Selecta: User Manual_______________
26
2.21
Managing Multiple Weight Ranges
2.21.1 Weight Bounding: Introduction
The Weight Bounding mode (weight classes) weighs the incoming products on the
line in a different way than the range of weight they belong to.
Up to 9 ranges are available and each range is characterized by a minimum and
maximum weight limit included in the scale capacity. A range is deemed enabled
when its minimum and maximum values are
different
from zero.
Every valid weight range (ID W.B.) is bound to a PLU where the product mode of
weighing and labelling is described.
A Weight Bounding archive is defined where the definitions of range of weight and
their bonds with the PLU are stored. Every set made of nine weight ranges is
bound to an ID that can be bound to one or more PLUs.
Weight bounding option is about setting a weight range in the PLU within which
the piece normally in process is accepted; if the detected weight is outside the
preset weight interval, the software checks if it is among the intervals in the
archive bound to the Weight Bounding ID in the RANGE of the. If this condition is
true, the PLU of the weight range including the weighed piece is processed.
If the weight of such piece does not belong to the intervals included in the weight
bounding ID bound to the active PLU, it is rejected.
Totalization is carried out in the PLU selected from the table of weight ranges. This
means that if the same PLU is used in several ranges, it is not possible to
differentiate the total of every single range. So it is necessary to print and possibly
set at zero the totals of the PLU before using a new selection of weight ranges.
To start a Weight Bounding, select a PLU called “Master” bound to an element in
the Weight Bounding archive.
2.21.2 3 Way Selector
The
selector
is generally made o fan ejecting group with PLC which receives from
the machine two digital signals:
a trigger signalling that a piece has reached the ejection target
a couple of digital outputs encoding the number of one of the 4 possible ways of
the
selector
(3 outputs and the idle way).
For each PLU it is possible to set which way of the
selector
the
accepted
pieces
shall go, that on the basis of the weight bounding operation are totalized in that
particular PLU.
Therefore, this configuration is an evolution of the previous one, as besides the
trigger signal (needed by the
selector
), the other two outputs BIT1 and BIT2 are
activated to encode the number of the
selector
relevant bay, so:
the
SELECTOR
parameter in configuration is set at CB THREE WAYS MODE(just
like the previous case)
