V-TAC VT-6605305 Manuel D'instructions page 28

Table 6-3 Parameters setting
Setting item LCD display Instruction
Enter into the interface and edit the
data through " " or " ". And then
R S 4 85 A dd re ss
press "ENT" again to the next bit.
RS485
0 01 1
Address
After editing the three bits, press
"ENT" to save the edition and press
"ESC" to exit.