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  • tommylight
  • tommylight's Avatar
18 Jan 2025 20:13

QtPlasmaC v2.9 - Time between turning off and back on the arc on a Powermax 105

Category: Plasma & Laser

Mesh mode will trigger ARCOK immediately after striking an arc, but does not fit with what the OP is describing in some details, in some it does fit.
Also does not fit the 2T/4T control mode some manual plasma sources have.
  • rodw
  • rodw's Avatar
18 Jan 2025 20:09
Replied by rodw on topic Age of the website and forum

Age of the website and forum

Category: Forum Questions

This is the root directory listing

root@forum:~# ls
access.log do-dns-mirror make-plot PHPMailer-5.2.14 update-plot
bin error.log monitor-memory plug_reCAPTCHA.rc1.zip v5.2.14.zip
cb_recaptchav2.zip expire-session.sh pflogsumm-1.1.1 requests.gnuplot
count-requests flo.sql pflogsumm-1.1.1.tar.gz SHOW
data letsencrypt PHPMailer simp_le

There would be a seperate user. It should have its own home folder, the same as you do on your Linuxcnc PC.
from your root home folder, try:
cd ..
ls

Then explore the seperate folders listed.

Note my knowledge is very dated ad things could have changed


 
  • Murphy
  • Murphy
18 Jan 2025 20:02

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

Thanks cakeslob, I copied everything from yours last time, the only thing I don't have is the low pass, I'll give it a shot thanks 
  • PCW
  • PCW's Avatar
18 Jan 2025 19:58 - 18 Jan 2025 20:03

chargepump macht 500Hz, benötige aber 10kHz

Category: Deutsch

If you need a 10 KHz chargepump (and you can spare a step/dir output)
I would use the last stepgen as a chargepump

You do this by setting stepgen 4 to velocity mode and quadrature:

setp hm2_7i96s.0.stepgen.04.control-type  1         # velocity mode
setp hm2_7i96s.0.stepgen.04.step_type  2             # quadrature so square waves
setp hm2_7i96s.0.stepgen.04.stepspace 5000       # short enough to not interfere
setp hm2_7i96s.0.stepgen.04.steplen      5000       # ""
setp hm2_7i96s.0.stepgen.04.maxaccel 0              # make velocity command instant
setp hm2_7i96s.0.stepgen.04.velocity-cmd 10000 # 10 KHz
net machine-is-on hm2_7i96s.0.stepgen.04.enable

And then use stepgen4's step pin as a 5V 10 KHz chargepump signal
 
  • rodw
  • rodw's Avatar
18 Jan 2025 19:40

QtPlasmaC v2.9 - Time between turning off and back on the arc on a Powermax 105

Category: Plasma & Laser

I think you have a wiring fault. All the 105 does is close an internal relay when a valid arc is established. you provide the voltage to that relay and read the output when it opens and closes.I would confirm behaviour with a multii meter before going further.

We can't help until you provide full details of your THC, the way you have integrated with linuxcnc and the connections you have made.

Most people  use a Mesa Ethernet card and Mesa THCAD and not use an external THC.

Please don't duplicate your replies.
  • Waggi
  • Waggi
18 Jan 2025 19:18

chargepump macht 500Hz, benötige aber 10kHz

Category: Deutsch

Hallo, ich bin gerade dabei meine Ansteuerung für die Fräse von Mach 3 auf LinuxCNC umzubauen. Die Fräse ist eine High-Z S-1000/T mit einer Heiz Zero-3. Diese Steuerung benötigt ein chargepump Signal. Aus meiner Mach3 Steuerung kommt dafür eine Frequenz mit 10KHz, womit es funktioniert. Aus meiner Mesakarte 7i96S kommen leider nur 500 Hz. 
In dem Konfigurationstool von LinuxCNC kann ja auf einen der Output's ein chargepump-Funktion gelegt werden, diese habe ich ausgewählt. Wie kann ich die Frequenz bestimmen die da heraus kommt?
Was ich auch vergeblich gesucht habe, gibt es jemand der eine fertige hal bzw ini hat die mit einer 7i96S und Heiz Zero-3 Steuerung zusammen arbeitet? Dann könnte ich diese als Grundlage nehmen oder im Vergleich mit meiner evtl. feststellen was ich falsch mache.

Gruß
  • cakeslob
  • cakeslob
18 Jan 2025 19:13

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

Hey Murphy, i cant really see whats happening in the video but i think I can tell

github.com/cakeslob/RRW_LAB/blob/inc/Lin...c/remora_encoder.hal
github.com/cakeslob/RRW_LAB/blob/inc/Lin...c/remora_spindle.hal
check out these 2 hal files, specifically the encoder one, or just try them out. the encoder one has a lowpass filter to smooth out the rpm signal
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