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  • Str8jacket
  • Str8jacket
14 May 2025 08:40 - 14 May 2025 08:57
Replied by Str8jacket on topic Deckel-Maho DMU 50T

Deckel-Maho DMU 50T

Category: Milling Machines

Hi Stenly, I bought these Signal converter . They cost a lot more than I wanted to spend but at the time I thought I was going to get it going quicker. Approx $130USD each. The Aikron ones might be worth the gamble. Or if you are more tech savvy than I am currently then the ones jochen has linked would be a option. Here is their reply to my email for the ones I bought.

"Your calculations are very helpful.  The HEIDENHAIN LS 486C has a 20µm resolution glass which, as you correctly calculated, will produce a 10Khz signal at 12m/min.  I have attached a data sheet showing the federate limits of each interpolation version for your reference.  You can choose any interpolation option from 0.5x to 5x.  The 5x interpolation model (SA 1872) will provide you with a 1µm TTL output signal. "

In all likelihood they just have the chip jochen has linked
File Attachment:
  • Hakan
  • Hakan
14 May 2025 07:55
Replied by Hakan on topic LinuxCNC S-Curve Accelerations

LinuxCNC S-Curve Accelerations

Category: General LinuxCNC Questions

Got it to build. The install script, as far as I can tell it doesn't bring in libclothoid3d and libscurve
When I did that manually (path here forum.linuxcnc.org/38-general-linuxcnc-q...orm?start=170#323932) and copied that to the empty directories the code builds.
  • Z3rni3
  • Z3rni3
14 May 2025 06:37 - 14 May 2025 10:34
Replied by Z3rni3 on topic hal functions

hal functions

Category: General LinuxCNC Questions

Thank you! That did the trick!
I'm currently getting familiar with the HAL Scope.

After displaying the encoder position and the stepgen feedback position, I noticed that the stepgen was counting positive while moving in the positive direction.
I corrected this by adding a minus sign in front of the STEP_SCALE.

However, this caused the motor to spin in the positive direction during homing.
I fixed that by removing the negative signs from the homing and latching velocities.
There probably is a nice way to fix that, isn't there?

Edit: I've added working .hal and .ini files for future Reference. (only X has encoder feedback)
  • unknown
  • unknown
14 May 2025 00:49
Replied by unknown on topic Which kernel version is best for real time?

Which kernel version is best for real time?

Category: General LinuxCNC Questions

The thing is a newer kernel will only have better performance if there has been significant changes in the area that are being used in your application. Changes to filesystems you don't use, drivers you don't or in architectures you don't use don't expect any improvements.
To be really sure you have to read change logs and stuff like that to be sure. Newer may very well be the same as what was supplied with the Linuxcnc ISO.
Oh and don't run any other network services that you use for your motion controller, in your case you should have a dedicated NIC for Remora and another for everything else.
I still don't know why people insist on using 3rd party remote desktop clients when X is actually was designed from networking from the beginning and there are plenty of available clients and servers in the distro repos that have been time tested.
Running a CNC machine remotely is a another kettle of fish. If you need to do remote admin use SSH and learn to get comfortable with the command line.
  • PCW
  • PCW's Avatar
14 May 2025 00:43
Replied by PCW on topic None of the axis are moving - using mesa 7i92t with 7i76u

None of the axis are moving - using mesa 7i92t with 7i76u

Category: Basic Configuration

Yes, the field I/O section of a 7I76 is a Sserial device (basically a 7I84 but local)
  • SteepLearningCurve
  • SteepLearningCurve
14 May 2025 00:31
Replied by SteepLearningCurve on topic None of the axis are moving - using mesa 7i92t with 7i76u

None of the axis are moving - using mesa 7i92t with 7i76u

Category: Basic Configuration

Hi PCW
Yes, I did set it to zero :)
I did not know that Smart Serial Ports were needed to make anything io cards work.
I thought Smart Serial IO was to link via serial connectivity to some kind of remote daughter board.
I shall search on the forum to find out more about it.
Many thanks for your help :)
Much appreciated.
  • PCW
  • PCW's Avatar
13 May 2025 23:19 - 13 May 2025 23:35
Replied by PCW on topic None of the axis are moving - using mesa 7i92t with 7i76u

None of the axis are moving - using mesa 7i92t with 7i76u

Category: Basic Configuration

Looks like you set the number of sserial ports to 0, disabling the 7I76 field I/O  


 
  • tommylight
  • tommylight's Avatar
13 May 2025 23:16
Replied by tommylight on topic LinuxCNC compatible industrial PC

LinuxCNC compatible industrial PC

Category: Computers and Hardware

In Linux you can always check temperatures with
sensors
in a terminal, it will show something like this
cnc@512NVME:~$ sensors
coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +38.0°C  (high = +80.0°C, crit = +100.0°C)
Core 0:        +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 4:        +31.0°C  (high = +80.0°C, crit = +100.0°C)
Core 8:        +27.0°C  (high = +80.0°C, crit = +100.0°C)
Core 12:       +31.0°C  (high = +80.0°C, crit = +100.0°C)
Core 16:       +32.0°C  (high = +80.0°C, crit = +100.0°C)
Core 20:       +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 28:       +32.0°C  (high = +80.0°C, crit = +100.0°C)
Core 29:       +32.0°C  (high = +80.0°C, crit = +100.0°C)
Core 30:       +32.0°C  (high = +80.0°C, crit = +100.0°C)
Core 31:       +32.0°C  (high = +80.0°C, crit = +100.0°C)

hidpp_battery_0-hid-3-3
Adapter: HID adapter
in0:           0.00 V  

acpitz-acpi-0
Adapter: ACPI interface
temp1:        +27.8°C  

amdgpu-pci-0300
Adapter: PCI adapter
vddgfx:      768.00 mV 
fan1:           0 RPM  (min =    0 RPM, max = 3000 RPM)
edge:         +41.0°C  (crit = +100.0°C, hyst = -273.1°C)
                       (emerg = +105.0°C)
junction:     +43.0°C  (crit = +110.0°C, hyst = -273.1°C)
                       (emerg = +115.0°C)
mem:          +44.0°C  (crit = +100.0°C, hyst = -273.1°C)
                       (emerg = +105.0°C)
PPT:          10.00 W  (cap = 219.00 W)

nvme-pci-0400
Adapter: PCI adapter
Composite:    +31.9°C  (low  = -273.1°C, high = +69.8°C)
                       (crit = +79.8°C)

cnc@512NVME:~$
  • dbtayl
  • dbtayl
13 May 2025 23:09
Replied by dbtayl on topic free CADCAM

free CADCAM

Category: CAD CAM

Slight correction: Apparently the FreeCAD-bundle repo is being phased out, weekly builds are moving to releases in the main repo: github.com/FreeCAD/FreeCAD/releases

And yes, stuff is regularly improving in FreeCAD.
  • dbtayl
  • dbtayl
13 May 2025 23:06
Replied by dbtayl on topic LinuxCNC compatible industrial PC

LinuxCNC compatible industrial PC

Category: Computers and Hardware

do not use inexpensive power supplies, not worth the headache they cause, the time wasted finding they are the problem, nor the damage they might cause, and some are danger to life by not being isolated from the mains.
 

Definitely this! Bad power supplies are a nightmare. Maybe they work OK. Maybe they just die early. Worse cases are fire/shock, impossible-to-diagnose issues, dying and taking your entire system with it, etc. Some of the cheap supplies are terrifyingly bad.

Years back I was working with Intel NUCs in an automotive application. They would have all sorts of strange behavior- crashes, reboots, stuttering, video artifacts, ...- when run off a cheap inverter. Apparently the inverter was sufficient to cause problems... after going through the 110Vac -> 19V DC adapter, and the internal 19Vdc -> 12/5/3.3/1.8Vdc converters.


Slightly more on topic, I've got a fanless Celeron PC like this one (looks like it at least, I don't have the exact model, but it's a J6412 chipset): www.amazon.com/HUNSN-Fanless-Industrial-...g/dp/B0CGLR51SL?th=1
 It's... fine. Jitter numbers are nothing special (~30000 ns IIRC), but I also haven't had any thermal issues with it. I admittedly haven't watched the CPU temperature directly to have hard data to back that up, and my shop space is stably at a relatively low temperature. I specifically wanted fanless so there was no place for dust, metal chips, etc. to ingress.

I suspect you can lock the CPU frequency at the lowest to keep temps down, though I haven't bothered.
  • SteepLearningCurve
  • SteepLearningCurve
13 May 2025 22:45
Replied by SteepLearningCurve on topic None of the axis are moving - using mesa 7i92t with 7i76u

None of the axis are moving - using mesa 7i92t with 7i76u

Category: Basic Configuration

Hi PCW

"When using pncconf you would setup the I/O on the 7i76 TB5 and TB6 tabs ..."

Ah, we must be looking at different software outcomes, because I have no TB5 and TB6 tabs :)

Maybe the menus are dynamically generated by the selected choices?

Attached are images of the two drop down choices that I have available

Which options should I be selecting (for a 7i92t with a 7i76u directly attached)?

for board:  7i92-internal-data (is the one I was using (does it refer to the 7i92t? or the 7i76u? )
for firmware: I have tried the first two, and the last one
None of them generated any TB5 and TB6 tabs.
 
  • Hakan
  • Hakan
13 May 2025 21:55
Replied by Hakan on topic LinuxCNC S-Curve Accelerations

LinuxCNC S-Curve Accelerations

Category: General LinuxCNC Questions

Nope won't work. Well one can't delete files but you can also not create new files or write to files during the build, so the build fails.
The right thing is to fix the build so this doesn't happen.
  • tommylight
  • tommylight's Avatar
13 May 2025 21:25
Replied by tommylight on topic LinuxCNC compatible industrial PC

LinuxCNC compatible industrial PC

Category: Computers and Hardware

Sorry, typo, fixing it now.
  • tommylight
  • tommylight's Avatar
13 May 2025 21:24
Replied by tommylight on topic Which kernel version is best for real time?

Which kernel version is best for real time?

Category: General LinuxCNC Questions

Yes that is the correct place to put it.
While testing this, no stress test, no glxgears, no video, no youtube.
  • PCW
  • PCW's Avatar
13 May 2025 21:09 - 13 May 2025 21:16
Replied by PCW on topic None of the axis are moving - using mesa 7i92t with 7i76u

None of the axis are moving - using mesa 7i92t with 7i76u

Category: Basic Configuration

You do not use the GPIO pins on P1 or P2, these are for communication with the 7I76

When using pncconf you would setup the I/O on the 7i76 TB5 and TB6 tabs and the hal file connections
would look like this:

# --- MIN-HOME-X ---
net min-home-x     <=  [HMOT](CARD0).7i76.0.0.input-13

# --- MIN-HOME-Y ---
net min-home-y     <=  [HMOT](CARD0).7i76.0.0.input-14

# --- MIN-HOME-Z ---
net min-home-z     <=  [HMOT](CARD0).7i76.0.0.input-15


7I76 Inputs 13,14,15 are TB6 pins 14,15,16  (7I76U manual page 9)

 
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