9424200994 Rev N 191
Sequence of Events
A sequence of events recorder (SER) report is very useful in reconstructing the exact sequence and
timing of events during a power disturbance or even normal system operations. The SER tracks over 700
data points by monitoring the internal and external status of the BE1-11g. Data points are scanned every
quarter-cycle. All changes of state that occur during each scan are time tagged to 1 millisecond
resolution. Over 1,000 records are stored in nonvolatile memory; when the SER memory becomes full,
the oldest record is replaced by the latest one acquired.
The SER monitors the following points and conditions:
• Single-state events such as resetting demands or targets, changing settings, etc.
• Programmable logic variables
• Targets
• Relay trouble alarm variables
• Programmable alarm variables
• Output contact status
• Fault reporting trigger expressions
BE1-11g protection systems have three identification fields: Device ID, Station ID, and User ID. These
fields are used in the header information lines of the sequence of events records. Refer to the
BESTCOMSPlus® Software chapter for information on BE1-11g identification settings.
For user-programmable logic variables (contact sensing inputs, contact outputs, and virtual control
switches), the user-programmed variable name, and state names are logged in the SER report instead of
the generic variable name and state names.
When a monitored event occurs or a monitored variable changes state, the SER logs all event data listed
in Table 74.
Table 74. Event Data Recorded
Description
TIME STAMP
Date of change in format YYYY-MM-DD
Time of change in 24 hour format HH:MM:SS.mmm
Time Sync Status, one of: IRIGB, DNP, NTP, RTC, NO_SYNC
User entered device name string
TYPE
Point Type, one of: ALRM (alarm), CONF (configurable), LGIC (logic), PROT
(protection), STAT (status), TRBL (trouble), TRGT (target), USER (user)
Basler Point Name (not localized to local language)
Localized or user entered string description of point
Localized or user entered string status of point (Open, Closed, Trip, etc.)
Retrieving SER Information
Sequence of events data can be obtained through BESTCOMSPlus and the web page interface.
Viewing and Downloading SER Data through BESTCOMSPlus®
Use the Metering Explorer to open the Reports, Sequence of Events screen. If an active connection to a
BE1-11g is present, the sequence of events will automatically download. Using the Options button, you
can copy, print, or save the Sequence of Events. The Refresh button is used to refresh/update the list of
events. The Clear button will clear all events. The Toggle Sorting button enables sorting. Click on a
column header to sort. See Figure 134.
BE1-11g Sequence of Events
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