Fronius IG-TL Serie Manual De Instrucciones página 54

The '0xBF - Get device ID' command shows the identification number that was assigned
0xBF - Get device
to the inverter in addition to the IG number. This is not the IG number.
ID
Query:
Start Length Device / Option Number
Response:
Start Length Device / Option Number
MSB
0x00 0x00 0x00 0x00
The 'AnswerFormat ID' byte returns the UNID of the control board for the respective
inverter. The UNID corresponds to a 32 bit number unique to inverters of the IG Plus
series.
0x01 0x01 0 - 99
0x09 0x01 0 - 99
UNID
LSB
Command Answer FormatID Checksum
0xBF 0x01
Command Answer Format ID
0xBF 0x01
Checksum
48