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unknown wrote:

I guess you didn't use the sysfs patch, this is required for Linuxcnc to recogonise that the environment is a real time one.

Easiest option will be to download the latest RPi4 image on the downloads page, has a 6.12.11 kernel (with the required sys_fs patch), Linuxcnc version 2.9.4. Might pay to backup your home directory.

As usual
user: cnc
pwd: cnc

linuxcnc.org/iso/rpi-4-debian-bookworm-6...25-01-27-0404.img.xz
linuxcnc.org/iso/rpi-4-debian-bookworm-6...7-0404.img.xz.sha256
 

Hi unknown,

Thank you for your suggestion. I have burnt that image, and I am able to ping my 7i96s on 10.10.10.10.

1. I am not able to go very far with PNCConf -- I have locale problem, using menu-config, I have set my default locale to en AU.UTF_8, still no go. There are existing posts on this problem, I will try it again.

2. This image does not come with WIFI preconfigured. I am using the Pi Imager to burnt it, and WIFI setting did not take effect.

Thank you and best regards,

....behai.





 

Should I connect one transformer lead to ground (the plug is 3-prong, the chassis is grounded steel)?

NO!
Connect ground only to box/chasis and to shielded cables.
Amps should be enough, move on.
Transformers can handle a lot of abuse, small overloads are no problem at all. After you power everything and have it running for 10-15 minutes, do check if it is heating from time to time, and even if it gets hot after and hour or two of work, as long as you can keep your palm on it, it is OK.
Human hand will have issues above 50 degree C, at 80 it burns like hell, and you will always know if the temp has gotten over 100 as your skin will remain attached to whatever you are touching, and fingers will turn shiny!