Settings – Modbus
General remarks With a web browser, you can use the Fronius system monitoring web page to make set-
tings for the Modbus connection that are not accessible via the Modbus protocol.
Further informa-
tion about the
Modbus function
For further information about the Modbus function, please see the following Operating
Instructions:
http://www.fronius.com/QR-link/4204102049
42,0410,2049
Fronius Datamanager Modbus TCP & RTU
http://www.fronius.com/QR-link/4204102108
42,0410,2108
Fronius Datamanager Modbus RTU Quickstart Guide
Exporting data
via Modbus
"Exporting data via Modbus" on "off"
If exporting data via Modbus is deactivated, transmitted control commands sent over
Modbus to the inverters, e.g. no power reduction or no reactive power specification, are
reset.
"Exporting data via Modbus" on "tcp"
If exporting data via Modbus is deactivated, transmitted control commands sent over
Modbus to the inverters, e.g. no power reduction or no reactive power specification, are
reset.
"Modbus port" field - Number of the TCP port that is to be used for Modbus communica-
tion. Initial setting: 502. Port 80 cannot be used for this.
"String Control Address Offset" field - Offset value for addressing the Fronius String
Controls via Modbus.
"Sunspec Model Type" - For selecting the data type of data models for inverters and of
data models for energy meters
"float" - Display as floating point numbers
SunSpec Inverter Model I111, I112 or I113
SunSpec Meter Model M211, M212 or M213
"int+SF" - Display as whole numbers with scaling factors
SunSpec Inverter Model I101, I102 or I103
SunSpec Meter Model M201, M202 or M203
IMPORTANT! Since the various models have different numbers of registers, switching
the data type also changes the register addresses for all subsequent models.
"Demo mode" - Demo mode is used to implement or validate a Modbus master. It
enables inverter, energy meter and Fronius string control data to be read out, even if no
device is actually connected or active. The same data is always returned for all registers.
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