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Programming Guide 39
Symbology-Specific Label I.D.
Setting Symbology-Specific Label Identifiers (Label I.D.)
Symbology-specific label identifiers comprise one or two ASCII characters
that can precede or follow barcode label data as it is transmitted to the
host. The host uses these characters as a means of distinguishing be-
tween symbologies.
Industry standards have been established for symbology-specific label
identifiers, and are listed in the table below. Most scanners will have
factory default identifiers preset to these standards.
Table 1. Industry Standard Label Identifiers (all are prefixes)
UPC-A ------------------------------ 'A' EAN-8 (5 Add-on) ------------ 'FF'
UPC-E ------------------------------ 'E' EAN-8 (8 Add-on) ------------- 'FF'
EAN-8 ---------------------------- 'FF' EAN-13 (2 add-on) ------------- 'F'
EAN-13 ----------------------------- 'F' EAN-13 (5 Add-on)------------- 'F'
UPC-A (2 add-on) -------------- 'A' EAN-13 (8 Add-on)-------------- 'F'
UPC-A (5 Add-on) -------------- 'A' Code 39 ----------------------------- '*'
UPC-A (8 Add-on) --------------- 'A' Codabar--------------------------- '%'
UPC-E (2 add-on) -------------- 'E' Interleaved.2 of 5 ---------------- 'i'
UPC-E (5 Add-on) -------------- 'E' Code 93 ---------------------------- '&'
UPC-E (8 Add-on) --------------- 'E' Code 128 -------------------------- '#'
EAN-8 (2 add-on) ------------- 'FF' MSI/Plessey --------------------- '@'
To set symbology-specific label identifiers:
1. Look at the ASCII chart shown on the previous page and
identify the ASCII character(s) and the corresponding Hex
Code(s) for the ASCII characters you will use as identifiers.
You will also need to determine whether the character(s) will
need to be sent as a prefix or a suffix.
For example: You need to change the label identifier prefix for
UPC-A to 'A1'.
2. Scan the SET label below.
3. Scan either the TRANSMIT LABEL I.D. AS PREFIX or TRANS-
MIT LABEL I.D. AS SUFFIX, depending on your requirements.
For our example, the 'transmit as prefix' label would be scanned.