The TeleControl system allows substations to be networked with a control center via WAN (Wide Area Network) or Industrial Ethernet. This control center can also be a SIMATIC terminal or a PC-based control center, for example, WinCC with the SINAUT ST7cc add-on.

SINAUT ST7sc offers suppliers of other control center systems the option of connecting to substations with SINAUT ST7 without having to integrate a SINAUT interface. Communication is over OPC: As an OPC server, SINAUT ST7sc forms the interface between the telecontrol system and the third-party control system connected as an OPC client.

The OPC interface is also suitable for data exchange with other applications, for example, the Microsoft Office application Excel.