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P746/EN SC/G31 SCADA Communications
(SC) 13-
22
MiCOM P746
SC
The disturbance record status register will report one of the following values:
State Description
Idle This will be the state reported when no record is selected; such
as after power on or after a record has been marked as extracted.
Busy The relay is currently processing data.
Page ready The data page has been populated and the master station can
now safely read the data.
Configuration
complete All of the configuration data has been read without error.
Record complete All of the disturbance data has been extracted.
Disturbance
overwritten An error occurred during the extraction process where the
disturbance being extracted was overwritten by a new record.
No unextracted
disturbances An attempt was made by the master station to automatically
select the next oldest unextracted disturbance when all records
have been extracted.
Not a valid
disturbance An attempt was made by the master station to manually select a
record that did not exist in the relay.
Command out of
sequence The master station issued a command to the relay that was not
expected during the extraction process.
3.6.2 Procedure
The following procedure will be used to extract disturbances from the relay. The procedure
is split into four sections:
1. Selection of a disturbance – either manually or automatically
2. Extraction of the configuration file
3. Extraction of the data file
4. Accepting the extracted record (automatic extraction only)