GSE Scale Systems - 261
Chapter 28 Information Parameters Technical Reference Manual
sealing the unit is available. A small switch marked
ACCESS, YES/NO, is located on the rear panel. With a
small screwdriver, you can position the switch on either,
NO or YES. With the switch in the YES position, the
unit allows access to the parameter setups by means of
entering a software access code via the keypad. The
switch must be in the YES position at least momentarily
while the unit is displaying the access code prompt
"Setup Keyin" CODE in order to make changes. If this
requirement is not met, then when the access code is
entered, the warning message Code 16 Check Swtch is
displayed and changes will not be allowed. Once an
instrument has been finalized, this switch is moved to the
NO position to prevent further Setup Mode changes. In
order to seal the instrument, special tape or a wax seal
can be placed over the switch.
P60200. B SN
This parameter displays the serial number of the main
PC board in the 574. This is a non-enterable information
parameter provided for identification and control
purposes for GSE and NIST officials or their agents.
P60201. AudTr
This parameter displays the Audit Trail Number which
starts at 00000 when the board is new. This number is
incremented by 1 when changes are saved after one or
more of the NIST controlled parameters (P110 - P119,
P150 - P158, P160, P162, P163, P169, P212, P222,
P1XXX and P2XXX) are changed or after a calibration
is performed. If the indicator is not set up according to
NIST standards, the Audit Trail Number will alternate
with a display of NOT H-44!
The "NOT H-44" command also checks for the
resolution of the indicator. If the resolution is greater
than 10,000d then the warning will appear when viewing
the audit trail, P60201. Also the zero track for scales 2
thru 4, in the case of multi-scales, are also checked as
scale 1 has been.
However, the absence of this message does not guarantee
that the indicator is setup to within NIST standards. This
warning indication is simply intended to be a tool for the
Weights and Measures inspector to help insure that
certain selections have not been made.
P60202. ISNX
This parameter shows the serial number of the
instrument. This is to provide additional identification
and warranty tracking.
28.5 Diagnostic Information Parameters
P61100. Crrnt
This parameter shows an approximation of the present
mV/V output of the load cell connected to the unit,
ranging from 0 to +/-10.0. The accuracy of this value is
approximately +/-0.02%.
P61101. CAL Factr
This parameter shows the calibration adjustment factor.
This value is normally 1.000 however, if the full scale
has changed since calibration this number will be
slightly greater than 1.000. The internal resolution will
also be decreased. If there is a high gain due to low load
cell output, less than 0.625 mv/V at full scale, this will
cause this value to be greater than 1.000 and also
decrease the internal resolution.
P61102.ReZro Wght
This parameter shows the amount of weight (in default
units) that has been zeroed out though use of the
<ZERO> key since the last calibration. This value can
be cleared by pressing the <CLR> key. New values can
also be entered.
P61103.ZrTrk Wght
This parameter shows the amount of weight (in default
units) that has been tracked off by the zero track feature
since the last use of the <ZERO> key.
P61104 thru P61107 show the values established by the
unit during the last calibration. These values are
established are compensating for variations in the A/D
itself specific to the board A/D installed. If these values
are to be entered into another 574, record these values
and then proceed to key them into the new 574. The
setup file can be modified with a %e replacing the %c
effectively entering the new number instead of clearing
the entered number.
P61104.CZero
This parameter allows for adjustment of the coarse zero
in 25% increments. The ranges are between 175% to -
175%. Each 25% is approximately 2,000,000 parts.
These values are not normally entered but can be entered
when transfered from another 574 (see above). There are
16 selections available, 0 - 15. ASCII file can be
modified with one of the following entries if transfering
selections from one 574 to another.
SECTION - 28.5
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