Rice Lake 120 Digital Weight Indicator - Manual (Page 5)

Introduction 1
About This Manual
This manual is intended for use by service technicians
responsible for installing and servicing 120 digital
weight indicators. This manual applies to indicators
using Version 2.02 of the 120 software.
Configuration and calibration of the indicator can be
accomplished using the indicator front panel keys, the
EDP command set, or Version 3.0 or later of the
Revolution
® configuration utility. See Section 3.1 on
page 7 for information about configuration methods.
WARNING
Some procedures described in this
manual require work inside the indicator
enclosure. These procedures are to be
performed by qualified service personnel
only.
Authorized distributors and their employees
can view or download this manual from the
Rice Lake Weighing Systems distributor site
at
www.ricelake.com .
The Operator Card included with this manual
provides basic operating instructions for users of the
120. Please leave the Operator Card with the
indicator when installation and configuration are
complete.
1.0 Introduction
The 120 is a single-channel digital weight indicator housed in a durable plastic enclosure. The indicator front
panel consists of a large (.8 in, 20 mm), six-digit, seven-segment LED display and five-button keypad. Features
include:
• Drives up to four 350
or eight 700 load cells
• Supports 4- and 6-wire load cell connections
• Electronic data processing (EDP) port for full duplex, RS-232 communications at up to 38400 bps
• Printer port for output-only RS-232 and 20 mA current loop communications at up to 9600 bps
The 120 is NTEP-certified for Classes III and III L at 6,000 divisions. See Section 7.8 on page 36 for detailed
specifications.
1.1 Operating Modes
The 120 supports the following modes of operation:
Normal (weighing) mode
Normal mode is the “production” mode of the indicator. The indicator displays gross or net weights as
required, using the LED annunciators described in Section 1.3 on page 2 to indicate scale status and the type
of weight value displayed. Once configuration is complete and a legal seal is affixed to the back of the
indicator, this is the only mode in which the 120 can operate. See Section 1.4.1 on page 3 for more
information about normal mode operations.
Panel mode
Panel mode allows the time, date, consecutive number, and consecutive number start-up value to be set
without entering configuration mode. To enter panel mode, press and hold the
GROSS/NET key until the TIME
menu is shown. See Section 1.4.2 on page 4 for more information about panel mode.
Configuration mode
Most of the procedures described in this manual require the indicator to be in configuration mode, including
configuration and calibration.
To enter configuration mode, remove the large fillister head screw from the enclosure backplate. Insert a
screwdriver or a similar tool into the access hole and press the setup switch once. The indicator display
changes to show the word
CONFIG .
Test mode
Test mode provides a number of diagnostic functions for the 120 indicator. Like setup mode, test mode is
entered using the setup switch. See Section 7.7 on page 35 for more information about entering and using
test mode.