Modbus - Fronius Tauro 50-3 Operating Instructions Manual

Access point:
The inverter acts as the access point. A PC or smart device connects directly with the
inverter. It is not possible to connect to the internet. The "Network name (SSID)" and
"Network key (PSK)" can be assigned in this menu.
It is possible to operate a connection via WLAN and via access point simultaneously.

Modbus

To use the Modbus TCP or the connection to Fronius Solar.web, each Tauro must be
connected directly to the network via LAN.
Modbus RTU interface 0 / 1
If one of the two Modbus RTU interfaces is set to Slave, the following input fields are
available:
"Baud rate"
The baud rate influences the transmission speed between the individual components
connected in the system. When selecting the baud rate, ensure that it is the same at
both the sending and receiving end.
"Parity"
The parity bit can be used to check the parity. It detects transmission errors. A parity bit
can safeguard a specific number of bits. The value (0 or 1) of the parity bit must be cal-
culated by the sender and is checked by the recipient using the same calculation. The
parity bit can be calculated for even and odd parity.
"SunSpec Model Type"
Depending on the SunSpec model, there are two different settings.
float: SunSpec Inverter Model 111, 112, 113 or 211, 212, 213.
int + SF: SunSpec Inverter Model 101, 102, 103 or 201, 202, 203.
"Meter address"
"Inverter address"
Slave as Modbus TCP
If the function "Slave as Modbus TCP" is activated, the following input fields are avail-
able:
"Modbus port"
Number of the TCP port that is to be used for Modbus communication.
"SunSpec Model Type"
Depending on the SunSpec model, there are two different settings.
float: SunSpec Inverter Model 111, 112, 113 or 211, 212, 213.
int + SF: SunSpec Inverter Model 101, 102, 103 or 201, 202, 203.
"Meter address"
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