ABB COM600 series Data Historian Operator's Manual page 74

Figure 5.4-2 Time bar
74
COM600 series, Version 5.0
Data Historian Operator's Manual
The display's update mode is determined in the following way, depending on the left
and right pin:
Normally updated display. If the time span is changed, the time scale
--
and the time at the left end of the time span change accordingly and the
display continues to be refreshed.
Unrefreshed display. If you change the time span, both times change
--
by an amount equal to half of the modified time difference and the time
scale changes.
Unrefreshed display. If you change a locked time, the time scale moves
-- or --
by an amount equal to the modified time difference. If you change the
time span, the unlocked time moves by an amount equal to the modified
time difference and the time scale changes.
Unrefreshed display. If you change a locked time, the time scale changes
--
by an amount equal to the modified time difference.
The display is updated and the time scale keeps expanding . If you
--
maintain a locked time, the time scale changes by an amount equal to
the modified time difference and the display continues to be updated.
Time bar
Table 5.4-1 Time bar display terms and buttons
Button
Time span
The time next to the pin is unlocked
The time next to the pin is locked
The display causes a load on the system.
Description
The time span – that is, the difference between the start and
end time – is displayed in the boxes in the middle of the time
bar when at least one of the time span's ends is unlocked
or updated . The value and unit of the interval are displayed
in their own text boxes. To change the interval, change either
the value and/or unit. An inexact interval is indicated in the
following way:
The graphs are redrawn after each change.
1MRS756739
Time_bar_row.jpg