| GS1-DataBar
barcodes (formerly RSS) |
| BACKGROUND INFORMATION |
| The GS1
DataBar symbology - formaly known as EAN.UCC Reduced Space
Symbology (RSS) - is a family containing three linear
symbologies and three stacked variants, known as
GS1-DataBar barcodes. GS1-DataBar-14 encodes the full 14
digit GS1/EAN/UCC item identification in a linear symbol
that can be scanned in any direction. GS1-DataBar Limited
encodes item identification suitable for use on small
items, but not for use at point-of-sale. |
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Since Codabar is self-checking, there is no established checksum digit. Should a specific application wish to implement a checksum digit for additional security, it is up to the implementer to define and handle same. However, keep in mind that other applications that read your barcode will interpret your checksum digit as part of the message itself. |
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| GS1-DataBar
-14 Stacked is a variant which is stacked in two rows,
either as a truncated version (above) used for small item
marking, or as an omni-directional version (below)
designed to be read by omnidirectional scanners. |
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The GS1-DataBar
-14 based versions encode the full 14 digit GS1/EAN/UCC
item identification number and this may be prefixed with
the (01) AI – although this is NOT encoded.
The DataBar
implementation uses the following Start Mode property
values to specify the symbol:
|
| Start
Mode |
DataBar
version |
| 0 |
DataBar-14 |
| 1 |
DataBar-14
Truncated |
| 2 |
DataBar
Limited |
| 3 |
DataBar-14
Stacked |
| 4 |
DataBar-14
Stacked Omnidirectional |
| 5 |
DataBar
Expanded |
| 6 |
DataBar
Expanded Stacked |
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All DataBar
symbols are based on Xunit size, where the Yunit (height)
is treated as a multiplier of the Xunit value.BR>The following height
values should be used:
DataBar-14: a minimum
height of 33 X
DataBarTruncated: a
minimum height of 13 X
DataBar-14 Stacked: a
fixed height (top row 5X, bottom row 7X, separator 1X)
DataBar-14 Stacked
Omnidirectional: minimum height 33X (each row)
DataBar Limited: minimum
height 10 X.
DataBar Expanded: minimum
height 34 X
DataBar Expanded may also
be used in a stacked version, and the extent of stacking
may be specified using the PairsPerRow property, which can
range be set between 1 and 10, where 1 represents the
minimum allowed width of the symbol. Again each row shall
have a minimum height of 34 X.
DataBar Expanded may be
used to encode AIs in addition to the item identification
number as listed below:
(01)………(xx)………
(01)………(3103)…… - 6 digit metric weight
(01)………(3202)…… - 6 digit pound weight
(01)………(392x)…… - 3 digit price
(01)………(393x)…… - 3 digit ISO currency code
followed by price
(01)..……..(310x)…….(yy)…….. – metric weight
and six digit date
(01)…..…..(320x)…….(yy)…….. – English weight
and six digit date
(where yy may be 11
(production date), 13 (packaging date), 15 (best before
date) or 17 (expiration date).
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