Modbus RTU slave
e. g. Fronius Ohmpilot, Fronius Solar Battery, etc.
Loads in the system
e. g. washing machine, lamps, TV, etc.
Additional loads in the system
e. g. heat pump
Additional producers in the system
e. g. wind power plant
Terminating resistor
R 120 Ohm
Modbus parti-
cipants - Fronius
SnapInverter
A maximum of 4 Modbus participants can be connected to the Modbus terminal.
IMPORTANT!
Only one primary meter, one battery and one Ohmpilot can be connected per inverter.
Due to the high data transfer of the battery, the battery occupies 2 participants.
Example:
Input Battery
Fronius
Ohmpilot
Quantity
Primary
meter
Quantity
Secondary
meter
Modbus
1 0
1 1
1 2
1 3
Multi-meter sys-
tem - Fronius
SnapINverter
If several Fronius Smart Meters are installed, a separate address must be set for each
one (see Setting the address of the Fronius Smart Meter on page 20). The primary
meter is always assigned address 1. All the other meters are numbered consecutively
with the address range from 2 to 14. Different Fronius Smart Meter power categories can
be used in combination.
IMPORTANT!
Use max. 3 secondary meters in the system. To avoid interference, it is recommended to
install the terminating resistors according to chapter Terminating resistors on page 14.
17
EN