Constant

Setting

Description

Code_39

0

Default Setting. Most commonly used non-retail symbology.  Note that the leading and trailing asterisks (*) are added automatically, if not supplied. Characters allowed: 0-9; A-Z; -.$*/+%, and space.

Code_39_Extended

1

Allows all ASCII 128 characters to be encoded by using a double-character format. Most scanners will need to be switched to the extended mode in order to recognize this.      

Code_128_A

2

Allows all ASCII values between 0 and 95. This includes special characters, such as tab or escape.

Code_128_B

3

Allows all ASCII values between 32 and 127.

(Unlike Code 128 A, it allows the use of lower-case letters)

Code_128_C

4

Hight density, numeric only symbology.  Must have an even number of digits.

Code_128_Auto

5

Automatically selects the best Code 128 subset.

EAN_128

6

Based on Code 128, most commonly used in logistics applications.

Interleaved_2of5

7

Hight density, numeric only symbology.  Must have an even number of digits.

Standard_2of5

8

Numeric-only, low density. Commonly used in libraries, blood banks, and parcels.

Code_93

9

Superset of Code 39.  If required, it switches to Code 93 Extended automatically.

Code_11

10

Uses numbers 0-9 and the dash symbol "-"

Codabar

11

Numeric-only symbology. Each bar code, however, must start and end with the letters A,B,C or D.

MSI_Plessey

12

UPC_A

13

Used in retail environments in North America

UPC_E

14

Shorter version of UPC-A.  Not all UPC-A numbers can be converted to UPC-E

EAN_13

15

Used in retail environments outside of North America.

EAN_8

16

Similar to EAN 13, but EAN 8 numbers are not derived from EAN 13 (as is the case with UPC).

PostNet

17

Used by the United States Postal Service

RoyalMail

18

Used by the UK Royal Mail

PDF417

19

Hight density 2D Symbology, capable of encoding up to 2710 characters in a single barcode.  PDF417 is one of the few symbologies capable of encoding all ASCII 256 characters.