[Edge] Add ESS SMA Sunny Boy Storage 2.5#3727
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Implements the SMA Sunny Boy Storage 2.5 (SBS 2.5) as a ManagedSymmetricEss via Modbus TCP, using the SMA CmpBMS external control interface. Key implementation details: - Non-standard addressing: the SBS 2.5 uses the SMA register number directly as the 0-based Modbus PDU address (confirmed by live device testing) - SoC and Energy registers use FC3 (holding), not FC4 (input) - All 6 CmpBMS control registers must be refreshed within every 60 s window - Includes OpenemsApp (App.Ess.Sma.SunnyBoyStorage) with read-only mode option Tested on SMA Sunny Boy Storage 2.5, firmware 3.x Closes OpenEMS#3222
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Implements the SMA Sunny Boy Storage 2.5 (SBS 2.5) as a ManagedSymmetricEss via Modbus TCP, using the SMA CmpBMS external control interface.
Key implementation details:
Tested on SMA Sunny Boy Storage 2.5, firmware 3.11.14.R
Closes #3222