Using a scanner
prefix and suffix already gave the possibility to recognize whether
the text input was scanned or manually typed. The 'code identifier' offers extra
functionality to recognize the type of barcode that was scanned.
In warehouses where multiple types of barcodes are used, including GS1-128
(EAN128), the combination of prefix/suffix and code identifier should be used,
to avoid unwanted 'GS1-128' decoding by E-WMS of non-GS1-128 barcodes.
This document contains following sections:
Scanning of GS1-128 barcodes requires that E-WMS decodes the scanned data,
because a scanned GS1-128 barcode will in most cases contain several parts of
data in one scan. Each part of information in a GS1-128 barcode is preceded by an
identifier' (AI). The AI for 'item code' is for example '02', so scanning
the part '0208717496971075' within a GS1-128 barcode
would result in E-WMS searching for item '08717496971075'.
However, when not scanning a GS1-128 barcode, but a simple (CODE39) barcode
which also happens to start with a GS1-128 application identifier like '02', then
GS1-128 decoding should NOT be started. Without code identifier, it can occur
that scanning (CODE39) item code '0267879' would
result in error message 'item code 67879 not found'. When using a code
identifier, scanning this CODE39 label would add a prefix
('B' or ']A4') to the barcode, while scanning a GS1-128 barcode would add prefix
'K' or ']C1' , so E-WMS knows when to start GS1-128 decoding, and when not.
These extra characters are not visible in E-WMS, because these will be
removed immediately. You can scan a barcode in 'Wordpad' on a scanner, to view
the 'raw' scanned barcode, including prefix, suffix and code identifier.
Symbol code identifier
The codes marked below
with "*" are supported by E-WMS, when Code Identifier 'Symbol' is enabled:
AIM code identifier
From release 408, E-WMS supports the AIM code identifier. The AIM system adds
multiple characters to a barcode scan. All these barcode types are recognized by
E-WMS when using AIM, but only the marked entries (*) are handled specifically.
For the other barcode types, the content of the barcode is just passed 'as is' to
the E-WMS scan field.
The 'x' mentioned below in the prefix is the 'modifier character' which is
not interpreted by E-WMS, so can be any character.