doc of the encoder i am using, it is the Multi turn version, information about the signal are page 15 and 16.

Lastly is there any doc about how to configure a framework? Even if i cant do one myself, knowing what is happening would help me to know what information i need to give in order to get a bitfile adapted to my configuration.
  • Jocman
  • Jocman
21 Jan 2026 16:39

MAC address not retrieved (after 2 years stop)

Category: Driver Boards

I'm really poor in network matter....
Why my results are so dismal?
I red "60000 packets transmitted, 60000 packets received, 0% packet loss" and I was almost happy.....
BTW, the Mesa in wired to the onboard ethernet card, while the router (LAN, WEB) is wired to a PCI board (a commercial, very cheap one, this PC is intended only for CNC machining)
At the moment I don't remember the MB specification, but as soon as I can, I'll check e post it.
  • jjdege
  • jjdege's Avatar
21 Jan 2026 16:31
Replied by jjdege on topic asd-a2-e ... lcec driver?

asd-a2-e ... lcec driver?

Category: EtherCAT

HI
the .xml file should look like this, I think
  

File Attachment:

File Name: ethercat-c...1-21.xml
File Size:0 KB
  • freemoore
  • freemoore
21 Jan 2026 16:20

7i80HD+7i48+7i42TA+7i84 Mesa firmware request (morbidelli author 503 retrofit)

Category: Driver Boards

OK. Have done this and grounding each of these inputs produces no response from any of the pins a, b or index in halshow, on any of encoder channels 00, 01, or 02.
  • PCW
  • PCW's Avatar
21 Jan 2026 16:03

MAC address not retrieved (after 2 years stop)

Category: Driver Boards

Those are fairly dismal ping results, What is the Ethernet hardware?
If Intel, make sure you disable IRQ coalescing (see hm2_eth manual page)

 
  • SehagEvez
  • SehagEvez
21 Jan 2026 16:03 - 22 Jan 2026 14:14

CNC Rotary Table with Standalone Controller for Gear Hobbing

Category: Basic Configuration

That’s a solid approach, especially starting from Clough42’s ELS project. Mounting an encoder and motor on the dividing head is a clean way to get a lot of capability without going full CNC. The DR-DRO setup makes sense too, it’s way more flexible for tropical-casino.com/ oddball indexing and manual machine tricks. Doing something similar on an MH800E with LinuxCNC sounds like a natural next step, especially since you can blend manual control with some pretty advanced automation when you need it.
  • DemonClaW
  • DemonClaW
21 Jan 2026 15:53
Replied by DemonClaW on topic Generating a own Popup

Generating a own Popup

Category: Qtvcp

First thing is that my data path isnt /usr/share anymore, instead some documentations told me to get the file seperated copyed into the machine folder, for me i got the base ui and handler there : /home/.../linuxcnc/configs/.../qtvcp/screens/qtdragon_hd/. The second thing is your talking about taking your file name it "qtdragon_hd_handler.py", if i go like that i would override the current base handler, that doesnt make sence to me. What i exactly did know is

-Rename ur .py data to vacuum_popup.py (using it as a second handler)
-Implement your 3 lines to .ini like that:
EMBED_TAB_NAME=vacuum_popup
EMBED_TAB_COMMAND=qtvcp vacuum_popup
EMBED_TAB_LOCATION=DIALOG
-/home/.../linuxcnc/configs/.../qtvcp/panels/vacuum_popup/ is the path where the ui would be

If i start then it seems like it load but it cant cant work with the class: Like you will see in the error code i attached as .txt

I feel kind of sorry but i really want to learn the things, even if the start is currently kind of hard. But your help is getting me confident i can make it.
Thanks for your help

 
  • cnbbom
  • cnbbom
21 Jan 2026 15:32
Replied by cnbbom on topic New and Working RTAI debs for 2.9

New and Working RTAI debs for 2.9

Category: Installing LinuxCNC

I took some time to modify some BIOS settings, performed several restarts, and ran tests. This is the result I was able to achieve.
  • Jocman
  • Jocman
21 Jan 2026 13:18

MAC address not retrieved (after 2 years stop)

Category: Driver Boards

sorry for being late in my answer, but job and family demand their time too.....This is what i get : joccnc@JocCnc:~$ sudo chrt 99 ping -i.001 -c 60000 -q 10.10.10.10
[sudo] password for joccnc:
PING 10.10.10.10 (10.10.10.10): 56 data bytes
--- 10.10.10.10 ping statistics ---
60000 packets transmitted, 60000 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.246/0.395/0.733/0.032 ms
  • TAKUYA
  • TAKUYA
21 Jan 2026 13:12
Replied by TAKUYA on topic StepperOnline A6 Servo

StepperOnline A6 Servo

Category: EtherCAT

In the meantime, I was testing around with the HOME_ABSOLUTE_ENCODER = 2 setting in axis SIM. It turns out that there might be a positional accuracy issue when homing. Ive created a github Issue for it already. It seems like its reading the joint position and not the encoder position when setting the new home so on re-home, it shifts the axis location in software by your home-offset value while hardware remains the same.  
  • tommylight
  • tommylight's Avatar
21 Jan 2026 12:33

Mesa 7i96 step ausgangsignal =5V , Schrittmotortriber eingang 12V was nun?

Category: Deutsch

Der Titel dieses Threads suggeriert aber, dass du eine 7i96 nutzt. Wenn dem gar nicht so ist, bin ich bei euch.

Was soll der titel sein?
  • juliankoenig87
  • juliankoenig87
21 Jan 2026 11:11

Mesa 7i96 step ausgangsignal =5V , Schrittmotortriber eingang 12V was nun?

Category: Deutsch

Selber Bauen macht meisten mehr Spaß ;-)

Der Titel dieses Threads suggeriert aber, dass du eine 7i96 nutzt. Wenn dem gar nicht so ist, bin ich bei euch.
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