dbus-fronius-smart-meter's Introduction

dbus-fronius-smart-meter

Integrate Fronis Meter smart meter into Victron Energies Venus OS

Purpose

With the scripts in this repo it should be easy possible to install, uninstall, restart a service that connects the Fronis Meter to the VenusOS and GX devices from Victron. Idea is pasend on @RalfZim project linked below.

Inspiration

This project is my first on GitHub and with the Victron Venus OS, so I took some ideas and approaches from the following projects - many thanks for sharing the knowledge:

How it works

My setup

Fronius Primo 5 with Smart Meter TS 100A-1
- 1-Phase installation (normal for Spain)
- Wired connected
Raspberry Pi 4 with Venus OS - Firmware v2.90-17
- No other devices from Victron connected
- Wired connected

Details / Process

As mentioned above the script is inspired by @RalfZim fronius smartmeter implementation. So what is the script doing:

Running as a service
connecting to DBus of the Venus OS com.victronenergy.grid.http_40
After successful DBus connection Fronis Meter is accessed via REST-API A sample JSON file from Fronis Meter can be found here
Serial is taken from the response as device serial
Paths are added to the DBus with default value 0 - including some settings like name, etc
After that a "loop" is started which pulls Fronis Meter data every 800ms (can be modified in the settings file) from the REST-API and updates the values in the DBus

Thats it 😄

Install & Configuration

Get the code

Just grap a copy of the main branche and copy them to /data/dbus-fronius-smart-meter. After that call the install.sh script.

The following script should do everything for you:

wget https://github.com/ayasystems/dbus-fronius-smart-meter/archive/refs/heads/main.zip
unzip main.zip "dbus-fronius-smart-meter-main/*" -d /data
mv /data/dbus-fronius-smart-meter-main /data/dbus-fronius-smart-meter
chmod a+x /data/dbus-fronius-smart-meter/install.sh
/data/dbus-fronius-smart-meter/install.sh
rm main.zip

⚠️ Check configuration after that - because service is already installed an running and with wrong connection data (host, username, pwd) you will spam the log-file

Stop service

svc -d /service/dbus-fronius-smart-meter

Start service

svc -u /service/dbus-fronius-smart-meter

Reload data

/data/dbus-fronius-smart-meter/restart.sh

View log file

cat /data/dbus-fronius-smart-meter/current.log

Change config.ini

Within the project there is a file /data/dbus-fronius-smart-meter/config.ini - just change the values - most important is the host, username and password in section "ONPREMISE". More details below:

Afther change the config file execute restart.sh to reload new settings how to

Section	Config vlaue	Explanation
DEFAULT	AccessType	Fixed value 'OnPremise'
DEFAULT	SignOfLifeLog	Time in minutes how often a status is added to the log-file `current.log` with log-level INFO
ONPREMISE	Host	IP or hostname of on-premise Fronis Meter web-interface
ONPREMISE	MeterID	Your meter ID
ONPREMISE	intervalMs	Interval time in ms to get data from Fronius

Used documentation

https://github.com/victronenergy/venus/wiki/dbus#grid DBus paths for Victron namespace
https://github.com/victronenergy/venus/wiki/dbus-api DBus API from Victron
https://www.victronenergy.com/live/ccgx:root_access How to get root access on GX device/Venus OS

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dbus-fronius-smart-meter's Issues

Freezes when LAN connection is briefly interrupted

EDIT: I'm unable to reproduce my own issue by only unplugging and reconnecting the ethernet cable from the PI. There must be another issue in my LAN.

I noticed that it freezes the last reported value from Fronius SmartMeter after being interrupted from LAN, while other services continue reporting on reconnection (e.g. Fronius Inverter).

Reboot always fixes it.

On Raspberry PI 4 with Venus v2.92

No connection issue

Hi,
I'm having trouble connecting to the meter.
Here is the error msg:
root@raspberrypi2:/data/dbus-fronius-smart-meter# python dbus-fronius-smart-meter.py
2023-09-18 17:01:30,775 root ERROR com.victronenergy.grid
2023-09-18 17:01:30,786 root CRITICAL Error at main
Traceback (most recent call last):
File "dbus-fronius-smart-meter.py", line 248, in main
pvac_output = DbusFroniusMeterService(
File "dbus-fronius-smart-meter.py", line 28, in init
self.dbusservice = VeDbusService("{}.http{:02d}".format(servicename, deviceinstance))
File "/opt/victronenergy/dbus-systemcalc-py/ext/velib_python/vedbus.py", line 78, in init
self._dbusname = dbus.service.BusName(servicename, self._dbusconn, do_not_queue=True)
File "/usr/lib/python3.8/site-packages/dbus/service.py", line 144, in new
raise NameExistsException(name)
dbus.exceptions.NameExistsException: Bus name already exists: com.victronenergy.grid.http_40
root@raspberrypi2:/data/dbus-fronius-smart-meter# /data/dbus-fronius-smart-meter/restart.sh
root@raspberrypi2:/data/dbus-fronius-smart-meter# python dbus-fronius-smart-meter.py
2023-09-18 17:03:07,726 root ERROR com.victronenergy.grid
2023-09-18 17:03:08,621 root CRITICAL Error at main
Traceback (most recent call last):
File "dbus-fronius-smart-meter.py", line 248, in main
pvac_output = DbusFroniusMeterService(
File "dbus-fronius-smart-meter.py", line 52, in init
self._dbusservice.add_path('/Serial', self._getFronisSerial())
File "dbus-fronius-smart-meter.py", line 71, in _getFronisSerial
if not meter_data['Body']['Data']['Details']['Serial']:
KeyError: 'Details'
root@raspberrypi2:/data/dbus-fronius-smart-meter#

The host ip, is the Fronius Inverter IP?

config.ini
[DEFAULT]
AccessType = OnPremise
SignOfLifeLog = 1

[ONPREMISE]
Host=192.168.1.105
MeterID = 1
intervalMs = 800
CustomName = VIR1 Fronius Smart Meter
Role = grid
#Role = acload
#Role = genset
#Role = pvinverter

Thanks for the help

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