Clock Function - Mitsubishi MELSEC-Q Series User Manual

4
FUNCTIONS

4.8 Clock Function

(1) What is clock function?
The clock function allows reading of the clock data in the C Controller module by a
user program to use them for time control.
The clock data are mainly used for the time control of the functions performed by the
C Controller module system, such as date and time data saving into the event history.
(2) Clock operation at power-off and momentary stop
Even if the C Controller module is powered off or failed for longer than the permissible
momentary stop time, the clock is kept operated by the battery in the C Controller
module.
(3) Clock data
The following clock data are used in the C Controller module.
Table4.19 Clock data details
Data name
Year
Month
Day
Hour
Minute
Second
Day of week
Description
4 digits (Available from 2000 to 2099)
1 to 12
1 to 31 (Automatic leap year detection)
0 to 23 (24-hour system)
0 to 59
0 to 59
0
1
2
3 Wednesday
4
5
6
4.8 Clock Function
Sunday
Monday
Tuesday
Thursday
Friday
Saturday
4
- 60
1
2
3
4
5
6
7
8