Hey there,
modbus via tls/ssl is around some time and most manufacturer implement this to products (e.g. Schneider, Kostal). Where this is no problem for RO data it becomes a problem for RW actions.
Some registers are locked down to tls connections only. Atm theres no way to work around this. I‘ve read in the pymodbus documentation that tls is implementet. Can this function also be added to the HA integration?