Fig. 24-( ◊ ) Scroll Pushbutton Function - Honeywell 7800 Series Manual

KEYBOARD FUNCTIONS
The keyboard contains four pushbuttons and each has
separate functions (SCROLL-Down, SCROLL-Up, MODE
and Change-Level). The MODE and Change-Level func-
tions, when pressed together, provide a SAVE function.
1. SCROLL Down-Up pushbuttons (◊) (see Fig. 24).
The SCROLL Down-Up pushbuttons (◊) are used to
scroll through the selectable messages. The double-headed
arrow (◊), which is located in the lower left position of the
second line of the display, represents the SCROLL Down-
Up pushbuttons. The SCROLL Down-Up pushbuttons (◊)
can be pressed to display the selectable messages one at a
time or held down to scroll through the selectable messages
at a rate of two per second. When the last item of the
selectable messages is viewed, the display wraps around and
displays the first selectable message again.
◊
Fig. 24—( ) SCROLL pushbutton function.
2. Change-Level pushbutton (↔) (see Fig. 25).
The Change-Level pushbutton is used to change between
the first hierarchy of selectable messages to a subset of
selectable messages. The symbol (>) located on the second
line in the lower right corner of the VFD represents a first
level hierarchy of selectable message. The symbol (<) lo-
cated on the second line in the lower right corner of the VFD
represents a subset of selectable messages.
SAVE
3. MODE pushbutton (see Fig. 26).
play from a second-line-selectable message to the second-
line-preempted message as does the sixty second timeout
function. The MODE pushbutton will work only if there is a
second-line-preempted message or lockout message.
4. SAVE function (see Fig. 27).
able message they want to view upon power restoration.
The second line selectable message will be restored to the
most recently saved selection when power returns. The
SAVE function is performed by pressing and holding the
SAVE
MODE key and then pressing the Change-Level pushbutton
(↔). The second line of the display will briefly note
M1932A "...SAVING..." to confirm the key press.
29
Fig. 25 (↔)—Change-Level pushbutton
function.
The MODE pushbutton instantaneously switches the dis-
The SAVE function enables users to identify the select-
RM7838B
OPERATION
SAVE
SAVE
M1933A
65-0120—1