SAX SAX Power Home (Plus)

← PV, Battery, Grid, Meter

For battery control, registers 40044/40045 (43/44) must be enabled by technical support. The device's serial number is required for this.

Supported features

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

Usage areas

Grid meter
Battery

Parameters

Name	Description	Value	Level
`id`	Modbus ID Default: `1`	int	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
`watchdog`	Watchdog Default: `240s`		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 Battery

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

      # Modbus TCP
      modbus: tcpip
      id: 64
      host:  # Hostname
      port: 502 # Port
      watchdog: 240s # Watchdog, optional

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

      # Modbus TCP
      modbus: tcpip
      id: 64
      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)
      watchdog: 240s # Watchdog, optional