Consulting @ Drewag GmbH

At the public utility company in the East German city of Dresden ascolab GmbH validated and advised an OPC connection between the heat and power distribution and the supplying plants in the urban area. Several "WinCC Servers" (Siemens AG), were connected via a redundancy-driver (Proxy-Server) to an Unix/Solaris based supervisory control system "Viewstar 750" (Cegelec GmbH & Co. KG). The redundancy-driver has been developed by Cegelec GmbH & Co. KG and allows to connect OPC-DA-Clients to redundant OPC-DA-Servers. For the development of the UNIX/Solaris based OPC-Client from Cegelec GmbH & Co. KG, the software product "EntireX-DCOM " from Software AG was used.