Unfortunately not fornthe older library. Stretch was end of life in 2020 and even the lts support ended in 2022. Is there are particular reason why you cant update ro a recent os version?

The permission errors are probably due to missing privileges. Call the program with sudo.

Codesys sp21 isnt supported (yet). We're about to publish a beta release with sp21 support soon

Great to hear that everything is working now! I f you have any further questions feel free to open another topic

Thanks from the kernel log and noticed that your kernel command line

[ 0.000000] Kernel command line: coherent_pool=1M snd_bcm2835.enable_headphones=0 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_hdmi=0 smsc95xx.macaddr=B8:27:EB:F6:22:28 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 dwc_otg ...

string ist kein gültiger Format Bezeichner.

Aus der revpimodio2 Doku (siehe replace_io in https://revpimodio.org/en/doc2/io/) :

frm
struct() formatting (1 character) – According to Python preferences. https://docs.python.org/3/library/struct.html#format-characters

Du willst also vermutlich s bzw ...

This code wont work. It uses hsrd coded vcan adapter and no physical interface.

From the guthub readme:

Hardcoded to use the vcan0 virtual CAN device.

What does

dmesg | grep -E '(serial|piControl|pibridge)'

print in case of failure and after a successful reset?

The ConCan has just a power LED. The other LEDs are not populated (it's a standard enclosure for our extension modules thus all 6 leds are cut out).

How did you try to use the CAN interface?

Nicolai

The other sos report also contains

enable_uart=1

in /boot/firmware/config.txt?