M-TEC Energy Butler GEN3

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

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: mtec-eb-gen3
      usage: grid

      # RS485 via adapter (Modbus RTU)
      modbus: rs485serial
      id: 255
      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: 255
      host:  # Hostname
      port: 502 # Port

      # Modbus TCP
      modbus: tcpip
      id: 255
      host:  # Hostname
      port: 502 # Port

meters:
    - name: my_pv
      type: template
      template: mtec-eb-gen3
      usage: pv

      # RS485 via adapter (Modbus RTU)
      modbus: rs485serial
      id: 255
      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: 255
      host:  # Hostname
      port: 502 # Port

      # Modbus TCP
      modbus: tcpip
      id: 255
      host:  # Hostname
      port: 502 # Port

meters:
    - name: my_battery
      type: template
      template: mtec-eb-gen3
      usage: battery

      # RS485 via adapter (Modbus RTU)
      modbus: rs485serial
      id: 255
      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: 255
      host:  # Hostname
      port: 502 # Port

      # Modbus TCP
      modbus: tcpip
      id: 255
      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)