Wattsonic

Supported features

Battery control: External control of home battery charging and discharging via evcc.

Usage areas

Grid meter
Solar production
Battery

Parameters

Modbus

Name	Description	Value	Level
`id`	Modbus ID Default: `1`	int	required
`device`	Device name USB-RS485 adapter Example: `/dev/ttyUSB0`		required
`baudrate`	Baudrate Default: `9600`		required
`comset`	ComSet Communication parameter for the adapter Default: `8N1`		required
`host`	IP address or hostname Example: `192.0.2.2`		required
`port`	Port Default: `502`	int	required
`capacity` [kWh]	Battery capacity Example: `50`		optional
`minsoc` [%]	Minimum charge Lower limit when discharging the battery in normal operation Example: `25`		optional
`maxsoc` [%]	Maximum charge Upper limit when charging the battery from the grid Example: `95`		optional
`maxchargepower` [W]	Maximum charge power For forced charging of the battery.		advanced
`maxdischargepower` [W]	Maximum discharge power Maximum discharge power of the storage.		advanced
`delay`	Delay Default: `100ms`		advanced

Configuration example for evcc.yaml

If you don't want to configure via the UI, you can alternatively use this YAML block.

Grid meter Solar production Battery

meters:
    - name: my_grid
      type: template
      template: wattsonic
      usage: grid

      # RS485 via adapter (Modbus RTU)
      modbus: rs485serial
      id: 247
      device: /dev/ttyUSB0 # USB-RS485 Adapter Adresse
      baudrate: 9600 # Prüfe die Geräteeinstellungen, typische Werte sind 9600, 19200, 38400, 57600, 115200
      comset: "8N1" # Kommunikationsparameter für den Adapter

      # RS485 via TCP/IP (Modbus RTU)
      modbus: rs485tcpip
      id: 247
      host:  # Hostname
      port: 502 # Port
      delay: 100ms # Delay, optional

meters:
    - name: my_pv
      type: template
      template: wattsonic
      usage: pv

      # RS485 via adapter (Modbus RTU)
      modbus: rs485serial
      id: 247
      device: /dev/ttyUSB0 # USB-RS485 Adapter Adresse
      baudrate: 9600 # Prüfe die Geräteeinstellungen, typische Werte sind 9600, 19200, 38400, 57600, 115200
      comset: "8N1" # Kommunikationsparameter für den Adapter

      # RS485 via TCP/IP (Modbus RTU)
      modbus: rs485tcpip
      id: 247
      host:  # Hostname
      port: 502 # Port
      delay: 100ms # Delay, optional

meters:
    - name: my_battery
      type: template
      template: wattsonic
      usage: battery

      # RS485 via adapter (Modbus RTU)
      modbus: rs485serial
      id: 247
      device: /dev/ttyUSB0 # USB-RS485 Adapter Adresse
      baudrate: 9600 # Prüfe die Geräteeinstellungen, typische Werte sind 9600, 19200, 38400, 57600, 115200
      comset: "8N1" # Kommunikationsparameter für den Adapter

      # RS485 via TCP/IP (Modbus RTU)
      modbus: rs485tcpip
      id: 247
      host:  # Hostname
      port: 502 # Port
      capacity: 50 # Battery capacity (kWh), optional
      minsoc: 25 # Minimum charge (%), Lower limit when discharging the battery in normal operation (optional)
      maxsoc: 95 # Maximum charge (%), Upper limit when charging the battery from the grid (optional)
      maxchargepower: # Maximum charge power (W), For forced charging of the battery. (optional)
      maxdischargepower: # Maximum discharge power (W), Maximum discharge power of the storage. (optional)
      delay: 100ms # Delay, optional