Omron NT31 Operation Manuals page 564

Display and Setting of Calendar Clock
S Program operation
When the program is executed after displaying the created screen on the
NT31/NT31C, the operation is controlled as follows.
(1) When bit 00000 comes ON, the date and time (AR 18 to AR 21) set in the PC
is read, and written to words (DM0000 to DM0003) allocated to numeral
memory tables No. 264 and No. 265.
(2) The contents in numeral memory table No. 264 (day, hour, minute, second)
are copied to numeral memory table No. 254, which is used for setting the
clock function.
(3) After waiting about a second for the completion of the memory table copy
operation in step (2), the memory table copy execution bit (10303) is re-
turned to the OFF status.
(4) After a wait of about one second for the NT31/NT31C to confirm that the
memory table copy execution bit has gone OFF, the program copies the
contents of numeral memory table No. 265 (day of the week, year, month) to
numeral memory table No. 255, which is used for setting the clock function,
in the same way as described in steps (2) and (3) above.
The date and time set at the PC is set for the NT31/NT31C and displayed.
Section 8-10
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