Toshiba T2N - Manual (Page 135)

5.RAS Functions
122 PROSEC T2N
When an error is detected by the T2N diagnostics the details and time of
occurrence are registered in the event history table (besides errors, the times
power ON/OFF are also registered). The 30 recentest occurrences of errors are
registered in the event history table. As new data is registered, the data registered
previously is shifted down in sequence, and the oldest data is deleted.
Use the event history table for maintenance since with the programmer
connected you can display and details as on the following diagram. The details
on the event history table are stored until executing the event history clear
command or the memory clear command from the programmer.
*) When the calendar is not set initially or the calendar data is not backed up,
event history is registered with the date and time displayed as “??-??-
?? ??:??:??”.
The meaning of each item on the screen above is as follows.
(1) Number (1-30)
Indicates order of occurrence. Number one is the recentest.
(2) Date (year-month-day)
Indicates the date of occurrence. This is shown as “??-??-??” if the
calendar data malfunctions.
(3) Time (hours:minutes:seconds)
Indicates the time of occurrence. This is shown as “??-??-??” if the
calendar data malfunctions.
5.3
Event history