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Cant do this anymore bye all wrote:

As far as I have been able to see there has been no major hardware updates to the RPi5. Or are you referring to the ability to boot from NVME ?
 

I think there has been a lot of improvement under the hood including making the 6.12 kernel available.But yeh, not something you can really see.

log:

libnml/cms/tcp_srv.cc 694: received_serial_number (1212501068) does not equal expected serial number.(0)
(time=1736393516.203628,pid=13259): TCPSVR request received: fd = 6, serial_number=1212501069, request_type=1327514957, buffer_number=1124928083
libnml/cms/tcp_srv.cc 1501: Unrecognized request type received.(1327514957)
 

Hi PCW,

Thanks for your reply, I was told they were working when I bought the machine but haven't been in a position to start fault finding yet or check that this is true. (The guy I bought it from didn't know what the problem actually was though, so everything needs to be checked).

I'll report back after a month or two and I'll look into those boards you mentioned.

Thanks again for replying and any other help you can think of

Pat

The first P1 encoder is  encoder 1 so the position would be:

hm2_7i96s.0.encoder.01.position

and the most important parameter for that encoder would be:

hm2_7i96s.0.encoder.01.scale


 

What I would do is get a basic working configuration with pncconf.
This means setting the machine limits, scaling, directions, timings,
velocities, and accelerations. Once this is working I would then worry
about tuning for best performance and  special features like drive fault
operation.

That is, don't get the sandpaper out when you are still in the chainsaw stage.

 

The real time thing in the kernel seems a little confusing at the moment.

Unless a change is made to the /arch/Kconfig file you are unable to select a fully_preemptible kernel, which would appear the one required for Linuxcnc, the available info refers to this as RTOS. I'm not exactly clear about the amd64 kernel, as ATM I've only been interested in arm64 and specifically the bcm2712 kernel. I have tried the change the above mentioned file and can confirm the behavior.

Unfortunately I don't have a free SD card for testing and unable to get out to obtain one. So I can't comment on the kernel when booted, which is frustrating as I like to test things before commenting.

There is also the ability to select the type of real time kernel with via the kernel command line.