How to install Modbus seriat (RTU) plugin on Ubuntu with a Docker

[Diorflam]

Good morning,
I installed FUXA with help from "https://github.com/frangoteam/FUXA/wiki/Installing-and-Running"
Docker Compose (first option).
It works. but I don't know how to add the modbus serial plugin.
I'm on Linux Ubuntu 22.04.5 LTS
Can you help me please.
Sincerely

[MatthewReed303]

@Diorflam you have to pass the host serial port through the docker container see my reply here: #1613 (comment)

[Diorflam]

Thank you for your answer.
I modified the file "The Docker compose file".
But I have an error message:

`
plc@plc-280-G1-MT:~$ cd docker/fuxa

plc@plc-280-G1-MT:~/docker/fuxa$ sudo docker compose up -d

[+] Running 0/1

⠋ Container fuxa-fuxa-1 Starting 0.1s
Error response from daemon: error gathering device information while adding custom device "/dev/ttyUSB0": no such file or directory

plc@plc-280-G1-MT:~/docker/fuxa$

`

I don't know why the /dev/ttyUSB0 file disappears when I start the PC.
To display it again, I have to remove the USB and then put it.

`plc@plc-280-G1-MT:~/docker/fuxa$ sudo docker compose up -d

[+] Running 1/1

✔ Container fuxa-fuxa-1 Started 0.2s

plc@plc-280-G1-MT:~/docker/fuxa$
`

But that doesn't change anything when I start.
The error is gone but I still don't know how to activate the serial modbus plugin.
Thank you for your help.

[MatthewReed303]

have a read through https://www.losant.com/blog/how-to-access-serial-devices-in-docker

The modbus plugin is activated by default, just add it in connections and set it up.

[Diorflam]

Thanks for the help, it works now.
Here are the changes.

file : "docker-compose.yml" :
`"
services:
fuxa:
image: frangoteam/fuxa:latest
network_mode: "host"
#ports:
# - 1881:1881
devices:
- "/dev/ttyUSB0:/dev/ttyUSB0"
volumes:
- ./fuxa_appdata:/usr/src/app/FUXA/server/_appdata
- ./fuxa_db:/usr/src/app/FUXA/server/_db
- ./fuxa_logs:/usr/src/app/FUXA/server/_logs
#- ./fuxa_images:/usr/src/app/FUXA/server/_images
environment:
- TZ=Etc/UTC
restart: always

"
`
In the folder /etc/udev/rules.d

I had to rename "99-arduino_rules.rules" to "98-arduino_rules.rules",
because it had already taken the place 99

Creating the file "99-serialfuxa.rules" and put in this file :
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2341", GROUP="plugdev", MODE="0666"

I restarted the PC but fuxa does not start anymore at startup.

I checked the presence of dev/ttyUSB0.
Then I started fuxa with the command line:
"

lc@plc-280-G1-MT:$ cd docker/fuxa
plc@plc-280-G1-MT:/docker/fuxa$ sudo docker compose up
[+] Running 1/1
✔ Container fuxa-fuxa-1 Recreated

thank you for your help

[MatthewReed303]

@Diorflam use sudo docker compose up -d this will start automatically when PC restarts, one issue you may have with USB is on reboot the USB UID may change and not work. See the above link for alternative methods to using devices: