GSE Scale Systems - 263
Chapter 28 Information Parameters Technical Reference Manual
P61120.AIN8 NROff
Compensates zero offsets in A/D for all four gain factors
during the calibration procedure.
P61121.VREF NROff
This value compensates for zero offsets of the A/D’s
reference voltage which is derived by the sense leads.
NOTE:
When making a firmware update in the field, it may be
desireable to write the values for the following
parameters to avoid a re-calibration: P61100 thru
P61121. If the values are written down before removing
the old EPROM, they may be keyed-in after the new
EPROM is installed and will maintain calibration
accuracy unless other changes have been made to the
hardware or setup. However the optimum method of
restoring a previous setup is to make use of P64000.
This parameter will allow the download of the complete
setup to a PC or a printer.
P61200 thru P61221 (scale 2)
P61300 thru P61331 (scale 3)
28.6 Linearization Data Parameter Setup
If Multi-Point Linearization is enabled (P119), the
following ten parameters (P61130-P61139) show the
calibration weights used and the resulting calculated
factors. Otherwise the message "Not Used" is shown.
P61130.Cal WGHT1
This parameter shows the weight used for the first cal
point (if Multi-Point Linearization is enabled). A value
of 0.000 indicates that a linearization has not yet been
performed.
P61131.Cal FACT1
Calibration factor for the first point of the multi-Point
Linearization feature.
P61132. through P61139.
These parameters show the calibration weights and their
respective factors for the remaining 4 points of the
Multi-Point Linearization feature. These values will be
transmitted from the indicator when a parameter
download is performed (refer to the section on Parameter
Download and Upload. However, the actual values will
contain a %c command (instead of the %e command that
is normally sent with such information) to prevent the
linearization values from being loaded into another scale.
P61231 thru P61239 (scale 2)
P61331 thru P61339 (scale 3)
28.7 Test Mode
P62000.Dsply Test
This parameter performs a test of the display when you
press <ENTER>. This will illuminate all display
elements so that you may examine them to insure that
they are all functional. Press <ENTER> or any other
key to end the test.
28.8 Parameter Download And Upload
Since use of the terms download and upload can create
confusion when explaining the sending and receiving of
data, we will refer to transmission of the indicator setup
data to some external device as download and the
receiving of setup information from an external device as
upload.
The instrument generates an ASCII transmission (see
parameter P64000) which contains all the commands
necessary to duplicate the setup data along with
comments describing each setup parameter selection.
The transmission may be sent to a printer to get a hard
copy of the setup to more easily review the setup
selections. It could be sent to another 574 unit in order
to copy the setup from the first one to the second. The
data may also be sent to a computer for permanent
storage. This would simplify restoration of the setup
when servicing is required or an additional unit with the
same setup is needed. The transmitted data contains the
selection for every parameter within the unit, including
the information parameters (P60000-P65XXX).
However these informational parameters are sent without
the commands that would enter these values into a
receiving indicator. Refer to the Appendix for an
example of the file generated by this parameter.If a
significant number of parameters in the unit are set up
for a specific application, it is strongly recommend that
parameter P64000 be selected and the final setup
SECTION - 28.7
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