Settings Files And Offline System Configuration; Offline Mode - GE Entellisys DEH-230 System Administrator Manual

8 Settings files and offline system
configuration
All system settings are recorded locally in "Settings" files. These files are updated each time a
setting is modified and automatically updated every 30 minutes.
NOTE: Both CPUs must have the same configuration and settings at all times, otherwise
unpredictable system behavior could occur. Every 30 minutes the system compares the
settings between the CPUs. If a mismatch in settings between CPUs does occur, an event will be
generated. A mismatch should be correctly immediately.

8.1 Offline mode

The HMI has a special offline mode. Offline mode disconnects the HMI from a live system and
allows users to modify and save settings. Later, once reconnected to a live system, these saved
settings can be written to the system.
The following operations are permitted in offline mode:
• User Settings activities
• Maintenance activities
• User Administration
Another convenience offline mode provides is the ability to work on protection settings prior to
the arrival of the switchgear. See Commissioning the switchgear on page 11
8
for more details.
Offline mode 29