Toshiba TOSDIC-CIE DS Manual page 34

3. Database Management
Minutely Data
00:01
23:01
Collected Value
23:02
Collected Value
24:00
Collected Value
Figure 3.6 Report Calculation Processing of Integrating-Meter Tag Data
Missing Value
Hourly, daily, monthly and yearly data becomes missing values in the following instances:
(1) Hourly data
In report calculations of hourly data, the hourly data is treated as "missing values" if all
historical tag data collected in one-minute periods within one hour is invalid. In the
following events, historical tag data is treated invalid:
Ÿ A readout error of tag number and atom name.
Ÿ Historical tag data exceeding the maximum tolerable value of the integrating meter or
Ÿ An event condition is not established when an event condition is set up in a historical
(2) Daily data
In making report-calculations of daily data, if all hourly data of one day is missing, the daily
data is treated as "missing values."
(3) Monthly data
In making report-calculations of monthly data, if all daily data of one month is missing
values, the monthly data is treated as "missing values."
(4) Yearly data
In making report-calculations of yearly data, if all monthly data of one year is missing values,
the yearly data is treated as "missing values."
20
Hourly Data
01 o'clock
24-Month
Maximum Value
historical tag data with a minus value is collected from an integrating-meter tag.
tag.
Daily Data
First Day
31-Day
Maximum Value
Minimum Value
Average Value
Total Value
Monthly Data
January
12-Month
Maximum Value
Minimum Value
Average Value
Total Value
Yearly Data
Year
Maximum Value
Minimum Value
Average Value
Total Value