2
420 Plus Installation Manual
1.2
Front Panel Keypad
Figure 1-1 shows the
420 Plus
LED annunciators,
keypad, and normal mode key functions.
The symbols shown above the keys (representing up,
down, enter, left, right) describe the key functions
assigned in setup mode. In setup mode, the keys are
used to navigate through menus, select digits within
numeric values, and increment/decrement values. See
Section 3.1.3 on page 15 for information about using
the front panel keys in setup mode.
Figure 1-1.
420 Plus
Front Panel, Showing LED Annunciators and Normal Mode Key Functions
1.3
LED Annunciators
The
420 Plus
display uses a set of eight LED
annunciators to provide additional information about
the value being displayed:
•
Gross
and
Net
annunciators are lit to show
whether the displayed weight is a gross or net
weight.
•
Center of zero (
): Gross weight is within
0.25 graduations of zero. This annunciator
lights when the scale is zeroed.
•
Standstill (
): Scale is at standstill or
within the specified motion band. Some
operations, including tare functions and
printing, can only be done when the standstill
symbol is shown.
•
lb
and
kg
annunciators indicate the units
a s s o c i a t e d w i t h t h e d i s p l a y e d v a l u e :
lb=pounds, kg=kilograms.
•
The displayed units can also be set to short
tons (tn), metric tons (t), ounces (oz), grams
( g ) , o r N O N E ( n o u n i t s i n f o r m a t i o n
displayed). The
lb
and
kg
LEDs function as
primary and secondary units annunciators for
some combinations of primary and secondary
units. If neither primary nor secondary units
are lb or kg the
lb
annunciator is lit for
primary units,
kg
for secondary units.
•
The
Count
annunciator is lit to show that the
indicator is in piece count mode.
•
The Tare Acquired (
) lights to show that
a tare value was entered.
lb
kg
Count
Gross
Net
DISPLAY
TARE
SETPOINT
TIME/DATE
POWER
I/O
2
3
4
5
7
8
9
0
6
CLR
ZERO GROSS
NET
TARE
ENTER
MODE SAMPLE
UNITS PRINT
