Rockwell Automation 2755 Enhanced Decoder Series B User Manual

Page 346

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Glossary

G–5

Publication 2755-833

Interleaved 2-of-5

A bar code in which characters are paired together using bars to
represent the first character and spaces to represent the second.

Inter-Scan Timer

A timer that inhibits decoding for a set time interval after a valid
read.

L

LAN

Local area network.

LSAP

An acronym for Link Service Access Point. Used by the DH-485
protocol. Effectively a secondary address for an application service.

M

match

A condition in which decoded data matches data in the match code
table.

match code

A sequence that specifies a symbology (code type) and character
string which can be compared against decoded (valid) bar codes.

match code table

A list of match codes that is compared to each valid read. The
decoder offers primary and extended match code tables, each of
which offers different capabilities.

match complete

An output condition in which decoded data matches a set number of
entries in the match code table.

match entry

An output condition in which decoded data matches an entry in the
match code table.

misread

A condition which occurs when the data output of a reader does not
agree with the encoded data presented.

modulo check digit or character

A calculated character within a data field used for error detection.
The calculated character is determined by a modulus calculation on
the sum or the weighted sum of the data field contents.

msec

Abbreviation for millisecond (1/1,000 of one second).

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