GSE Scale Systems - 69
Chapter 6 Counting Mode Technical Reference Manual
Chapter 6
Counting Mode
6.1 Parts Counting Mode
This section discusses counting operations of the 574
Counting System. Counting Operations allow for the
ability of the Model 574 System to "count" the quantity
of parts on the weigh platform. In order for the system
to accomplish this, a sampling operation has to be
performed to establish the actual weight of one of the
pieces to be counted.
COUNTING MODE (Sample Key Operation)
If the <SAMPLE> key is pressed alone (not preceded
by a numeric entry, the Model 574 will perform an auto-
tare, establishing a net zero as a starting point. The
current net weight will then be actively displayed and the
prompt "Add XX" will be shown, where "XX" is the
value set by parameter P182. If the specified number of
parts are then added, then the <SAMPLE> or
<ENTER> keys may be pressed to accept the sample.
If a different number of parts are added, then the actual
number of parts added should be keyed in followed by
pressing the <ENTER> or <SAMPLE> key. The
subsequent results depend on the selections made for the
auto-enhance and minimum accuracy selections. Refer
to those sections for further information.
If a numeric entry precedes the <SAMPLE> key then
the 574 does not
perform an auto-tare. The entry is
assumed to be the number of parts already present on the
scale platform. If when the entry is made the current
mode is GROSS, GrTot, GrT+C, or GrT-C then the
stored tare weight is assumed to be from a previous
weighment and is cleared out. Otherwise, any previous
tare is assumed to be for a container that is in use and
the tare is retained and the current net weight is used to
calculate the piece weight based on the entered sample
size. This allows for the situation where the tare weight
of the container (if any) is consistent and has already
been established. Then the parts may be added and the
number of parts may be keyed in.
Note however, that the first method is the recommended
approach and will eliminate the possibility of
inappropriate tare weights from affecting the piece
weight calculation.
SAMPLING TO DETERMINE A PIECE WEIGHT
Although the sampling process may be performed in a
number of ways, the recommended method is to place an
empty box or empty container on the scale platform, and
then press <SAMPLE>. The 574 will then perform an
auto-tare resulting in a zero net weight. The display will
then prompt you to Add xx where the "xx" is the sample
quantity of parts (sample size) set by parameter P182.
(Manufacturer default setting is 10 pieces) The
requested number of parts should then be added to the
574 scale platform. Press the <ENTER> key. If the
sample's total weight was sufficient, the piece weight
will be calculated and the sample quantity will be
displayed. Otherwise, you may be prompted to add
additional parts. Additional parts are requested if
minimum accuracies are not met. The exact prompts
will depend on whether the auto-enhance and/or
minimum accuracy assurance features have been enabled
(Parameter 181 and Parameter 183 respectively). The
minimum amount of weight required for the sample
routine to meet the selected accuracy requirements for
the specified scale capacity is considered.
If the weight of the sample is un-detectable or barely
detectable then the message Code 32 ADD MORE! is
displayed briefly. This will most often occur when the
<ENTER> key is pressed without adding any parts. If
the parts were in fact placed on the scale, either the parts
are too light to count on that capacity platform or a much
larger quantity of parts must be hand counted in order to
perform the sample.
NEGATIVE SAMPLING TO DETERMINE A
PIECE WEIGHT
In order to perform a negative sample routine, place a
full or partially full container of parts on the scale and
SECTION - 6.1
Figure 11, Sample Key
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