OpenEMS

Installation

1. 1Connect the ModbusCloud gateway (MCG or MLP series) to the same local network as the OpenEMS device and ensure Modbus TCP is enabled on the device.
2. 2Verify the IP address of the OpenEMS device and confirm the default Modbus TCP port (typically 502) is accessible from the gateway.
3. 3Import the Fenecon OpenEMS template in the ModbusCloud platform and assign the correct IP address and unit ID to the connection.
4. 4Confirm that register data appears in the ModbusCloud dashboard by checking a known value such as ESS State of Charge against the local device display.
5. 5If using energy manager virtual inputs, map sum_GridActivePower to Gpwr, sum_ProductionActivePower to Ppwr, sum_EssDischargePower to Spwr, and sum_EssSoc to Soc.

Things to watch for

Registers (39)

39 read / 0 write

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