Honeywell 7800 Series Product Data page 8

7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module
Fig. 5. S7800 Keyboard Display Module
Keyboard Functions
The keyboard contains six push-buttons
that are used to navigate on each page and
between pages on the display module (see
Fig. 6). These buttons generally have the
following functions:
• Up arrow - move up on a page or
increment a value for an input control
• Down arrow - move down on a page or
decrement a value for an input control
• Left arrow - move to the left on a page
(tab left) or go to a previous page
• Right arrow - move to the right on a page
(tab right) or go to the next page when
applicable
• OK - approve/accept the highlighted item
or go to the next page when applicable
• Home - go to the Home (Main Status)
page
When the burner control module is in a
Lockout condition the "Home" button
navigates to the Lockout page instead of
the Home page to display the lockout.
These buttons are acted on when they
are pressed and released. In some cases
a button can be pressed and held, i.e., not
released, for repeated execution of the
button (arrow buttons). Buttons are active
on some pages only when the action for the
button makes sense for the position of the
input focus on the page. If the input focus
4 LINES
Fig. 7. Home page
32-00110-07
doesn't make sense for the button action,
selecting the button is ignored.
Fig. 6. Keyboard buttons.
Page Structure
The Home and Lockout pages display text
using a larger font size than all other pages
so that information on them can be more
easily viewed from distances farther away
from the display module (see Fig. 7 and Fig.
8).
Up to 4-5 lines of text are displayed
(dependent on font size) at a time on the
page. When the page has more than 4 lines
of text to display a scroll bar is present on
the right-hand side of the page to indicate
this situation. The "Up arrow" and "Down
arrow" buttons are used to scroll up and
down the lines of the page. Each line is
highlighted with a white background to
indicate that it currently has input focus for
any button actions. The scroll bar adjusts to
give a relative position of the current view
with respect to all lines that the page can
display.
When a line has a right arrow symbol
positioned on the righthand side it
indicates that this line can navigate to
another page, "Next page", related to the
subject of the line when that line has input
focus. A "Right arrow" or "OK" button can
be pressed when the focus is on this line to
navigate to the next page.
SCROLL
BAR
8
RIGHT ARROW SYMBOL INDICATES
"NEXT" PAGE IS AN OPTION
KEYBOARD
BUTTONS
LINE WITH
INPUT
FOCUS