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  • Hakan
28 Mar 2026 08:02
Replied by Hakan on topic Ethercat boards and hardware
Don't use EtherCAT if you want to use a step/dir driver.
There are advantages to skip the intermediate step with
step/dir for steppers and analog +-10V for servos.
The right way is to have a EtherCAT drive that controls the
motor directly, skipping that middle step.

I have built an EtherCAT board that gives step/dir signals.
But it's not the right way to go.
  • ts
28 Mar 2026 03:14
Replied by ts on topic Jog troubles
Hi, Rodw! Glad to see you in this topic)

Jog before homing.. hmmm.. for example, edm machine , some emergency, estop pressed or power loss.. and mechanical of the machine stucked. I have to move before homing, because homing may broke everything on the work table
  • ts
28 Mar 2026 03:10
Replied by ts on topic Jog troubles
Yes, it will work. But only after homing.
Before homing its work as 3rd number (all axus numbers are 0-1-2-3 )
  • ts
28 Mar 2026 03:05 - 28 Mar 2026 03:08
Thanks for your answer.
I will try it

An what about External power button to switch ServoOn? I need separately button to send command the same as power_pb ib flexgui

TS
  • tommylight
28 Mar 2026 02:44
Replied by tommylight on topic Differential encoder hard crashes the PC MESA7i77
See if you can disable this in BIOS, it is usually enabled by default
www.google.com/search?client=firefox-b-l...ssive+power+managent
Also, if you are using any kind of PCI-E riser or cable, se the PCI-E speed/mode to GEN1
  • Lcvette
28 Mar 2026 02:29
Find the culprit?
  • NWE
28 Mar 2026 02:05
Replied by NWE on topic Ethercat boards and hardware
here is some info on a cheap ethercat stepper drive. But it is not as cheap as your A4988.
4 axis stepper drive
  • PCW
28 Mar 2026 01:55 - 28 Mar 2026 02:09
You could try  setpci and verify if the [disabled] goes away from the lspci listing
  • grossm5000
28 Mar 2026 01:08
Replied by grossm5000 on topic Differential encoder hard crashes the PC MESA7i77
the options in my BIOS PCI Subsystem Settings are:
Above 4G Decoding (enable/disable)
SR-10V Support (enable/disable)

and in BIOS Onboard Device Configuration
PCIEX1_1 Mode (auto) <--but i think this only refers to speed. I have this selection/option for all the PCI slots on the board

I tinkered with all of these earlier today to no result. I do have an ASUS A520M motherboard...BIOS options seem pretty generic.
  • grossm5000
28 Mar 2026 00:53 - 28 Mar 2026 00:53
Replied by grossm5000 on topic Differential encoder hard crashes the PC MESA7i77
I do have access to some BIOS PCI settings, but not sure if I can screenshot them. I am afraid the best I can do is take a picture. 

I did some searching...will this command do anything for me?
Code:
sudo setpci -s 04:00.0 COMMAND=0x02 supposedly enables the memory space, but I am certainly not a software wizard...
  • PCW
28 Mar 2026 00:49
The problem is this:

Region 0: Memory at fce00000 (32-bit, non-prefetchable) [disabled] [size=64K]

Which is likely something the BIOS did so may be fixable if you have access to BIOS PCI settings
I will take a look into what is needed to get mesaflash to re-enable the memory region (lLinuxCNC does this)
  • rodw
28 Mar 2026 00:44

Ran into an issue with IRQ balance after updating to trixie
 
Late to the party but currently best practice is not to use irqbalance. the balancing is now managed internally in the kernel so adding a second balancer can confuse things.... but it worked here....
  • grossm5000
28 Mar 2026 00:41
Replied by grossm5000 on topic Differential encoder hard crashes the PC MESA7i77
Here we are! I super appreciate it...so does my wife image missing /media/kunena/emoticons/laughing.png Ive been trying to make this work all day
  • rodw
28 Mar 2026 00:35
Replied by rodw on topic Probe Active before non-probe move
I once set a digital input in my probing sequence that was and2'd to the probe signal to stop this.
I think a better way would be to use motion.motion-type = 5 to signify probing was in use and disable the signal if this is false.
  • rodw
28 Mar 2026 00:24
Replied by rodw on topic Ethercat Setup help needed for beginner

and even professionals sometimes find it frustrating.
Sometimes????? More often than that! image missing /media/kunena/emoticons/w00t.png
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