4-10 L60 Line Phase Comparison System GE Multilin
4.2 EXTENDED ENERVISTA UR SETUP FEATURES 4 HUMAN INTERFACES
4
The following window is displayed.
Figure 4–10: TYPICAL SETTINGS FILE PROPERTIES WINDOW
3. Enter the serial number of the L60 device to lock to the settings file in the Serial # Lock field.
The settings file and corresponding secure FlexLogic™ equations are now locked to the L60 device specified by the serial
number.
4.2.3 SETTINGS FILE TRACEABILITY
A traceability feature for settings files allows the user to quickly determine if the settings in a L60 device have been
changed since the time of installation from a settings file. When a settings file is transfered to a L60 device, the date, time,
and serial number of the L60 are sent back to EnerVista UR Setup and added to the settings file on the local PC. This infor-
mation can be compared with the L60 actual values at any later date to determine if security has been compromised.
The traceability information is only included in the settings file if a complete settings file is either transferred to the L60
device or obtained from the L60 device. Any partial settings transfers by way of drag and drop do not add the traceability
information to the settings file.
Figure 4–11: SETTINGS FILE TRACEABILITY MECHANISM
With respect to the above diagram, the traceability feature is used as follows.
2
The serial number and last setting change date
are stored in the UR-series device.
The serial number of the UR-series device and the file transfer
date are added to the settings file when settings files
are transferred to the device.
842864A1.CDR
Compare transfer dates in the settings file and the
UR-series device to determine if security
has been compromised.
1
SETTINGS FILE TRANSFERRED
TO UR-SERIES DEVICE
SERIAL NUMBER AND TRANSFER DATE
SENT BACK TO ENERVISTA AND
ADDED TO SETTINGS FILE.
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