Clock Function; About The Clock Function; Date And Time Display - Omron NT30C-ST141-E Operation Manual

Clock Function

5-6

Clock Function

5-6-1 About the Clock Function

Reference
Function
Display/reading
only only
Setting only

5-6-2 Date and Time Display

234
The NT30/30C has a clock function for setting the date and time.
This section explains how to set the date and time, and how to notify the date and
time to the PC.
The clock function uses the numeral memory table entries numbered 247
through 255: these memory table entries are used exclusively for clock data.
As shown in the table below, numbers 247 through 253 are for display and read-
ing only, and numbers 254 and 255 are for time setting. Numbers 247 through
253 store clock data that is updated by the internal clock of the NT30/30C. This
data cannot be rewritten by the PC.
When the NT battery voltage drops, the clock function cannot operate correctly
when the power is switched OFF.
Numeral
memory table Bit
entry number
247
248
249
250
251
252
253
0 to 7
8 to 15
254
16 to 23
24 to 31
0 to 7
8 to 15
255
16 to 23
24 to 31
* The numerical values that correspond to the days of the week are as follows:
Day of
Sun
week
Value 00
Setting example: April 27 (Thu), 1995, 14:53:30
254 27 14 53
255 00 04 95
In order to display the date or time, an area in which the contents of numeral
memory table entries 247 through 253 can be displayed must be set during
screen creation with the NT-series Support Tool.
Numeral memory table entries 247 through 253 store clock data that is updated
by the internal clock of the NT30/30C. This data cannot be rewritten by the PC.
Information Value
Second 00 to 59
Minute 00 to 59
Hour 00 to 23
Date 01 to 31
Month 01 to 12
Year 00 to 99
Day of week 00 to 06
Second 00 to 59
Minute 00 to 59
Hour 00 to 23
Date 01 to 31
Month 01 to 12
Year 00 to 99
Day of week 00 to 06
Vacant Always 00
Mon Tue Wed
01 02 03
30
04
Section 5-6
Remarks
24-hour system
Last 2 digits of year
See below
24-hour system
Last 2 digits of year
See below
Thu Fri Sat
04 05 06