Operating Principle
The device continuously polls the inverter once per second and transmits the collected data to a remote server using the IEC 60870-5-104 (IEC-104) communication protocol.
The system’s main controller is based on an ESP32 microcontroller, while RS-485 communication is implemented via a MAX485 driver. Both the battery and inverter communication channels are galvanically isolated from the controller to ensure safety and signal integrity
Power and Communication Interfaces
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AC IN: 230 VAC mains power input
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DC IN: 18–75 VDC auxiliary power input
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SW1: Switch for selecting inverter type (single-phase / three-phase)
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BATT IN: CAN bus interface for battery communication
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INVERTER: CAN / RS-485 communication interface for inverter connection
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ETHERNET: Network interface for Internet connectivity
Controllable Parameters
The following parameters can be remotely configured:
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Battery charge / discharge current limits
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Inverter charge / discharge power and current limits
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Inverter time-of-use (TOU) schedule
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Sell-to-grid function enable / disable
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Sell-to-grid power limit