Unilogic modbus rtu communication with multiple slaves

[MarinZ]

Hi there! I have simple task of readibg few registar in each of 80 modbus rtu slaves via rs485, and than writing some registar to them. Basicly it's bit for on or off and speed reference, so nothing new. Thing is, with unistream for example b3 model with add on rs485 io, would i have problem doing that on 80 slaves? I worked with visio and i know there were sojme task about time to wait between reading or writing to each slave. Is it same on unilogic, or i can just read all slaves, put data on registar, do something and than write other back to slaves? I know datasheet says slave number is unlimited but would like to hear opinion or some idea. 

 

Thanks!