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Figure 4-60 Historical deletion submenu
The historical deletions can be used to remove historical faults, historical feedback,
historical fire alarms and historical operations, and this historical information can be deleted by
selecting relevant option.
Barring special circumstances, the user is not
suggested to delete historical records. As important materials required for
system maintenance, the historical records are kept circularly and the latest
1000 records will be saved; therefore, issues such as excessing storage
capacity and failing to record will not occur.
4.6 Special operations
The menu of special operations is as shown below:
Figure 4-61 Menu of special operations
The special operations are only for system debugging and
maintenance. Therefore, they are restricted to developers and debuggers of our
company. The menu options of SPECIAL OPERATIONS are not optional (grey)
when logging in the system as the system administrator.
4.6.1 USB equipment data backup
Back up the system data into U disk. U disk is a standard device and the standard USB
interface is available on the system. Please format U disk by a card reader on a standard PC
before usage. The capacity of U disk for data backup shall be greater than 2M. The system
prompt is as follows: