Using this version of DalyBMSMonitor, I was able to monitor three BMS on the same RS485 bus.
To change the board number, connect each BMS SEPARATELY first, go the tab "Engineering model" and find on the right side "Read" next to "BoardNo:". Initially this will show "1". Change this to a number between 1 and 8 and press "Set". Then you need to change the board number tab above to the number you've just chosen and go to the tab "Data monitoring". Repeat these steps for all of your BMS.
DISCLAIMER: I JUST TESTED THIS ON THREE BMS THAT WERE ALL IN PARALLEL. I AM NOT SURE, IF YOU CAN CONNECT BMS OF BATTERIES THAT ARE IN SERIES (i.e. two 12V batteries forming a 24V system).
You need to upgrade the BMS firmware on each of your BMS first (see other ressource "DalyBmsApp_20210216B.s19").
To change the board number, connect each BMS SEPARATELY first, go the tab "Engineering model" and find on the right side "Read" next to "BoardNo:". Initially this will show "1". Change this to a number between 1 and 8 and press "Set". Then you need to change the board number tab above to the number you've just chosen and go to the tab "Data monitoring". Repeat these steps for all of your BMS.
DISCLAIMER: I JUST TESTED THIS ON THREE BMS THAT WERE ALL IN PARALLEL. I AM NOT SURE, IF YOU CAN CONNECT BMS OF BATTERIES THAT ARE IN SERIES (i.e. two 12V batteries forming a 24V system).
You need to upgrade the BMS firmware on each of your BMS first (see other ressource "DalyBmsApp_20210216B.s19").