We have a MultiPlus 12/3000/120-16, Cerbo, Orion Jr2 BMS etc. On Cerbo we have 4 modes for MultiPlus: "Off", "Charger Only", "Inverter Only" and "On".
What I'm missing is "AC direct", meaning no charging, no inverting, just AC coming from shore power and going to our 240v outlets.
In our old system, before LiFePO4 and MultiPlus we had a relay doing this. Now with all these "smart systems" we thought that they could be configured the way we want to. But so far haven't found a way.
We would hate rewire everything and go back to an "external" relay.
Our solar panels can handle our DC demand, so there is no need to charge the batteries while plugged into shore power. We just want to be able to use 240v appliances without turning everything on and off all the time. Our system is basically designed to be used off-grid, but every once in a while we find ourselves in a marina...