15: WEEK PROGRAMMER INSTRUCTIONS
OPENNET CONTROLLER USER’S MANUAL 15-7
Setting Calendar/Clock Using WindLDR
Before using the week programmer instructions for the first time, the internal calendar/clock must be set using WindLDR or
executing a user program to transfer correct calendar/clock data to special data registers allocated to the calendar/clock.
Once the calendar/clock data is stored, the data is held by the backup battery while the CPU power is turned off.
1. Select Online from the WindLDR menu bar, then select Monitor. The screen display changes to the monitor window.
2. From the Online menu, select PLC Status. The OpenNet PLC Status dialog box is displayed. The current calendar/
clock data is read out from the OpenNet Controller CPU and displayed in the Calendar box.
3. Click the Change button in the Calendar box. The Set Calendar and Time dialog box comes up with the date and time
values read from the computer internal clock.
4. Click the Down Arrow button on the right of Calendar, then the calendar is displayed where you can change the year,
month, and date. Enter or select new values.
5. To change hours and minutes, click in the Time box, and type a new value or use the up/down keys. When new values
are entered, click the OK button to transfer the new values to the CPU.
Setting Calendar/Clock Using a User Program
Another way of setting the calendar/clock data is to move the values to special data registers dedicated to the calendar and
clock and to turn on special internal relay M8020 by executing a user program. Data registers D8015 through D8021 do
not hold the current values of the calendar/clock data but hold unknown values before executing a user program.
Calendar/Clock Special Data Registers
Note: The day of week value is assigned for both current and new data as follows:
Data Register No. Data Value Read/Write Updated
D8008 Year (current data) 0 to 99
Read only
100 msec or one scan
time whichever is larger
D8009 Month (current data) 1 to 12
D8010 Day (current data) 1 to 31
D8011 Day of week (current data) 0 to 6 (Note)
D8012 Hour (current data) 0 to 23
D8013 Minute (current data) 0 to 59
D8014 Second (current data) 0 to 59
D8015 Year (new data) 0 to 99
Write only Not updated
D8016 Month (new data) 1 to 12
D8017 Day (new data) 1 to 31
D8018 Day of week (new data) 0 to 6 (Note)
D8019 Hour (new data) 0 to 23
D8020 Minute (new data) 0 to 59
D8021 Second (new data) 0 to 59
0123456
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