Citizen Systems BD2-2220 - Manual (Page 110)

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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 has a variable length of columns.
• Code set A ASCII characters 00H - 5FH can be represented.
• Code set B ASCII characters 20H - 7FH can be represented.
• Code set C Two-digit numbers 00 - 99 can each be represented by one character. In addition to
the above characters, special characters are available:
• Shift character (SHIFT)
When used in code set A, one character next to a Shift character is treated as a character of
code set B. When used in code set B, one character next to a Shift character is treated as a
character of code set A. The Shift character cannot be used in code set C.
• Code set select characters (CODE A, CODE B, CODE C):
The code set following a code set select character is switched to code set A, B, or C.
• Function characters (FNC1, FNC2, FNC3, FNC4):
How the function characters are used depends on each application. In code set C, only FNC1 is
available.
When sending print data, note these points:
(1) Each string of bar code data must begin with a code set select character (CODE A, CODE B, or
CODE C), which selects the first code set to use.
(2) Every special character is specified by a combination of two characters: a brace “{” followed
by one character. A brace “{” itself is sent twice consecutively.
Special characters
Hex. ASCII Code Set A Code Set B Code Set C
7B53 {S SHIFT SHIFT -N/A
7B41
{A -N/A CODE A CODE A
7B42 {B CODE B -N/A CODE B
7B43 {C CODE C CODE C -N/A
7B31 {1 FNC1 FNC1 FNC1
7B32 {2 FNC2 FNC2 -N/A
7B33 {3 FNC3 FNC3 -N/A
7B34 {4 FNC4 FNC4 -N/A
7B37B {{ ‘ { ‘ ‘ { ‘ ‘ { ‘
< Example>
To print “No.” in code set B, followed by “123456” in code set C, send the following data string:
GS k <73><10><7Bh 42h> “No.” <7Bh 43h><12><34><56>
• If the printer finds a string of bar code data that does not begin with a code set select character,
it immediately aborts the command processing and handles the subsequent data as normal
data.
• If the printer received a character that is not available in the currently selected code set, it
immediately aborts the command processing and handles the subsequent data as normal data.
• An HRI character corresponding to either a Shift character or a code select character is not
printed. An HRI character for either a function character or a control character is treated as a
space character.