Toshiba 6F3B0253 user manual Real-time clock/calendar Enhanced model only, Program example

6F3B0253

6. Programming Information

6.3 Real-time clock/calendar (Enhanced model only)

The T1-16S enhanced model is equipped with the real-time clock/calendar for year, month, day, day of the week, hour, minute, and second.

These data are stored in the special registers SW07 to SW13 by 2-digit BCD format as follows.

Register	Function	Data
SW07	Year	1999 = H0099, 2000 = H0000, 2001 = H0001, 2002 = H0002 ...
SW08	Month	Jan. = H0001, Feb. = H0002, Mar. = H0003, ... Dec. = H0012
SW09	Day	1st = H0001, 2nd = H0002, 3rd = H0003, ... 31st = H0031
SW10	Hour	H0000, H0001, H0002, ... H0022, H0023
SW11	Minute	H0000, H0001, H0002, ... H0058, H0059
SW12	Second	H0000, H0001, H0002, ... H0058, H0059
SW13	Week	Sun. = H0000, Mon. = H0001, Tue. = H0002, ... Sat. = H0006

Program example:

In the following circuit, output Y030 turns ON for 1 minute at every Sunday 6 pm.

(H0018)

Clock/calendar back up:

The clock/calendar continues updating even while the power to the T1-16S is off by built-in capacitor and by the optional battery (CR2032) if used. Its buck-up period is as follows.

Environment	Expected value		Guarantee value
temperature	Capacitor	Battery	Capacitor	Battery
Under 30 °C (86 °F)	2 hours	2 year	1 hours	1 year
Over 30 °C (86 °F)	1 hours	1 year	30 minutes	6 months

As shown in the table, it is recommended to use the optional battery when the real- time clock/calendar function is used.

In the T1-16S, the validity of the clock/calendar is checked. If the data is not valid by excess power off period, special relay S00A is set to ON. Therefore, when the clock/calendar is used, it is recommended to check the status of S00A in the user program.

Setting the clock/calendar:

To set the clock/calendar data, the following 2 ways are available. In both cases, the week data is automatically calculated.

(1)Setting the clock/calendar data on the system information screen of the programming tool.

(2)Using the Calendar Set instruction (CLND) in the user program.

88 T1-16S User’s Manual