pour info, et pour rappel pour moi, ces flags définissent les capacités de chaque entrée ou sortie de chaque particpant knx (parfois plusieurs dizaines d'e/s par participant..)

Flags

The "flags" parameter is similar to the ETS flags. The value of each flag is represented by a letter:
c : Communication (allow the object to interact with the KNX bus)
r : Read (allow the object to answer to a read request from another participant)
w : Write (update the object's internal value with the one received in write telegram if they are different)
t : Transmit (allow the object to transmit it's value on the bus if it's modified internally by a rule or via XML protocol)
u : Update (update the object's internal value with the one received in "read response" telegram if they are different)
f : Force (force the object value to be transmitted on the bus, even if it didn't change).In the recent versions you can use s : Stateless flag alternatively which means exactly the same (object does not update it's state so linknx should always send it's value to the bus
i : Init (useless for the moment. Will perhaps replace the parameter init="request" in the future)
Each letter appearing inside the value of this parameter means the corresponding flag is set.
If "flags" is not specified, the default value is "cwtu" (Communication, Write, Transmit and Update).

The default set of flags is good for most normal objects like switches where the value kept internally by linknx is corresponding to real object state. Another set of flags can be for example "crwtf" (or "crwts") for objects that should send it's value to the KNX bus even if linknx maintains the same value. This is usefull for scenes. Setting scene value to 'on' should send this value to KNX every time action is triggered to make the scene happen.