The Xantrex is a LinkLite which basically only monitors the current in/out and displays percentage of charge.
Doesn't compare to the SBMS0 but in the position that it is in, it allows a quick glance without getting to technical.
there is just that ON/OFF button will remain in the OFF position and the SBMS0 will be the one to turn the inverter ON.
The inverter is only turned ON when there is a need for 240vac, such as the Microwave Coffee maker etc.
So most of the day it is off. We turn the manual switch to ON if we want it ON, so if the SBMS0 turns it ON, then nothing will happen until
the switch is set to ON and then the signal from the SBMS0 will get through to the remote control of the Inverter.
I haven't read most of the manual yet, but unless there is a convenient touch button to turn ON the Inverter, I would leave the inverter enabled
by the SBMS0 until an alarm condition forces it OFF.
You made me aware that I didn't have a Load control relay in the circuit. Currently I have a 100A SSR controlled by a Junsi that monitors cell voltages only.
Maximum load is no more than 15A.
So I will wire that to one of the EXTIO so that the SBMS0 can switch OFF all loads should the need arise.