The latest version of CTT3.0 is V109 issued on 6th November 2017.
The latest version of CTT3.1 is V107 issued on 23rd October 2018.
The latest version of the Object definitions file is V3.3 issued on 1st June 2018.
The DLMS UA Blue Book models metering functions using the COSEM object model that comprises the COSEM interface class (IC) specifications and the OBIS Object Identification System.
The OBIS codes are the Logical Names of the COSEM objects, i.e. the instances of COSEM interface classes.
The combination of the interface class_id and the OBIS code always uniquely identifies each and every object within the server.
The COSEM object definitions file specifies the standard combinations of COSEM interface classes and OBIS codes. It also specifies the data types allowed in those cases where the Blue Book allows a CHOICE.
A new version is generated when:
Currently, the following media are supported:
The CTT uses .dat files generated from the COSEM object definition spreadsheet files. They can be downloaded from the Euro DCS DLMS-CTT site, using the CTT credentials.
The appropriate .dat files have to be saved in the directory where the CTT is installed.