4 Special Functions
3-102 SmartAXIS Touch User's Manual
● Adjusting the Date and Time with Ladder Program or FBD Program
The current time can be set on the Touch by using special data registers D8015 to D8021. Undefined values are
stored in special data registers D8015 to D8021. Always store an appropriate value before turning on M8016, M8017,
or M8020.
■ Calendar Data Write Flag (M8016)
After writing data to special data registers D8015 to D8018, turn M8016 on to set the internal clock with the data in
D8015 to D8018 as the calendar data (year, month, day, day of the week).
■ Clock Data Write Flag (M8017)
After writing data to special data registers D8019 to D8021, turn M8017 on to set the internal clock with the data in
D8019 to D8021 as the clock data (hour, minute, second).
■ Calendar/Clock Data Write Flag (M8020)
After writing data to special data registers D8015 to D8021, turn M8020 on to set the internal clock with the data in
D8015 to D8021 as the calendar data (year, month, day, day of the week) and the clock data (hour, minute, second).
Calendar and clock data storage locations
The calendar/clock data is stored in the following special data registers.
For the day of the week data, the values below are stored in the special data registers.
Special data
register
Description Range Setting timing
D8008
Calendar/Clock
Current Data
(Read only)
Year 0 to 99
Every 500 msec
If the scan time is 500 msec
or longer, D8008 to D8014 are
updated with each scan.
D8009 Month 1 to 12
D8010 Day 1 to 31
D8011 Day of the week 0 to 6
D8012 Hour 0 to 23
D8013 Minute 0 to 59
D8014 Second 0 to 59
D8015
Calendar/Clock
New Data
(Write only)
Year 0 to 99
–
D8016 Month 1 to 12
D8017 Day 1 to 31
D8018 Day of the week 0 to 6
D8019 Hour 0 to 23
D8020 Minute 0 to 59
D8021 Second 0 to 59
Day of the
week
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Value0123456
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