I have connected the NGT1 to the NMEA network and can see the BMV-712 using VE.Direct NMEA interface (V1.2) PGN's 127508 and 127506. I can type in the new instance number but it does not stick. I can change the Multi VE.BUS NMEA2000 instances with an issue (PGN 127507 and 127509).
Why won't the battery monitor instances stick?