Alstom MiCOM P846, Technical Manual

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P846/EN SC/D SCADA Communications
(SC) 13-14
MiCOM P846
SC
846/EN MD, contains a table of the events created by the relay and
ntents of the above fields are interpreted. Fault records and
These events contain additional information that is extracted from the relay using the
on column. Row 01 of the extraction column contains a setting that allows
ce record to be selected. This setting should be set to the event number
2.5.4
Column 01 of the database can be used for manual viewing of event, fault, and maintenance
is column will depend on the nature of the record selected. It is
event number and to directly select a fault record or
ct the most recent record; 511 the
irectly select a fault record
can be used to select a maintenance
record using a value between 0 and 4 and operates in a similar way to the fault record
ion from the relay the
number associated with a particular record will change when a new event or fault occurs.
2.6
This cell can be used to select the record to be extracted.
tracted record, already extracted older records will be
ues, and negative values will be used for more recent records. To
on via the rear port the disturbance bit of the status byte is set by
ere are unextracted disturbance records.
g the above cell, the time and date of the record can
be read from cell 02. The disturbance record itself can be extracted using the block transfer
used to automatically extract disturbance
records as they occur. This operates using the standard Courier mechanism defined in
urier User Guide. The front Courier port does not support automatic
extraction although disturbance record data can be extracted manually from this port.
The menu database, P
indicates how the co
maintenance records will return a Courier Type 3 event, which contains the above fields
together with two additional fields:
−
Event extraction column
−
Event number
referenced extracti
the fault/maintenan
value returned within the record; the extended data can be extracted from the relay by
uploading the text and data from the column.
Manual event record extraction
records. The contents of th
possible to select events by
maintenance record by number.
Event Record Selection (Row 01) - This cell can be set to a value between 0 to 511 to select
which of the 512 stored events is selected, 0 will sele
oldest stored record. For simple event records, (Type 0) cells 0102 to 0105 contain the
event details. A single cell is used to represent each of the event fields. If the event
selected is a fault or maintenance record (Type 3) then the remainder of the column will
contain the additional information.
Fault Record Selection (Row 05) – This cell can be used to d
using a value between 0 and 4 to select one of up to five stored fault records. (0 will be the
most recent fault and 4 will be the oldest). The column will then contain the details of the
fault record selected.
Maintenance Record Selection (Row F0) – This cell
selection.
It should be noted that if this column is used to extract event informat
Disturbance record extraction
Select Record Number (Row 01) -
Record 0 will be the oldest unex
assigned positive val
facilitate automatic extracti
the relay whenever th
Once a record has been selected, usin
mechanism from cell B00B.
As has been stated, the rear Courier port can be
Chapter 8 of the Co