TeSys island bus coupler, point of connection between a TeSys island configuration (group of starters) and an automation system over PROFIBUS DP. It performs all functions for the application (TeSys avatars), selectable and configurable through SoMove or MachineExpert. For diagnostics and maintenance of the TeSys island, a web server (OMT) is embedded. To be supplied externally by 24V DC, it provides one D-Sub port for PROFIBUS DP, one RJ45 service port over Ethernet, one micro SD card port, and a port for the internal bus interconnecting the modules of the island. Mounting on DIN rail, together with the other modules of the TeSys island configuration, the bus coupler is the module on the most left position. Multi standards certified (IEC, UL, CSA, CCC, EAC), cybersecurity Achilles Level 2 certified.