The figure on the left shows the Modbus TCP/IP Gateway architecture:

· Provides individual mapping of 61850 attributes to Modbus registers, described with the IEC 61850 SCL file

· Contreolling direction supports mapping of the following IEC61850 ACSI

  operations: ASSOCIATE, RELEASE, SETDATAVALUES, OPERATE

· Monitoring direction supports mapping of the following IEC61850 ACSI operations:

  GETDATAVALUES, REPORT INDICATION, GOOSE INDICATIONS, SV INDICATIONS

Some of the Solution advantages:

· Software gateway architecture for Window / Linux, no need for proprietary hardware

· Configuration by editing SCL files. No programming necessary, runtime updates

· Scalable architecture can handle complex Modbus networks

· Seamless integration with Xelas Energy IEC61850 Product line

: Example implementation of the IEC 61850 Server to Modbus TCP/IP Gateway

The figure on the left shows the example on how to use the IEC Modbus Gateway in a substation to integrate all IEC 61850 and Modbus TCP./IP devices into a high-level CIM compatible Object Model.

· The SCL-files for the substation captures both the parameters for the Xelas Client and Server, including the translations to Modbus

· The Substation Gateway interfaces directly with all 61850 equipment devices. To connect with the Modbus-devices, the Xelas Client connects via the IEC Modbus gateway to the Modbus devices

· The north bound interface CIM interface is exposed by the 61850 Client DE vcia XML Web Services

· Xelas products used:

 · 61850 Client Development Environment withn MMS, SV, GOOSE protocol support.

  The 61850 Client DE has integrated SQL support, Scripting interface and JAVA Web GUI

 · IEC Modbus Gateway

 · 61850 Client northbound XML interface, including CIM mediation adaptor

Some of the Solution advantages:

· Different products used within the solution can be run on different platforms and different layers in the substation

· Object-model based logic is far more reliable and maintainable than the linear logic currently used for Modbus devices

· Migration form devices, currently using Modbus-but gradually migrating to IEC 61850, cna be done purely through software configuration

· process logic between Modbus and 61850 devices is completely captured in the SCL

· Configuration by editing SCL files. NO programming necessary