Hi,
following the link mentioned in ems plus wiki "Gedankenstütze/Externer Link", https://emswiki.thefischer.net/doku.php?id=wiki:ems:plus-telegramme , I found a hint in https://www.mikrocontroller.net/topic/309075?goto=3928825#3928825 from
Autor: Frank S. (blaueslicht) Datum: 17.12.2014 23:48: for ...

Thermostat related logs below: - you can see types with 0xFF.
Example:
(00:00:45) Thermostat -> all, type 0xFF telegram: 10 00 FF 00 01 67 00 00 (CRC=AB, #data=4)
according https://emswiki.thefischer.net/doku.php?id=wiki:ems:plus-telegramme for EMS+:
Sender : 0x10 // RC35 (my RC310) assumed
Receiver ...

It is a Buderus GB172-14, so sender/receiver Messages from and to Type 0x08 look plausbile.

My main working point are thermostat messages. Below a log picture, where I seperated telegram types which have 0xFF .
For those I applied the EMS+ ( EMS plus ?) rules as described in EMS wiki https ...

corrected last entry

@bbqkees and @proddy: Great work, I much appreciate it!
I'm looking for support of the thermostat Buderus RC310 .

@bbqkees: Could you please add a Buderus RC310 to your nice thermostat list in Github as a starting point? The RC310 picture looks like it is same as Nefit Moduline 3000.

Has anyone ...