Fronius GEN24 Energy Storage System

[clehne]

Fronius Symo GEN 24 ESS bundle.

Note:

• this is an experimental bundle and does not work with standard OpenEMS ESS controllers (due to a bug within the Fronius GEN24 hardware modbus implementation (see readme.adoc and implementation for more)
• This is based on PR #2149 (feature/defaultSunspecUpdateAndEnhancement)

References: see https://community.openems.io/t/laden-entladen-am-fronius-symo-gen24-hybridwechselrichter-mit-modbus/1549

[sfeilmeier]

@clehne I updated some parts of the Code to latest OpenEMS SunSpec. Unfortunately our SunSpecCodeGenerator can still not generate code for "Modules" inside a block. Also I fixed/update a former issue with writeable BitFields recently and applied that for

((BooleanWriteChannel) this.getSunSpecChannelOrError(DefaultSunSpecModel.S124_StorCtl_Mod.CHARGE))
		.setNextWriteValue(true);
((BooleanWriteChannel) this.getSunSpecChannelOrError(DefaultSunSpecModel.S124_StorCtl_Mod.DISCHARGE))
		.setNextWriteValue(true);

Do you have a change to work on this implementation? Also for cleanness we should add a AbstractSunSpec(Managed)SymmetricEss, like we have for PV-Inverters etc.

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