9.6 Back calculation
145
IM series User Instructions
Pre-pack Operations
9.6
Back calculation
Back calculation is a pre-pack function that applies to non weighed products, where the
unit price for the product is calculated from the computed total price and the computed
net weight.
European
Both the item price and the computed unit price must be printed on the label.
The computed unit price is printed in the second price field.
1.00
£/100g
Tomatoes
£
USE BY
£/01
0.25
1. 00
AZ Supermarket
20-12-02
Items
1
NET WEIGHT
400g
0 2 0 0 0 9 9 0 0 1 0 0 5 >
computed unit price
computed total price
computed net weight
=
where computed net weight =
programmed net weight in the PLU
x the number of items
net weight from PLU record
computed unit price
Note: You must use a label format that has all the appropriate fields defined.
Figure 9.1
European back calculation