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Might be usable with a 2 ms servo thread.

I would check how LinuxCNC runs now

 

Alright. I applied that command in the grub configurator, rebooted and ran the pinIRQ script again.
ping times look much better (dropped from 8 to 1.2), but I am still too high... right?

first

sudo ./pinirq.txt enp1s0
Cores: 4
Old CPU Mask: f
Set device enp1s0 IRQ 121 CPU mask to 8

then

cnc@linuxcnc:~/gcodes$ sudo chrt 99 ping -i .001 -q 10.10.10.10
PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data.
^C
--- 10.10.10.10 ping statistics ---
142832 packets transmitted, 142831 received, 0.000700123% packet loss, time 143400ms
rtt min/avg/max/mdev = 0.056/0.108/1.211/0.035 ms

 

No idea if I did anything wrong, but after I applied that line from above and rebooted, Debian won’t launch the desktop environment anymore. I can manually start xfce. Never mind 

Definitely do the grub (kernel command line) change, also the pinirq script will have
minimal effect unless you add the isolcpus line.

 

Hello everyone. 
I know there are plenty of other threads about this topic, and I think I read them all, still I struggle to solve the issues that I am having.

My setup is:

• Dell Wyse 5070 with Celeron J4105 4-core cpu THIN CLIENT
• realtek onboard NIC
• fresh Linuxcnc 2.9.3 install
• brandnew Mesa 7i76eu, flashed with pktUART firmware

I experience issues when I startup Linuxcnc / probebasic.
Most of the time the system errors out right after startup with "error following read...". Sometimes I am "lucky" and it works for maybe 5minutes before it errors out. 

What I did so far (after reading in this forum for 2 nights):

• I ran sudo chrt 99 ping -1.001 -q 10.10.10.10 to get some statistics. Here is the result:
  
  179555 packets transmitted, 179555 received, 0% packet loss, time 180656ms
  rtt min/avg/max/mdev = 0.052/0.065/8.974/0.036
  
• disabled all BIOS options regarding power management, hyperthreading, ... etc
• Installed R8168-dkms driver (sudo apt-get install r8168-dkms)
  While searching in this forum, I found that some people had to install linux headers first. I did not do that. 
  When I run a script to identify the used drivers (JCW posted this somewhere a while ago), i get the followig result:
  ./edriver.txt
  xargs: warning: options --max-args and --replace/-I/-i are mutually exclusive, ignoring previous --max-args value
  enp1s0 : r8169
  wlp0s12f0 : iwlwifi
  
  Is this result "expected? Or did the driver installation not work?
  Other people posted that they had to install linux-headers and purge the old driver... 
  
• then I found a script that JCW posted in another thread that pins the IRQ somewhere (I honestly dont really understand whats behind this, but still this is the output):
  cnc@linuxcnc:~/gcodes$ sudo ./pinirq.txt enp1s0
  Cores: 4
  Old CPU Mask: f
  Set device enp1s0 IRQ 122 CPU mask to 8
  
  However, it did not improve my ping / latency at all. Do I need to do anything prior to that? Isolating something?

What I have not done yet:

• editing the kernel parameters in grub customizer (quiet isolcpus= 3 pcie.aspm=0 r8168.eee_enable=0 pcie_aspm=off idle=poll).
  I dont really understand what this does, therefore I hesitated to run it. 
• .... 

Another question... almost all other threads regarding this issue link to a tutorial / troubleshooting file that was hosted by @rodw on google drive, but the link is dead. Could someone provide this file?

regards and thx.
Sebastian
 

Hello,

I am a bit new to linuxcnc but have mostly used mach3 in the past. So far things are going very well except this one issue.  I am wondering if there is a way to access more than 9 coordinate systems in linuxcnc?

For example on this doc page it states

linuxcnc.org/docs/html/gcode/coordinates.html

"This chapter introduces you to offsets as they are used by the LinuxCNC. These include:

• Machine Coordinates (G53)

Nine Coordinate System Offsets (G54-G59.3)

Global Offsets (G92) and Local Offsets (G52)"


On mach3 they have implemented G59 PXXX
where XXX is (iirc) between 1 and 255, giving access to 255 coordinate systems. I don't need 255 but i do need about 30.  Is there any way to achieve such a thing with linuxcnc?

Maybe you can write your own macro to load the offsets from a file or something like that if only 9 workpiece coordinates are implemented in linuxcnc?

Any suggestions on how to approach adding coordinate systems would be welcome.

Thank you for your time.

s

 I have been trying to use the spotting operation on my plasma cutter. 

it is a file with an array of many holes. 
so I used the drilling operation. 
I used the postprocessor for local materials.

So I got it to work well. Does the spots as expected. 
But there is some strange behavior on my machine. 
If I load the file the machine uses the jogging as set on the machine. But if I activate the button for slow jogging it still jogs fast. After a couple of spots the machine stops at random amounts of spots. 
The pause resume button does nothing. 
I have to stop the program completely and resume at the line where it stopped. 

Is the local materials post processor ok for spotting operations or do I need a custom post processor for this?

 


 

I managed to get all 3 axes working.
For the inputs, do I need to connect the GND to GPIO33, for example?
It's ok the inputs work
Could someone help me to make the changes in the al file and the ini file

I found Freecad is one of the few free cad programs that don’t need an internet connection.
I used other free programs like google sketch and others. Google sketch free only works on the internet. Others just became paid versions.
I chose Freecad I because I know it will remain free and it does not require internet.

For doing simple stuff like brackets and everything else you do on a plasma cutter Freecad is easy to use.
There was a steep learning curve but it was absolutely worth it.

Using letters on free am seems a bit complicated so I use Inkscape.

Sometimes I design a part export it to svg and add some letters.

Constraints on the sketcher was a bit difficult to learn. After watching some YouTube videos I got a better understanding and absolutely love it.

Spreadsheet functions are also excellent.

For example you can design a flansch. Link a spreadsheet to it and change the size number of holes etc by just entering the numbers in the spreadsheet.