Communication with the inverter
Indication on the
Data retrieval and changes to inverter settings via the Fronius Modbus Card take place in
inverter
the background and are not indicated on the inverter.
However, if the change to the settings has an effect on default values displayed for the in-
verter, this change will of course be visible.
The default values displayed by the inverter can be found in the operating instructions for
the inverter.
Communication
The inverter is connected to the Modbus Master via the Fronius Modbus Card.
with the inverter
The Fronius Modbus Card communicates with the Modbus Master using register address-
es corresponding to the SunSpec specification.
The version of the SunSpec specification currently in use can be found in the document
"Fronius Modbus Card Register Tables".
The latest version of the document "Fronius Modbus Card Register Tables" with the item
number 42,0410,1885 can be obtained from the Fronius DownloadCenter.
The Fronius Modbus Card Register Table contains detailed descriptions of the register ad-
dresses and the inverter data and functions associated with this.
The Fronius Modbus Card Register Table contains a description of the registers in the soft-
ware installed on the card.
In the event of a software update, the latest version of the Fronius Modbus Card Register
Table can be obtained from the Fronius DownloadCenter.
Firmware update
A firmware- update of the Fronius Modbus Card can be performed- via the Modbus inter-
face. The application flow and necessary register commands can be found in the enclosed
register table.
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