Appendix D: Annunciator Terminal Messages - Honeywell 7800 Series Product Data

7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module
• Supply voltage to the display
• Backlight power (percentage of power driving the backlight)
• Backlight feedback (current feedback from backlight)
• Heater status (percentage of power driving the LCD heater)
• Number of received Modbus packets
• Number of transmitted Modbus packets
Fig. 80. Display diagnostics
More diagnostic lines exist than can fit on the main body of the page so the up and down
arrow buttons are used to scroll among the lines. The left arrow button is used to exit this
page and return back to the Display setup menu.
An additional selection line exists on the page to allow for LCD diagnostics to be initiated
for checking the LCD hardware (see Fig. 81). The right arrow or OK button is used when
this LCD diagnostics line is selected navigates to the LCD diagnostics page. One of the
following tests can be conducted:
• All pixels ON (white display)
• All pixels OFF (black display)
• Fixed dots (every other pixel is on)
Fig. 81. LCD diagnostics test
The up and down arrow buttons are used to scroll through the different test selections. The
right and left arrow buttons are used to tab to the "Start test" options, "Yes" and "No". When
the input focus is on the "Start test" options the up and down arrow buttons scroll between
"Yes" and "No". Pressing the OK button when the "Yes" option is selected begins the LCD
test. The LCD test displays until the user presses any button to return back to the test
selection page. Pressing the OK button when the "No" option is selected exits this page and
returns back to the Display diagnostics page.

APPENDIX D: ANNUNCIATOR TERMINAL MESSAGES

Annunciator terminals can be named to the messages listed in the following table. See
"Annunciator Setup" on page 26 for the procedure that performs this name assignment.
This name assignment is intended to match the annunciator terminal with the installation
purpose of the terminal. The messages are categorized into the following groups:
• Standard terminal names (20 names)
• Common fixed names (17 names)
• Custom message names (20 names) - see "Annunciator Setup" on page 26
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