Station/Remote Switch Function - ABB COM600 series User Manual

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COM600 series, version 4.1
User's Manual
Figure 3.7-2 LON OPC Server name space in relation to IEC 61850 model

Station/Remote switch function

The COM600 gateway provides a common Station/Remote (S/R) switch functionality
for OPC servers and clients. The S/R switch is used to determine whether the objects in
a logical device of an IED can be controlled within the station, or remotely via a gateway.
A station can have one or more S/R switches. The switches are either physical switches
or software switches in a simulated IED of an OPC server. The S/R switches are modeled
using the IEC 61850 SPS, SPC, DPS, DPC, INS, or INC data class.
Each IED or logical device in an IED is linked with an S/R switch during the configuration
process. If a logical device has no linking information configured, the linking information
of the IED is used instead. At runtime, an OPC server publishes the logical device S/R
switch linking information for the OPC clients of the COM600 gateway. Each time an
OPC client sends a command to a device, it first checks the S/R switch position to
determine whether the operation is allowed or not. The COM600 gateway OPC client
is allowed to operate only if the S/R switch is in remote position.
A COM600 gateway OPC client has the operation modes disabled and enabled for S/R
switch handling. When the switch is in the enabled mode, the values for S/R switch
position failures are Allow controls if position unknown and Reject controls if position
unknown.
HMI is considered a local station HMI, if it uses the local display of the COM600 com-
puter, or if the IP address of the HMI client is in the range specified with a Station IP
1MRS756125
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