SINAUT ST7s is installed on a Windows PC. The OPC server function supports connection of one or more client applications. These clients are either connected over a suitable communication medium, e.g. Industrial Ethernet, with the server or they are installed on the same PC as SINAUT ST7sc.

Connection of one or more telecontrol substations to the ST7sc PC is carried out either via the MPI bus or Industrial Ethernet, depending on the TIM communication module used.

Provision of current time of day:

• For TIMs, that are connected over MPI to the ST7sc PC, time synchronization is only possible through a DCF77 receiver equipped with a TIM. This provides central time synchronization for the ST7sc PC and all other stations.
• For TIMs that are connected over Industrial Ethernet to the ST7sc PC, time synchronization is performed over ST7sc.

Outside the reception area of the DCF77 real-time transmitter the use of a GPS receiver is recommended. This determines the local time from the satellite-based global positioning system (GPS).