Reference Manual Rev 1.13
Page 6 004R-646-113
1. Introduction
1.1. Overview
This precision digital indicator uses the latest Sigma-Delta A/D technology to ensure
fast and accurate weight readings. The setup and calibration of the instrument are
digital, with a non-volatile security store for all setup parameters.
It may be operated from either a DC power source (12V
DC
to 24V
DC
) or AC power
(optional 110 – 240 VAC). There is a soft power on/off function that retains memory
of its state. Once an instrument is turned on it will automatically start up again if the
external power is interrupted.
Optical communications is fitted standard and allows for a temporary isolated
communications link to be established with a PC. Software upgrades, the use of
computerised setup and calibration can then be done using a PC. Refer to Optical
Communications page 14 for more information.
Figure 1: Weight Indicator
The instrument provides zero, tare, gross/net, truck and print on the fixed function
keys and supports special functions (eg. printing, unit switching, etc.), via user
definable function key and external inputs. Operator functions (clock, report etc)
and editing functions are provided on the alpha/numeric key pad. It is equipped with
an NVRAM store to ensure day-to-day operating settings (eg. ZERO, TARE,
CLOCK, etc.) are retained when power is removed.
The RS-232 communications port can be used for printer driving, connection to a
remote display or PC. The transmit only RS-485 communications port can be used
for remote displays. There is a built-in clock for date-stamping printed outputs.
The instrument can support different software applications depending on the
functionality required.
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