
Modbus TCP
Wattsonic wattsonic (battery)
Wattsonic
Overview
The Wattsonic hybrid inverter is a residential and light-commercial PV storage system that combines solar conversion and battery management in one unit. This ModbusCloud template connects to the wattsonic over Modbus TCP via the inverter's built-in LAN dongle at port 502. It reads battery power flow and state of charge, and exposes the on-grid discharge end SOC setpoint for remote control. With live battery power and SOC visible in your portal, you can track storage behavior, automate charge protection, and verify that the system responds correctly to grid conditions.
Use cases
- Monitor battery power in real time to verify the Wattsonic is charging from surplus PV and not drawing from the grid unexpectedly.
- Track state of charge over time to detect gradual capacity fade across seasons and flag batteries that no longer reach full charge.
- Alert on SOC dropping below a threshold during peak evening hours to catch inverter misconfiguration before it affects self-consumption.






