In order for the KNXnet/IP driver to translate Group Address data from the encoded native KNX (on the wire) communications it receives from the KNX devices to the human friendly format displayed in the properties of
03_07_02 Datapoint Types v01.08.03 AS.pdf
(or later version).
This information is collectively referred to as the KNX Data Definitions or KNX Data Defs in the KNXnet/IP driver, and it is stored in a file called knx_extra.xml. In addition there is information about the units, minimum & maximum values and compatible
The knx_extra.xml file works along similar lines to KNX’s knx_master.xml file, which is part of the ETS installation and is updated from time to time with new KNX Datapoint Types by the KNX organization. To update the KNX Data Defs, see Updating the KNX Data Defs.
NOTE: The knx_extra.xml file is fundamental to the correct operation of the KNXnet/IP driver and it is internally signed to avoid the possibility of introducing erroneous operation of the KNXnet/IP driver.
Each release of the KNXnet/IP driver contains a version of knx_extra.xml that is current at the time of release, however newer versions of the knx_extra.xml file will be published to keep pace with changes to the KNX knx_master.xml.
NOTE: There is no correlation between the version number of the KNX Data Defs (for example 027
) and the version number of the KNXnet/IP driver module (for example 3.8.41.1.0.29
).