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PCW wrote:

Its likely you have only 1 encoder enabled in your hal file.

To check the pinout (and number of encoders):

mesaflash --device 7i96s --addr 10.10.10.10 --readhmid
 

Thank you getting somewhere......

IO Connections for P1 -> 7I96_2
Pin#                  I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir
P1-01/DB25-01          34   IOPort       QCount           1        Quad-A          (In)
P1-02/DB25-14          35   IOPort       QCount           1        Quad-B          (In)
P1-03/DB25-02          36   IOPort       QCount           1        Quad-IDX        (In)
etc......

This is how I previously tested the basic DRO concept with A&B driving isolated inputs 0&1:
loadrt conv_s32_float count=1
addf conv-s32-float.0 servo-thread

loadrt scale count=2
addf scale.0 servo-thread
setp scale.0.offset 0.0
# 0.02mm = 0.0007874"
setp scale.0.gain 0.0007874

net ydro-in-i hm2_7i96s.0.inm.00.enc0-count => conv-s32-float.0.in
net ydro-in-f conv-s32-float.0.out => scale.0.in
net ydro <= scale.0.out

So now in my HAL file what should I replace hm2_7i96s.0.inm.00.enc0-count  with when using the P1-01 & P1-02 pins instead of the slow but isolated TB3:1&2 pins?


Much appreciated
 

Maybe get a newer Debain version?
2.28 is the last version in debain 10
Linuxcnc 2.9 comes in Debain 12

Hi Tommy,

Thank you for the response.  I am not sure what is obvious right now. The pin I am trying to use is motion.adaptive-feed which is what Aceira suggested.  From the motion page it seems that when this pin is set to 1 the feedrate is what was initially set.  Then this value can be scaled.  Its a multiple.  So to reverse feedrate at the same velocity in reverse this pin should be set to -1. 

This is how I understand it but could be wrong.  But I just don't know how to do this. 

carousel will just control the motor turret and rear the sensor for turret position. you have a lot of other things that need to happen to effect a tool change.

which make and model of tool changer ?

www.sauter-feinmechanik.com/en/scheibenrevolver.php

Shooting from the hip here, but, having that pin .... oh cr@p, i need sleep badly, having a hard time keeping things organized inside my noggin, so here goes an incoherent train of thoughts:
-probably would need scaling from the GUI to set the reverse speed, i do not think there is a need to back off at full feed rate
-should be active only when the input pin is active (mister obvious! )
-can not recall what the pin is for reverse run....
-
What did you try? Maybe it jogs a few gray cells...

rodw wrote:

But as PCW says, seeing 0 volt and 45 volts indicates it is working.
 

As i understood, he had 0V before firing the torch, and after the first firing it drops to -45, that absolutely points to THCAD working prior to firing and fails miserably after the firing as be it THACD output or 7i96S inputs are gone from the huge amount of EMI the actual torch firing causes and THCAD being enclosed inside a metal case where the source of all that EMI is.
-
The THCAD should be wired at the rectifier, not at the plasma output.
And yes, i have a THACD10 wired directly at the output lugs on an inverter plasma, but i would never advise that.
-
Just to be clear, yes you can mount the THCAD inside the plasma source, but absolutely should be avoided by inexperienced members of the human race.
The plasma source has a plethora of warnings plastered all over it, and the manuals spend several pages describing just how dangerous those things are.

Hi all,

I have given up on trying to have a PID control of the feedrate.  Instead I am using an arduino to set an input pin (hm2_7i96s.0.inm.00.input-10) to TRUE when the signal from the EDM power supply shows a short.  I am able to confirm the pin is going TRUE using hal meter.  That is the extent of my success. 

I am trying to use this pin to set the feedrate into reverse when a short is detected using motion.adaptive-feed. However, absolutely nothing I do will work.  I was trying to do this inside of the .hal file and that did not work. I also tried to do it in a python script and the GUI refused to load when this was attempted. 

