Is there a way for me to externally adjust the current limits in the Orion XS? I would like to use an ESP8266 or something like it to read alternator RPM, alternator temperature, starter battery voltage and maybe others and then adjust the charge current.
HEX VE Direct protocol document for Orion XS is available here : https://www.victronenergy.fr/upload/documents/Orion-XS-HEX-protocol.pdf
It contains all register information to adjust charge current, and more.