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CODE128 This bar code consists of 103 bar code characters and three code sets, enabling 128 ASCII code characters
to be printed. It hasavariable length ofcolumns.
•Code setA ASCII characters 00H- 5FH canberepresented.
•Code setB ASCII characters 20H- 7FHcanbe represented.
•CodesetCTwo-digitnumbers 00- 99caneachbe representedbyonecharacter.In additiontotheabove
characters,specialcharacters are available:
•Shift character (SHIFT)
When used in code setA, onecharacter next to aShiftcharacter istreated as acharacter of codesetB.
When used in code setB, onecharacter next to aShiftcharacter istreatedas acharacter of codeset A.
TheShift character cannot be used incode set C.
•Code setselectcharacters (CODE A,CODE B, CODE C):
Thecode set followinga code setselectcharacter isswitched tocode setA,B,or C.
•Function characters (FNC1, FNC2,FNC3,FNC4):
How thefunction characters are useddependsoneachapplication.Incodeset C, onlyFNC1is available.
When sending print data, note these points:
(1)Eachstringofbarcodedatamustbeginwitha codesetselect character(CODEA,CODEB, or CODEC),
which selects the first codeset to use.
(2) Every special character is specified by a combination of two characters: a brace “{” followed by one
character.A brace “{”itself issenttwice consecutively.
Special characters
Hex. ASCII Code Set A CodeSetB Code SetC
7B53H {S SHIFT SHIFT -N/A
7B41H {A -N/A CODE A CODE A
7B42H {B CODE B -N/A CODEB
7B43H {C CODE C CODE C -N/A
7B31H {1 FNC1 FNC1 FNC1
7B32H {2 FNC2 FNC2 -N/A
7B33H {3 FNC3 FNC3 -N/A
7B34H {4 FNC4 FNC4 -N/A
7B7BH {{ ‘ {‘ ‘{‘ ‘{‘
<Example>
Toprint “No.”in code setB,followedby“123456”in code setC, sendthe following data string:
GS k <73> <10> <7B>H <42>H “No.” <7B>H <43>H <12> <34> <56>
•Iftheprinterfinds astringofbarcode data that does not begin with acode set select character, it
immediately aborts thecommandprocessing andhandles thesubsequentdata asnormal data.
•Iftheprinterreceived acharacter that isnot available inthecurrentlyselected code set, it immediately
aborts the commandprocessingandhandlesthe subsequentdata asnormal data.
•AnHRIcharactercorresponding toeithera Shiftcharacteror acodeselect characteris not printed.AnHRI
character foreither afunction character or acontrol character is treated asa space character.
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