Max nuber of PZEM-004T V3 on one bus

hi all so i was wondering what is the max amount of PZEM-004T V3 i could use on a single bus

but i was also thinking of useing ttl to rs845 converter too

so it would be mcu<–>ttl rs485<–>ttl rs485<—>PZEM-004T V3

would this work

ho and i know each PZEM-004T V3 will need its own address

becouse from what i being reading most have issues with more then 4 at a time and i hopeing to use atleast 80 at once