Terminating Resistors - Explanation Of Symbols; Terminating Resistors - Fronius Smart Meter 240V-3 UL Instructions De Service

Terminating res-
istors - explana-
tion of symbols
Terminating Res- The system might work without terminating resistors. Due to interferences, the use of ter-
istors minating resistors according to the following schemes are recommended.
16
Inverter in the system
e.g. Fronius Symo
Meter - Fronius Smart Meter
Terminating resistor is integrated in the meter.
Modbus RTU slave
e.g. Fronius Ohmpilot, Fronius Solar Battery, etc.
Termination resistance
R 120 Ohm
Modbus Adress 3 (value 1 + 2 = 3)
DIP Switch 1 2
Position 1 1
Modbus Adress 4
DIP Switch 1 2
Position 0 0
Modbus Adress 7 (value 1 + 2 + 4 = 7)
DIP Switch 1 2
Position 1 1
Modbus Adress 20 (value 4 + 16 = 20)
DIP Switch 1 2
Position 0 0
Activate the Fronius Smart Meter terminat-
ing resistor (R 120 Ohm) by switching pin
7 to ON (1).
3 4 5 6
0 0 0 0
3 4 5 6
1 0 0 0
3 4 5 6
1 0 0 0
3 4 5 6
1 0 1 0