Allen-Bradley 2-D Manual de usuario descargar pdf (Pagina 118)

G–4 Glossary

Publication 2755-6.4

Code

Set of unambiguous rules specifying the way in which data may be

represented.

Codeword

In PDF417, a single group of bars and spaces (4 bars and 4 spaces,

for a total of 17 module widths) which represents one or more

numbers, letters, or other symbols.

Codeword PD (Codeword Percent Decode)

Within a PDF417 symbol, the percentage of codewords which

decoded successfully; the number of good codewords divided by the

total number of codewords (data codewords plus error correction

codewords).

Code Length

Number of data characters in a bar code between the start and stop

characters, not including those characters.

Code 128

A high density symbology which allows the controller to encode all

128 ASCII characters without adding extra symbol elements.

Code 3 of 9 (Code 39)

A versatile and widely used alphanumeric bar

code symbology with a set of 43 character types, including all

uppercase letters, numerals from 0 to 9, and 7 special characters (- . /

+ % $ and space). The code name is derived from the fact that 3 of 9

elements representing a character are wide, while the remaining 6 are

narrow.

Continuous Code

A bar code or symbol in which all spaces within the symbol are parts

of characters. There are no intercharacter gaps in a continuous code.

The absence of gaps allows for greater information density.

Country Flag

In EAN-8 and EAN-13 codes, two or three digits which appear

immediately following the left guard bar pattern.

1 2 ... 113 114 115 116 117 118 119 120 121 122 123 ... 133 134

Sin comentarios

Allen-Bradley 2-D Manual de usuario Pagina 118