GE MiCOM P40 Agile Technical Manual page 438

Chapter 18 - Communications
7.1.5.1 AUTOMATIC EVENT RECORD EXTRACTION
This method is intended for continuous extraction of event and fault information as it is produced. It is only
supported through the rear Courier port.
When new event information is created, the Event bit is set in the Status byte. This indicates to the Master device
that event information is available. The oldest, non-extracted event can be extracted from the IED using the Send
Event command. The IED responds with the event data.
Once an event has been extracted, the Accept Event command can be used to confirm that the event has been
successfully extracted. When all events have been extracted, the Event bit is reset. If there are more events still to
be extracted, the next event can be accessed using the Send Event command as before.
7.1.5.2 MANUAL EVENT RECORD EXTRACTION
The VIEW RECORDS column (location 01) is used for manual viewing of event, fault, and maintenance records. The
contents of this column depend on the nature of the record selected. You can select events by event number and
directly select a fault or maintenance record by number.
Event Record Selection ('Select Event' cell: 0101)
This cell can be set the number of stored events. 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), the remainder of the column contains the additional information.
Fault Record Selection ('Select Fault' cell: 0105)
This cell can be used to select a fault record directly, using a value between 0 and 4 to select one of up to five
stored fault records. (0 is the most recent fault and 4 is the oldest). The column then contains the details of the fault
record selected.
Maintenance Record Selection ('Select Maint' cell: 01F0)
This cell can be used to select a maintenance record using a value between 0 and 4. This cell operates in a similar
way to the fault record selection.
If this column is used to extract event information, the number associated with a particular record changes when
a new event or fault occurs.
Event Types
The IED generates events under certain circumstances such as:
Change of state of output contact
●
Change of state of opto-input
●
Protection element operation
●
● Alarm condition
Setting change
●
Password entered/timed-out
●
Event Record Format
The IED returns the following fields when the Send Event command is invoked:
Cell reference
●
Time stamp
●
Cell text
●
Cell value
●
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