That’s been my impression of Schneider, great on AC but their solar stuff is a placeholder for “nobody every got fired for buying Schneider”. I thought they ran Modbus on their comms, pretty sure I’ve seen the modbus maps for them around the Homeassistant forums. Maybe it’s just some equipment, but the Conext is modbus afaik.
I wouldn’t say the “150V” should be operating voltage by default, most SCCs I’ve used put that as the “do not exceed” number, just like the current. I’ve smoked relatively expensive charge controllers by being slightly over either of those numbers. Though Victron seem to be able to take it for a while without cratering.