Indeed, but from what I’ve saw, on BMS CAN the info is usually broadcasted by the BMSes and many emulates the Pylontech protocol that it’s well known.
As per VE.CAN, information is transactioned - almost all of it - following the NMEA protocol. The PGNs are easy to find and decode, as their definitions are found over the net.
And Victron registers are also known. Also the way of reading and writing them over the CAN. One of them are directly broadcasted and you just need to listen, others must be asked for.
One just need to like a challenge and write a simple app or script to establish a dialog with Cerbo…
Anyway, thanks for answering and willing to have a discussion over it. 
