Rice Lake 420 Plus, Installation Manual

Page: 7 / 60

420 Plus Installation Manual - Introduction 3
Table 1-1 shows which annunciators are used for all combinations of configured primary and secondary units.
For example:
• If the primary unit is pounds (lb) and the secondary unit is kilograms (kg), the
lb
LED is lit for primary
units,
kg
for secondary units.
• If the primary unit is pounds (lb) and the secondary unit is short tons (tn), the
lb
LED is lit for primary
units,
kg
for secondary units. There is not an LED for short tons, so the
kg
LED is used as the secondary
units annunciator.
• If the primary unit is short tons (tn) and the secondary unit is pounds (lb), the
lb
LED is lit for primary
units (tn), and
kg
is lit for secondary units (lb). Because there is no LED for short tons, the
lb
and
kg
LEDs
are used as primary and secondary units annunciators.
See Section 3.2.2 on page 19 for more information about configuring primary and secondary display units.
1.4 Indicator Operations
Basic 420 Plus operations are summarized below.
1.4.1 Toggle Gross/Net Mode/Piece Count
Press the
GROSS/NET
key to switch the display mode
from gross to net, or from net to gross. If a tare value
has been entered or acquired, the net value is the gross
weight minus the tare.
Gross mode is shown by the
Gross
annunciator; net
mode is shown by the
Net
annunciator.
1.4.2 Toggle Units
Press the
UNITS
key to switch between primary and
secondary units. The appropriate units LED to the
right of the display is lit.
1.4.3 Zero Scale
1. In gross mode, remove all weight from the
scale and wait for the standstill annunciator
(
).
2. Press the
ZERO
key. The center of zero
( ) annunciator lights to indicate the
scale is zeroed.
1.4.4 Acquire Tare
1. Place container on scale and wait for the
standstill annunciator ( ).
2. Press the
TARE
key to acquire the tare weight
of the container. Net weight is displayed and
the ( ) annunciator lights to show the tare
value was entered
1.4.5 Enter Tare (Keyed Tare)
1. Use the numeric keypad to enter the tare
value, then press the
TARE
key.
2. Net weight is displayed and the ( )
annunciator lights to show the tare value was
entered.
1.4.6 Remove Stored Tare Value
1. Remove all weight from the scale and wait for
the standstill annunciator ( ).
2. Press the
TARE
key. The ( ) annunciator
goes off, indicating the tare value has been
removed.
Indicators with the REGULA parameter set
to NONE or NTEP (see Section 3.2.5 on
page 23) can clear a stored tare value using
the following procedure:
1. Press
DISPLAY TARE
to show the stored tare
value.
2. Press the
CLEAR
key twice to remove the
stored tare.
Primary Unit
Secondary Unit
lb kg oz g tn t none
lb lb / lb lb / kg lb / oz lb / g lb / kg
kg kg / lb kg / kg kg / oz kg / g lb / kg
oz oz / lb oz / kg oz / oz oz / g oz / kg
g g / lb g / kg g / oz g / g g / kg
tn lb / kg lb / kg lb / oz lb / g lb / lb lb / kg lb / kg
t lb / kg lb / lb lb / kg
none lb / kg lb / kg lb / lb
Table 1-1. Units Annunciators, Showing Primary / Secondary LEDs Used for All Configurations
Note