7828 Density Transmitter Technical Manual Introduction
78285000_AB 4-7
4.4.4 BOARD CONFIGURATION
The 7828 configuration controls the way in which the transmitter will process and present
data, user settings, calibration constants and other factors. This data is stored in non-
volatile memory known as registers; a full list of the registers used in 7828 is given in
Appendix D.
To configure the 7828 it is necessary to write data into the configuration registers using
the RS485/Modbus link. ADView provides a convenient and graphical way of doing this
without you needing to know about register addresses and data formats.
Certain parameters are not available for configuration by ADView, including the Density
Offset value which may be required to fine tune the calibration of the transmitter (see
Section 5). However, ADView does have tools for reading and writing to individual
Modbus registers (using the Tools -> Register Read/Write facility), and for direct
communication on the Modbus (using Tools -> Direct Comms). More details and
examples are given in Appendix D, but for the significant majority of applications these
tools will not be required.
The factory-installed default configuration is listed in Appendix A (Specification).
WARNING: There is no facility within ADView or the 7828 to ‘reset’ the transmitter to a
default configuration.
Therefore, before attempting any alterations to the configuration, you are strongly advised
to use the Register Dump/Load facility in ADView to store the existing configuration (see
section 4.4.5). Then, if any mishap occurs, you will be able to restore the configuration
from the saved file.
ADView’s Board Configuration window is shown below:
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