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  • Philip Lydin
  • Philip Lydin
05 Sep 2025 12:03
Replied by Philip Lydin on topic Problems with Lichuan Ethercat servo drive

Problems with Lichuan Ethercat servo drive

Category: EtherCAT

Is it possible to use the lichuan servos in csv mode with ethercat. i dont see any target speed the the variable pdo mapping. Can you use the fixed pdo mapping? Ive tried using index 1702(fixed) but im not able to enable the drive.
  • Jonathan_H
  • Jonathan_H
05 Sep 2025 11:37 - 05 Sep 2025 11:38
isolcpus idiot's guide? was created by Jonathan_H

isolcpus idiot's guide?

Category: General LinuxCNC Questions

Hi,

I have LinuxCNC running on a Lenovo m710q with a Realtek NIC.

I regularly get an error saying the servo thread is probably too fast, but the thread is set to 1khz and this post suggests that the hardward I am running should be able to manage a stable 2kHz servo thread

forum.linuxcnc.org/18-computer/56231-get...h-pc-and-mesa#329327

I have gone into the BIOS and turned off all the features that you are told to turn off.

From that thread and a couple of others, it seems that perhaps the solution lies in Isolcpus, however I'm rather unclear as to what I need to set where. I gather that it is a configuration setting to remove a cpu core from the scheduler, but are then how do I get what I want to run on that core on there?

Is there an idiot's guide anywhere?

regards

Jonathan



 
  • Kuzma30
  • Kuzma30
05 Sep 2025 11:27
Replied by Kuzma30 on topic AMSAMOTION IO module

AMSAMOTION IO module

Category: EtherCAT

I have such info for my module.
ethercat xml
<?xml version="1.0" ?>
<EtherCATInfo>
  <!-- Slave 0 -->
  <Vendor>
    <Id>2965</Id>
  </Vendor>
  <Descriptions>
    <Devices>
      <Device>
        <Type ProductCode="#x00001101" RevisionNo="#x01020109">EC3A-IO1632</Type>
        <Name><![CDATA[EC3A-IO1632]]></Name>
        <Sm Enable="1" StartAddress="#x1000" ControlByte="#x26" DefaultSize="128" />
        <Sm Enable="1" StartAddress="#x1080" ControlByte="#x22" DefaultSize="128" />
        <Sm Enable="1" StartAddress="#x1100" ControlByte="#x64" DefaultSize="2" />
        <Sm Enable="1" StartAddress="#x1400" ControlByte="#x20" DefaultSize="2" />
        <RxPdo Sm="2" Fixed="1" Mandatory="1">
          <Index>#x1600</Index>
          <Name>DOOutputs process data mapping</Name>
          <Entry>
            <Index>#x7000</Index>
            <SubIndex>1</SubIndex>
            <BitLen>16</BitLen>
            <Name>OUT_GEN_DO</Name>
            <DataType>UINT16</DataType>
          </Entry>
        </RxPdo>
        <TxPdo Sm="3" Fixed="1" Mandatory="1">
          <Index>#x1a00</Index>
          <Name>DIInputs process data mapping</Name>
          <Entry>
            <Index>#x6000</Index>
            <SubIndex>1</SubIndex>
            <BitLen>16</BitLen>
            <Name>IN_GEN_DI</Name>
            <DataType>UINT16</DataType>
          </Entry>
        </TxPdo>
      </Device>
    </Devices>
  </Descriptions>
</EtherCATInfo>
cnc@cnc:~$ ethercat pdos
SM0: PhysAddr 0x1000, DefaultSize  128, ControlRegister 0x26, Enable 1
SM1: PhysAddr 0x1080, DefaultSize  128, ControlRegister 0x22, Enable 1
SM2: PhysAddr 0x1100, DefaultSize    2, ControlRegister 0x64, Enable 1
  RxPDO 0x1600 "DOOutputs process data mapping"
    PDO entry 0x7000:01, 16 bit, "OUT_GEN_DO"
SM3: PhysAddr 0x1400, DefaultSize    2, ControlRegister 0x20, Enable 1
  TxPDO 0x1a00 "DIInputs process data mapping"
    PDO entry 0x6000:01, 16 bit, "IN_GEN_DI"

How to make xml config file for it?
  • TheTinkeringMechanic1
  • TheTinkeringMechanic1
05 Sep 2025 10:40 - 05 Sep 2025 11:04
Replied by TheTinkeringMechanic1 on topic (Solved) Races through first cycle upon first start up. Fine afterwards.

(Solved) Races through first cycle upon first start up. Fine afterwards.

Category: Basic Configuration

Taking into consideration according to that person You consider an esteemed colleague and I called conceited, I'm too dumb to even know what operating system I'm working with... I've had enough of the elitist clique here... Thank each other all you like.
I think I'll take my chances and figure it out on my own. I didn't come here because I couldn't, I came here because (I thought) asking people who are more familiar with something than I am can save time.
My mistake.

In the end if I can't figure it out, I'll just deal with it until this job is done and I have time to gut this of Linux and install a complete FANUC oi-TB CNC unit I have. I'm also fairly certain I have everything I need to install this other Fagor unit I have access to.
Options are a plenty...
  • andypugh
  • andypugh's Avatar
05 Sep 2025 08:34
Replied by andypugh on topic Troubles to get started with SD240 Retrofit

Troubles to get started with SD240 Retrofit

Category: Turning

You can test the index-enable system by hand.

Open halshow (this is "show machine configuration" in Axis, in some other interfaces you may need to open a terminal and "halcmd loadusr halshow"

Add the x-index-enable signal to the Watch tab. I think you should see a button that allows you to set it.

Then rotate the motor by hand, and see if the index-enable signal ever goes false.

Hint, the colour scheme of halshow is eccentric. dark red = 0 / false and yellow = 1 / true
  • andypugh
  • andypugh's Avatar
05 Sep 2025 08:34
Replied by andypugh on topic Troubles to get started with SD240 Retrofit

Troubles to get started with SD240 Retrofit

Category: Turning

You can test the index-enable system by hand.

Open halshow (this is "show machine configuration" in Axis, in some other interfaces you may need to open a terminal and "halcmd loadusr halshow"

Add the x-index-enable signal to the Watch tab. I think you should see a button that allows you to set it.

Then rotate the motor by hand, and see if the index-enable signal ever goes false.

Hint, the colour scheme of halshow is eccentric. dark red = 0 / false and yellow = 1 / true
  • andypugh
  • andypugh's Avatar
05 Sep 2025 08:01
Replied by andypugh on topic Y axis A slave help request

Y axis A slave help request

Category: General LinuxCNC Questions

Are the stepper motors locked or free when they should move and don't?

There is a "quirk" in Stepconf that "Test axes" doesn't set the drive "enable" pins.
(Running the full system would, if the enables are configured)

Many stepper drivers have a "not-enable" input, which turns the drive off when high. (It's typically a waste of an IO pin with stepper motors)

If the motors are locked then the drives are enabled, and for some reason the step pulses are not being seen. If they are free then suspect the enable logic.
  • Milkof
  • Milkof
05 Sep 2025 07:37
Replied by Milkof on topic Connecting my 7i96s to the VFD

Connecting my 7i96s to the VFD

Category: Driver Boards


Hi,
I'm manually adjusting the max_output values ​​and the others now, but if I wanted to do everything in pncconfig, where can I find these values?
Thanks.
Milko
  • rodw
  • rodw's Avatar
05 Sep 2025 07:35
Replied by rodw on topic Questions about "Auto Zero" in QT_Dragon_HD probe tab.

Questions about "Auto Zero" in QT_Dragon_HD probe tab.

