Fronius Symo Hybrid - Modbus and Data Cabling; Modbus Cabling and Terminating Resistors; Third-Party Battery Data Cable Connections

8
Modbus cabling
and terminating
resistors
A terminating resistor must be used on the outer components of the Modbus cabling. The
location of the terminating resistor on the external battery is fixed, meaning that the battery
cannot be installed in the middle of the Modbus.
*) The R 120 Ohm terminating resistor is supplied with the Fronius Smart Meter
Data cables in the
third-party bat-
tery
Data (Recommended cable:
Li2YCY(TP) or CAT6a)
Data (Recommended cable:
Li2YCY(TP) or CAT6a)
OPTION 1
OPTION 1
NO OPTION
NO OPTION
OPTION 2
OPTION 2
Fronius
Smart
Meter
Fronius
Smart
Meter
Fronius
Smart
Meter
33 34 35
OUTPUT
RS 485
D+ / D- -
120 Ω
*)
OUTPUT
RS 485
D+ / D- -
33 34 35
Battery
Battery
Battery
LG Chem ResuH Fronius Symo Hybrid Fronius Smart Meter
EN GND - (GND) C
ENABLE_H IO 1
RS485_L D- B
RS485_H D+ A