question

ivan avatar image
ivan asked

Linux DBus remote control of Cerbo GX

Hi,

I'm trying to connect to Cerbo GX via the DBus (on Linux) so I could set the ESS -> Scheduled Charging. Idea is to make an automatic schedule maker, depending on the time's list I receive daily.

Is it possible? Maybe there is a guide or any examples with something that could be useful?


When I try to use velib_python example files from the tutorial(https://github.com/victronenergy/velib_python ) I'm stuck on the second step (creating a second dbus session in a new cmd window with "dbus" or "dbus -y" commands) - the reply is "command not found".


I've never worked with DBus before, so if this question is silly please don't blame.

Thank you!

Ivan

Venus OSlinux
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

1 Answer
Ole Saether avatar image
Ole Saether answered ·

The example you referred to is meant to be executed on your local machine.
I don't think you can control Venus remotely via the Dbus. I would recomment either using Modbus or MQTT. That is what I do. I have shared a couple of examples here:
https://github.com/osaether/code-snippets/tree/master/victronenergy/modbus
https://github.com/osaether/code-snippets/tree/master/victronenergy/mqtt


4 comments
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

ivan avatar image ivan commented ·

Thank you, osaether!

I'll try Modbus and MQTT.

Do I understand correctly - I can connect to my Venus via the internet if I'm not connected to the same network?

Have you figured out how to set up the schedule via MQTT (https://community.victronenergy.com/questions/44144/activateset-schduled-charging-via-modbus.html )?

Where can I find these links with ID's of my devices:

  • N/*/system/0/Relay/0/State
  • N/*/system/0/Control/ScheduledCharge,0
  • etc
0 Likes 0 ·
Ole Saether avatar image Ole Saether ivan commented ·

Yes, you can connect to your Venus over the Internet. For Modbus you need to add port-forwarding to port 502 (default Modbus port) in the router that connects your Venus to the Internet. For MQTT you don't need any port-forwarding.

For MQTT the ID's of your device is the VRM portal ID. You can find it under Settings->VRM online portal in the remote console and under Settings->General on the VRM portal.


The MQTT paths after the "N/*" are the same as the d-bus paths. Check the Venus D-bus documentation for more info.

0 Likes 0 ·
Show more comments

Related Resources

Victron Venus OS Open Source intro page

Venus OS GitHub (please do not post to this)

Additional resources still need to be added for this topic