Operation
Chapter 4
4-14
SCALE NUMBER AND RANGE INDICATION
The current range is determined by the gross weight. Upon power-up, range 1 is in effect, the division size
specified at P127. When the gross weight exceeds the limit of range 1 specified at P126, range 2 goes into
effect using the increment specified at P129. When the gross weight exceeds range 2 specified at P128,
range 3 goes into effect. The limit of range 3 is the full scale capacity set at P110 using the division size
specified at P111.
For Example:
Range Symbol Capacity and Divisions Parameter Weight Range
1 Low
ˆ
10 X 0.002 P126 & P127 0 – 10.000
2 Med
‰
50 X 0.01 P128 & P129 10.001 – 50.00
3 High
Š
100 x 0.02 P110 & P111 50.02 - 100
In order for the range in effect to change back to the lowest range, any of the following three events must
occur.
• The gross weight must fall below plus ¼ grads on range 1
i.e. P127 = 20 Lbs. The scale must fall below 5 Lbs.
• The scale must be re-zeroed with the [ZERO] key (or %z macro command)
If the net weight is less than -5 grads and the gross weight is within the zero range (per P118), then the
gross weight is zeroed and the tare is cleared and the range is reset to range 1.
The current range applies to the displaying and printing of the gross, net, and tare weights. Also, whenever
rounded gross (20P) or rounded net (21P) are referenced, the rounding is done according to the range in
effect at the time of the reference. Of course, the rounding of 20P and 21P is done to the default units, not
the current units.
Scale number and range indication are not shown for net or gross if the net or gross is less than 1.25 grads
(same as before, except it now applies to 1.25 grads for lowest defined range.). When [ZERO] is pressed, if
the Model 672/675 is within the zero range, then it re-establishes a new zero, clears the tare, and sets the
range to the low range.
ACCUMULATIONS
When accumulations are performed, the rounded values (20P & 21P) are added to the previous total. Since
a total may be the result of several additions of data from different ranges (thus having different increments),
it is necessary that the increment used for rounding displayed and transmitted totals to be the number of
decimal places of the increment of the current units in the lowest range. This should cause the total to be
displayed as the exact value of the sum of the individual values accumulated, at least in the default units.
i.e.
range 1 x .02 example value: 1.38
range 2 x .05 example value: 5.35
range 3 x .1 example value: 10.2
--------------
total: 16.93
Note: The least significant digit of the total, 0.03, is not divisible by any of the specified increments for the
three ranges.
WARNINGS
A warning message will appear when (P126) “LowRangeMax >” (P110) capacity OR (P128)
“MidRangeMax <” (P126) “LowRangeMax” then error message "Code 38" "RangeError" is displayed briefly
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