ABB Relion 670 Series Applications Manual page 324

Section 14
Control
The content of this function is represented by the IEC 61850 definitions for the logical nodes
Circuit breaker (SXCBR) and Circuit switch (SXSWI) with mandatory functionality.
14.3.5 Proxy for signals from switching device via GOOSE XLNPROXY
The purpose of the proxy for signals from switching device via GOOSE (XLNPROXY) is to give the
same internal representation of the position status and control response for a switch modeled in a
breaker IED as if represented by a SXCBR or SXSWI function.
The command response functionality is dependent on the connection of the execution
information, XIN, from the SCSWI function controlling the represented switch. Otherwise, the
function only reflects the current status of the switch, such as blocking, selection, position,
operating capability and operation counter.
Since different switches are represented differently on IEC 61850, the data that is mandatory to
model in IEC 61850 is mandatory inputs and the other useful data for the command and status
following is optional. To make it easy to choose which data to use for the XLNPROXY function,
their usage is controlled by the connection of each data's signal input and valid input. These
connections are usually from the GOOSEXLNRCV function (see Figure
IEC16000071 V1 EN-US
Figure 129: Configuration with XLNPROXY and GOOSEXLNRCV where all the IEC 61850
318
modelled data is used, including selection
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1MRK 511 401-UUS F
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129 and Figure 130).
Bay control REC670
Application manual