I really have no idea how to program linuxCNC and I am growing a little desperate and could really use some help. Could someone please walk me through how to use the input pin hm2_7i96s.0.inm.00.input-10 to toggle feedrate from forward to reverse.  I feel like this should be straightforward but I am seriously struggling.

Thank you,
-Dylan

I have been trying to install ethercat using the step-by-step instructions for a month and nothing is working. I have erased my partition and reloaded at least 20 times, but there is always a roadblock: broken links or unmet dependencies or it can't find the repositories.

My downloaded iso file installs debian 10 and linuxcnc 2.8.4

My current error is:

The following packages have unmet dependencies:
linuxcnc-ethercat : Depends: libc6 (>= 2.34) but 2.28-10+deb10u4 is to be installed

I am either getting closer or just circling the drain, any help would be appreciated.

when I try to update libc6 it tells me the most recent version is 2.28-10+deb10u4 which is clearly older than what ethercat installation wants.  How do I get to success?

blazini36 wrote:

I haven't played with the qss builder but I did update to 1.1.1 this morning so it sounds like you are saying I should be seeing bold text with the dark-touch theme?
 

Yes you should check out the themes thread I uploaded fresh screen shots.

JT

I haven't played with the qss builder but I did update to 1.1.1 this morning so it sounds like you are saying I should be seeing bold text with the dark-touch theme?

I've recently discovered that you have to set the font-weight to 700 in the style sheet to get bold which is what I did this morning in the touch themes. The Flex QSS builder creates the correct stylesheet code for bold.

JT

@royka I can confirm that you fix works on Raspberry Pi 5. See this thread:

forum.linuxcnc.org/media/kunena/attachme...ernel-realtime.patch

So far so good. I now get "Note: Using POSIX realtime" after applying the patch from that post I linked. Thanks a lot rodw.

I've updated my gist for anyone that lands here in the future.

I decided that I was setting a bad example by running my own lathe on LinuxCNC 2.8.0~pre on Debian Wheezy. So I installed the latest LinuxCNC ISO on the DN2800MT that I built it with in 2015.
This consumed the entire 8GB SATA DOM SSD and was glacially slow. LinuxCNC and latency was fine, but UI response horrible, and I was having to press the cycle-start and (more worryingly) cycle stop buttons for a couple of seconds to get a response. Possibly a graphics issue, as Linux has never properly supported that chipset. It's also debatable whether it's a fully 64-but motherboard. (The specs and manual simply don't say...)

I could try playing about with graphics drivers and such. In fact I did, a bit, but then I got bored and bought a new motherboard. 

Asrock N100DC  www.mini-itx.com/~N100DC-ITX
The shopping list was:
PCIe slot (for the existing Mesa 6i25)
DC Power input ( to run off the controller 12V)
M2 SSD slot (so that there is no need to sort out SSD brackets, and to keep everything compact and low-power)
VGA connector (but it also has HDMI) so that my existing touchscreen (and touchscreen wiring, through the conduits and machine base) will work

Other possible plus points:
It has a parallel port header on the motherboard, in case you want to go old-school
It has a serial port, and a motherboard UART port too. 

Latency is "fine". It runs at 11k most of the time, but can go up to 25k when opening web browsers, GLX gears, that sort of thing. Perfectly OK for a Mesa card. This is with an un-tweaked LinuxCNC 2.9.3 ISO install. 

It's very snappy (possibly the SSD?) Touchy opens in under 2 seconds from pressing the button, and its 30 seconds from power-on to a responsive LinuxCNC GUI once autologin and autostart are set up. (and several seconds of that startup are spent waiting for grub to timeout and load the default). 

I added an 8GB DIMM (the smallest DDR4 I could find) and a 240GB M2 SSD (again, the smallest and cheapest I could find)
Motherboard £106 + VAT
Memory      £12.99
SSD           £16.29
Total   =     £156

More than a Pi, but it will slot right in to the existing space. 

Can't edit that post or the quotes turn to mush but I meant that that is a bold font, it shows in designer but not when run. Noto Sans Bold appears the same as Noto Sans Regular