I got this solved. It was just a matter of configuring the Victron communication port that goes to the battery to have the correct baud rate, 500 kbps...

@JB The inverter is a Victron Multiplus II, 48V, 3KVA unit. I'm also going to use a Cerbo GX and a GX touch 50 display In the ideal...

@JB Thanks for your response. I'm hoping Victron can do this. @jared Ok, looks like closed loop is definitely the way to go. Is there a doc...