Omron NT620C, Руководство по эксплуатации

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5-6 Section Clock Function
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5-6 Clock Function
The NT620S/620C 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.
Reference When the voltage of the battery in the NT620S/620C becomes low, the clock
function will not operate correctly when the power is switched off.
5-6-1 About the Clock Function
The clock function uses the numeral memory tables numbered 247 through 255:
these memory tables 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 which is updated by the internal clock of the NT620S/620C.
This data cannot be rewritten by the PC.
Function
Numeral
memory table
Bit Information Value Remarks
Display/reading
l
247 Second 00 to 59 y g
only
248 Minute 00 to 59
249 Hour 00 to 23 24-hour system
250 Date 01 to 31
251 Month 01 to 12
252 Year 00 to 99 Last 2 digits of year
253 Day of week 00 to 06 See below
Setting only
254
0 to 7
8 to 15
16 to 23
24 to 31
Second
Minute
Hour
Date
00 to 59
00 to 59
00 to 23
01 to 31
24-hour system
255
0 to 7
8 to 15
16 to 23
24 to 31
Month
Year
Day of week
Vacant
01 to 12
00 to 99
00 to 06
Always 00
Last 2 digits of year
See below
* The numerical values that correspond to the days of the week are as follows:
Day of
week
Sun Mon Tue Wed Thu Fri Sat
Value 00 01 02 03 04 05 06
Setting example: April 27, 1995, 14:53:30
254
255
27 14 53 30
00 04 95 04
5-6-2 Date and Time Display
In order to display the date or time, an area in which the contents of numeral
memory tables 247 through 253 can be displayed must be set during screen cre-
ation with the support tool.
Numeral memory tables 247 through 253 store clock data which is updated by
the internal clock of the NT620S/620C. This data cannot be rewritten by the PC.