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4. Display design
Figure 1 shows an example of an application with
two pumps.
Fig. 1
Example of an application with two pumps
Menu line
The display has four main menus:
Status:
Indication of system status.
Daily changes of operating
Operation:
parameters (access code option).
Alarm log for fault finding
Alarm:
purposes.
Change of system setup
Settings:
(access code option).
Upper status line
The upper status line shows
• the position in the selected menu (left side).
• status (actual operation, alarm) (right side).
Lower status line
The lower status line shows
• system name (left side) and
• date and time (right side).
Graphical illustration
The graphical illustration may show an actual status,
a historical indication or other graphics, depending
on the position in the menu structure.
The illustration may show the entire system or parts
of it as well as various settings.
When a graphical illustration is shown, a list will
appear (see "List"). The list describes the elements
of the illustration. It is possible to browse the illustra-
tion elements.
List
The list includes one or more lines with information
grouped to the left and to the right.
The left side shows texts and the right side shows
values.
Headlines and empty lines cannot be selected.
10
Scroll bar
If the list of illustration elements exceeds the display,
the symbols "arrow up" and "arrow down" will appear
in the scroll bar to the right. The up and down but-
tons can be used to move up and down in the list.
Menu line
Note: Focus is marked with a frame.
Upper
4.1 Buttons and indicator lights
status line
Graphical
illustration
List
Scroll bar
Lower
status line
The operator display incorporates nine buttons.
Active buttons are illuminated from behind.
? (help)
When the help button is pressed, a help text applying
to the actual display will appear. All elements of the
display have a help text which can be called up with
the help button.
The help text is closed by pressing the esc button.
Arrow towards right (menu)
The "arrow towards right" button changes to the next
column in the menu structure. From the last column
is changed to the first column from the left.
Up
The up and down buttons are used to move up and
down in lists.
If a text is marked and the up button is pressed, the
text above will be marked instead. If the down button
is pressed, the text below will be marked.
If the down button is pressed in the last line in the
list, the first line in the list is activated.
If the up button is pressed in the first line in the list,
the last line in the list is activated.
Plus
The plus and minus buttons are used to increase and
reduce values of a selected parameter.
The plus button increases the value and the minus
button reduces the value.
Esc
The esc button is used to go one display back in the
menu.
If a value has been changed and the esc button is
pressed, the new value will not be activated
(see "Ok").
Fig. 2
OD 401 operator display
and down
and minus
Menu
Help
Up
Down
Plus
Minus
esc
ok
home
system run
alarm
Contrast
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