unfortunatly the seplos bms only supports pylontech over canbus ( untill they update their firmware)
the rs485 is only meant for pc connections and their management software.
the voltronic's/mpp solar pylontech protocol only uses the rs485 port, while their bms port is a dual canbus/rs485 , they have disabled the canbus part on it, and as they stated, the canbus status so far is "reserved"
i've asked my supplier to push voltronic a bit the enable the canbus, but supplier had little hope he would be able to get it done.
at the same time , i have been pushing seplos to update their firmware to support the pylontech over one of the rs485 ports, but thus far i havent seen any movement.
as i suggested to
@Sanwizard in a pm, it might help if more people start pushing seplos to do so , as i believe it will be easier to get seplos to move rather than voltronic/mpp-solar
i also believe the change would be smaller for seplos to do so in their firmware, since they have both canbus and rs485 active already