Mitsubishi Electric QJ81DL96 User Manual page 231

10
OTHER FUNCTIONS
(4) Daylight saving time function
March
2nd Sunday
[Before
01:59:59
adjustment]
[After
01:59:59
adjustment]
The daylight saving time function adjusts the time of the high speed data logger
module to daylight saving time using the time of the SNTP server computer.
For daylight saving time function settings, refer to the following section.
 Section 11.4.2 Time synchronization setting
(a) About the daylight saving time function
When "Daylight saving setting" is set, one hour is added to the time at the start of
daylight saving time, and one hour is subtracted from the time at the end of
daylight saving time.
The following is an example of the start and end of daylight saving time.
(Example) When daylight saving time starts at 02:00 on the second Sunday in
March and ends at 02:00 on the first Sunday in November
02:00:00 02:00:01
03:00:00 03:00:01
At the start date switch time,
the time is advanced an hour
(b) Precautions
When specifying the time before and after the start or end time of daylight saving
time with the data logging setting, event logging setting, or report setting, there
may be situations where the correct time cannot be determined.
November
1st Sunday
00:59:59
01:59:59
Daylight saving time
10.1 Time Synchronization Function
01:00:00 01:00:01
01:00:00 01:00:01
At the end date switch
time, the time is set
back an hour
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