Category: General LinuxCNC Questions

Changes pushed to 2.9 won't be accessible unless the devs issue a point release. eg 2.9.5
You would probably be better off upgading to master 2.10 branch so you get changes as they happen.
QT dragon is a pretty new GUI and Chris has been beavering away improving it all the time..... :)
  • Hakan
  • Hakan
05 Sep 2025 07:32 - 05 Sep 2025 07:50
Replied by Hakan on topic Issue with OP Entry Delay and Failures in LinuxCNC + EtherCAT System

Issue with OP Entry Delay and Failures in LinuxCNC + EtherCAT System

Category: EtherCAT

Afaik you need to re-compile the ethercat sever with the --disable-eoe option.
 
  • amanker
  • amanker
05 Sep 2025 07:24 - 05 Sep 2025 10:00
Replied by amanker on topic Remora - Rpi Software Stepping Using External Microcontroller via SPI

Remora - Rpi Software Stepping Using External Microcontroller via SPI

Category: Computers and Hardware

Using rpi5. I have included my config files also.

Update: This I compiled bootloader version and Installed that. And added Blink in config.txt to test if firmware is working. Yes firmware is working and led is blinking. But Still no connection to RPI5, machine can't come out of estop.
  • 3Draf
  • 3Draf
05 Sep 2025 07:24
StepConf - tandem axe Y - comment configurer 2 moteurs synchrones was created by 3Draf

StepConf - tandem axe Y - comment configurer 2 moteurs synchrones

Category: Français

Bonjour à tous,
J'ai une découpeuse plasma sous Mach3 et je souhaite l'utiliser avec LinuxCNC.
L'univers de LinuxCNC est nouveau pour moi donc j'avance à petit pas.
Après mes déboires avec l'axe X qui saccadait que j'ai pu régler en augmentant le "Base Period Maximum Jitter".

Je me retrouve dans l'impasse pour l'axe Y, j'ai 2 moteurs en symétrie (donc l'un des deux doit être inversé) mais quelle que soit la configuration des pins (ex: pin4= step Y/ pin 5= dir Y / pin 8 = tandem step Y / pin 9 = tandem dir Y inv), je n'arrive pas à faire bouger les 2 moteurs en même temps.
J'arrive à faire déplacer un moteur soit Y1, soit Y2 et seul celui config en step Y et dir Y fonctionne (juste Y1 s'ils sont configurés pareil).
Est-ce une mauvaise compréhension de ces paramètres ?
Dois-je éditer manuellement les fichiers .hal et .ini ?
Quel est la bonne méthode dans StepConf pour synchroniser 2 moteurs ?

Merci de m'avoir lu,
Raph
  • jackj120
  • jackj120
05 Sep 2025 07:23
Replied by jackj120 on topic Mecanumeric MF2040 LI retrofit (Pantograph)

Mecanumeric MF2040 LI retrofit (Pantograph)

Category: Milling Machines

Ok but, when i'm done with the homing , the machine have a problem with the limits. It's convinced that it have the two meters going to the limit homing switch but after the homing it would have to do go to the others side for two meters. Maybe today i figure out how to do that.
  • onceloved
  • onceloved's Avatar
05 Sep 2025 05:52
Replied by onceloved on topic Issue with OP Entry Delay and Failures in LinuxCNC + EtherCAT System

Issue with OP Entry Delay and Failures in LinuxCNC + EtherCAT System

Category: EtherCAT

If you are Chinese, add me on QQ: 304394405. If you are foreign, add me on Discord: onceloved.cn
  • ziggi
  • ziggi's Avatar
05 Sep 2025 05:45 - 05 Sep 2025 05:46
Replied by ziggi on topic Troubles to get started with SD240 Retrofit

Troubles to get started with SD240 Retrofit

Category: Turning

I checked the index signal with a physical oscilloscope (Hameg 303 in this case) and I can see the index signal "fly by"... it is very fast

 

Thank you Andy, I will follow your advice to try to observe both, index-enable signal and hm2_7i80.0.encoder.00.input-index pin in the HAL scope and see if the index-enable pin behaves as you describe it.

Thank you
Sigi


 
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