ProSoft Technology PLX8X-MNET-61850 - Manual (Page 152)

Reference PLX8x-MNET-61850 ♦ Communication Gateway
User Manual Modbus TCP/IP to IEC 61850
Page 152 of 228 ProSoft Technology, Inc.
May 14, 2014
Buffered Report Control Block
The BRCB report controls are used by a Client implementing a well-defined
functionality, for example, a SCADA master. If the IEC-61850 Client cannot
access the report, its probably due to access control. When one BRCB for the
IED is in use, no other Clients may access it.
The configuration file gives the IEC-61850 Client driver the following:
 Domain Name
 Data Path
 Report ID
 Enable Flag
 Intpd
 Confrev
 Trgopdchg
 Tag Names
The Tag Names will be a list of the Data Attributes as defined by the DATA-SET
for the report. ProSoft 61850 Configuration Manager parses through the DATA-
SET definition to determine the lowest level of the Data Attributes contained in it
and creates those tags in the configuration file with the proper data type. The
user will be able to choose which elements of the DATA-SET are mapped to
Modbus.
For those DATA-SET Data Attributes that are not mapped, ProSoft 61850
Configuration Manager creates dummy tags as place holders for those data
attributes. The dummy tags take up space in the tag database, even if they are
not mapped to the Modbus driver.
The IEC 61850 driver processes report data from the IED by offsets, not by
actual Data Attribute name. If the DATA-SET on the IED changes, the CID/SCD
file needs to be re-imported in ProSoft 61850 Configuration Manager to
reconfigure the gateway, so that the gateway’s internal processing of the report is
done correctly.
If the BRCB is mapped in the gateway’s configuration, then the IEC 61850 driver
will automatically turn on the Report Enable (RptEna) for the IED’s BRCB.
Unbuffered Report Control Block
URCB data is sent immediately to the connected IEC 61850 Client. If the
transport data flow is not fast enough to support the movement of this data, some
may be lost. The IED can have multiple instances of the URCB data, and in this
case, the IED server manages the separation of the instances transmitted to the
IEC 61850 Clients.
If a URCB is mapped in the gateway’s configuration, then the IEC 61850 driver
will automatically turn on the Report Enable (RptEna) for the IED’s URCB.
The unbuffered reports will be sent automatically from the IED to the gateway
while Report Enable is on.
The IEC 61850 driver and configuration software implements URBCs the same
as BRCBs.