https://github.com/candlerb/solis_webadmin

Web frontend to set timed charge/discharge on Solis 5G inverter with Modbus-TCP interface
https://github.com/candlerb/solis_webadmin

Last synced: 5 days ago
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Web frontend to set timed charge/discharge on Solis 5G inverter with Modbus-TCP interface

• Host: GitHub
• URL: https://github.com/candlerb/solis_webadmin
• Owner: candlerb
• License: mit
• Created: 2023-01-16T14:21:27.000Z (almost 2 years ago)
• Default Branch: main
• Last Pushed: 2023-12-20T08:27:11.000Z (about 1 year ago)
• Last Synced: 2024-10-30T12:12:01.303Z (about 2 months ago)
• Language: JavaScript
• Size: 17.6 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

        
# Solis web admin

An experimental simple web interface to control a few key parameters in the

Solis 5G hybrid inverter, such as configuring timed charge.

The backend makes a TCP modbus connection, which can connect to the

inverter's RS485 interface using

[solis_exporter](https://github.com/candlerb/solis_exporter) or a generic

modbus TCP gateway.

It should be easy to hack for other use cases.

## Modbus over HTTP??

I don't know if Modbus over HTTP is A Thing™, but the backend is basically a

Modbus-HTTP to Modbus-TCP proxy.  It accepts a POST of a raw modbus message

(without the 7-byte header), forwards it as regular Modbus TCP, and returns

the response in the HTTP body.

The frontend is in Javascript and builds ArrayBuffers containing raw modbus

messages.  This makes it easy to hack on.

However, this is obviously very dangerous.  Make sure this web interface is

blocked from the outside world!

I run it behind an Apache reverse proxy, with mod_auth_openidc talking to a

[Vault OpenID Connect provider](https://brian-candler.medium.com/using-vault-as-an-openid-connect-identity-provider-ee0aaef2bba2),

and HTTPS with a LetsEncrypt certificate.

The web interface by default binds to `127.0.0.1:8502`, so it only accepts

connections from the local host.  If you really want to expose it directly

to network traffic, then you'll need to supply a flag like `-listen :8502`