General overview

"SGCom is an application extension of the D2000 platform" – Communication with the rest of the application takes place primarily through agreed RPC calls. The application (Ipesoft IMS) must therefore contain specific DODM objects: structure definitions (SD.*), ESL interfaces (I.*), status texts, structured variables (SV.*), and events (E.*). Unlike the system components of the D2000 platform (e.g. D2000 KOM), its configuration is not located in the configuration database but is handled by application scripts.

"It is a modernized alternative to the traditional implementation in D2000 KOM" - The nature of the COSEM protocol and the resulting way of storing values in smart meters meant that the configuration through the line - station - I/O tag cascade was disproportionately large compared to the number of meters, demanding In addition, the application had to support the possibility of adding new measuring devices, changing their settings and the list of measured quantities.

These problems are solved by SGCom communicating with the metering central through RPCs, the structure of which replicates the business requirements of the application. The configuration is stored in the central in relational database and a copy of it is transferred to SGCom (the selected ESL interface contains CRUD operations). According to the configuration, it creates a time schedule for the regular collection of data from the meters. The read data as well as any errors during data collection are persistently stored in the local database. According to the configuration, it also creates a time schedule for the regular transfer of data from the local database to the central office (for load scaling purposes, it may differ from the data collection schedule). The RPC interface also allows the execution of "immediate" tasks outside of the schedule, which are primarily used to re-read historical values from the meter that were not obtained on the scheduled date.

SGCom is implemented in Java 8 and requires JRE version 8 or higher to run. It connects to the D2000 platform via the D2JAPI library and is distributed as a ZIP archive that contains all the necessary libraries as well as a *.bat file template that starts the application. The ZIP archive is available in the artifactory of the D2000 department (http://srvbuild2v.ipstest.sk:8081/artifactory/d2000/sk/ipesoft/sgcom/sgcom/).