Advanced Search

zz912 wrote:

Do you think the location of the template configuration files is different for 2.9 and 2.10?
 

No


So I don't get what your problem is..

guten Morgen,
ich setze derzeit eine LuxTurn Drehbank auf. Anders als meine bishrigen LuxTurns erhält diese einen Glasmaßstab auf der X-Achse.
Dazu verwende ich LinuxCNC 9.3, eine Mesa7i96s und eine 7i85 für den Encoder Eingang.
Die ist mein erster Versuch, einen richtigen closedloop Regelkreis herzustellen und ich verzweifle an der erforderlichen Einstellung der Regelparameter.
Alle Videos und Dokus zeigen Werte von P mit ca. 10, FF1 01. und FF2 0.0001, und zum Start FF1 und FF" erst mal 0.
Dann fährt bei mir die Achse nur einen ganz kleinen Weg (Bruchteil von mm) und meldet Positiosfehler, auch bei ganz kleinen Geschwindigkeiten.
Mit dem Herumspielen von P, Accelleration, FF1 konnte ich die Achse dann soweit bewegen, dass ich im HALScope den X-error minimieren kann.
Der ist jetzt eigentlich schon recht gut (<0,02) aber nur, wenn FF1 ca.1 ist. Trotzdem meldet beim Beenden des Verfahrweges Linux wieder Motor Positionsfehler. Wo muss ich da noch angreifen? Solange P und FF1 falsch waren, sah man den X Error ansteigen und bei       Erreichen von 1 kam die Fehlermeldung beim Verfahren. Aber hier ist der Fehler ja nur noch minimal und trotzdem kommt die Meldung. Liegt die Ursache ganz woanders?HAL, INI und Bildschirmaufnahme anbei
Wäre toll, wenn jemand eine Idee hätte
Rainer

I haven't tried it yet. But I think if this computer isn't good enough, I should try a new LAN card or even a new PC. I already have a hydraulic chuck and an additional servo motor waiting to be installed. The plan is to be able to mill on the lathe. I want to have a fast servo thread

I can't explain why there are such delays in internet communication. In many places, I see mentions that a servo thread of up to 4 kHz is possible on network cards.So, should I try a new network card first?

Ok, so I have the M101 and M102 functioning correctly. It is set as disabled on startup and can activate and deactivate with MDI code in Probe Basic with M101 and M102.

I have used the Template Main to create two buttons. "Edge Probe - ON" and "Edge Probe - OFF", and have them connected and alternating active on selection.

BUT, I cannot find any instructions or examples on how to create the connection from the buttons to the M101 and M102 files so that they can be run on click. Does someone have an example of the process that is used to activate the connection to the M-code files created and stored?
 

Assuming the Mesa 7i92 is my answer, I'm in Australia, I looked for a local distributor and a 10 year old post on CNCZone from rodw said that he too was Australian and had them for sale?? Is this still the case and how do I go about buying one?

Ethercat will work with Ethercat servo\stepper drives and other Ethercat devices, unfortunately my endeavors and experiments have been in other areas.

Linuxcnc comes with a plethora and sample & simulation configs, but what you want to do may not be even possible or may require more work than you've assumed. Have you explored the Linuxcnc menus, tried a simulation config, read the Linuxcnc docs ?
Did you even bother to have a look at the 2 links I gave you ? One of them explains the reset function.
When you try to run a config that you think will work what errors if any are you gettting ?
Are you getting any output at all ?
Have you got access to a logic analyser or 'scope ?

Does Ethercat hardware support updates every 25000ns, as this would have to match the base thread timing. Otherwise the steppers are going to be very very slow with updates every 1ms.

The best bet would be just to get a single axis moving, as a proof of concept and evaluate the performance.

There is a lot that you may have assumed & expected that may not be the case or possible.
Tho it does sound like a reasonable & unique idea, but I think you may be delving into unknown territory. So you make have to come up with a lot of solutions on your own.
No one would try and shut you down, but there maybe more hurdles than you realise.
In honesty I don't see how it would be an improvement over an external board that generates step & direction timings. Or an ethercat driver servo/stepper driver.

Sounds like you want to use this IO board to drive Step/dir signals for a stepper motor driver.
It will work kind of but you will be severly restricted by the slow speed of the servo thread. 
Say 1 ms servo thread, which is normal, and you will get max 500 steps per second. You will need 10 times more than that, easily.

Have you tried a 2 ms servo thread?
 

Pardon my confusion.
There seem to be a lot of supported modules, I haven't looked at the capabilities of each one. What is the ethercat support for in Linuxcnc if not for IO?
Why would I need to write my own real time driver when the existing one is loaded real time? It seems to work.

I'm fine with creating my own HAL file . Where are the example configs? If I google linuxcnc 3 axis hal example, there are only people on this forum asking similar questions. The documentation only contains snippets. This is why I expected to start with my existing hal file created by stepconf

Sometimes I get this warning:
hm2/m2_7198.0: Smart Serial port 0:Dolt not cleared from previous servo thread. Servo thread rate probably too fast. This message will not be
repeated, but the hm2_7198.0.sserial.O.fault-count pin will indicate if this is happening frequently

PS I'm wondering if I should try using an external LAN card in a PCI slot. What kind of PCIe x16 LAN card should I get?

One thing you can try is logging in via ssh, before things lockup, and when they do see if anything untoward shows up in dmesg or any of the other log files.

Does it occur when just running one of the sims from the Linuxcnc menus.

Are you able to use a config that uses Axis, if so does this give the same problems.

Just to confirm your are using one of the images from the downloads page, without an extra packages installed, cos I'm not sure if ctrl-esc gets the task manager. On the RPi5.which is the same apart from the kernel support, it doesn't bring up a task manager.

Before the title was changed, it was mainly to do with the Linuxcnc images, not Linuxcnc on Raspberry Pi OS.


Tommy if you see this can you change the topic heading so it reflects this is support for the Official Linuxcnc Rpi Images, I didn't intend for it to support Linuxcnc on the Raspberry Pi OS. That should be dealt with elsewhere.
I'm pretty sure the original tile reflected that.

I have a second Pi 400 on my Ham Radio station, so I switched the two keyboards and fired up LinuxCNC on the "new" board.  I let it sit for awhile trying to duplicate what happens.  Basically the display becomes unresponsive to anything.  The cursor moves around, but I cannot select between pages on GMOCCAPY. However I can still jog the machine around using my pendant, so It is still communicating with the Mesa 7i96 board. Also I cannot ctrl-Esc the Pi to access the task switcher, so something is locking up. 

Sorry, did not think it would affect the whole thread.

What error do you get? Delayed sserial communications have no effect on Ethernet timing.

@tommylight
Of course, there is thermal paste, and it's high-end. I'll check how the fan is spinning, but the issue could be due to the small case and the compact CPU cooler.

@PCW
The maximum clock frequency is 3.3GHz. Maybe this is a stupid question, but could the issue be caused by delayed communication between the 7i98 and 7i73, possibly due to dropped packets smart serial?