Specifications

b Com mand - 2D Bar Code - PDF417 Spe cific Op tions
The fol low ing pa ram e ters may be omit ted and de -
fault val ues will au to mat i cally be in serted. Each pa -
ram e ter value (data string) must be pro ceeded by its
as so ci ated com mand pre fix char ac ter.
p
6
(s) = sets er ror cor rec tion level
Er ror Cor rec tion codewords per sym bol
Values: s1 - s8
If level is not spec i fied, a level will au to mat i -
cally be as signed as per the fol low ing ta ble:
EC level EC Codewords Auto Se lect Level
0 2 —
1 4 0-31
2 8 32-63
3 16 64-127
4 32 128-255
5 64 256-511
6 128 512-928
7 256 —
8 512 —
p
7
(c) = se lects data com pac tion (com pres -
sion) method
Val ues: 0 or 1, de fault is 0
c0 = Auto-en cod ing
The printer will switch be tween the three
com pac tion modes as needed to cre ate
the small est pos si ble sym bol for the
given data.
c1 = Bi nary mode
The printer will en code the sym bol in
byte com pac tion mode.
PDF417 uses an in ter me di ate data type called a
“code word” to store the char ac ters in the sym -
bol. Each code word typ i cally con sumes a
fixed-size por tion of the to tal sym bol. More
char ac ters in serted into a code word results in
fewer codewords needed to cre ate a sym bol.
This re sults in a smaller sym bol. To pro vide ef fi -
cient data com pac tion, PDF-417 sup ports three
types of codewords: text, nu meric and bi nary.
3-30 980352-001 Rev.D