(3)CODE128 code selection
If the case of CODE128 (with auto code selection), code selection is performed in the following manner. (Conforming to
c Determining the start character
(a)If the data begins with four or more consecutive numerals, the start code to be used is (CODE C).
(b)In any case other than (a) in c, if a control character appears before a small letter (see f.) or four or more consecutive numerals, the start code is (CODE A).
(c)In none of the above cases, the start code is (CODE B).
dIf the data begins with an odd number of digits in (a), c:
(a)Insert the (CODE A) or (CODE B) character just before the last numeric data. When (FNC1), if found in the number, breaks a pair of digits in the number, insert the (CODE A) or (CODE B) character before the numeric data preceding the (FNC1). Selection of (CODE A) or (CODE B) should conform to (b) and (c) in c.
eIf four or more digits of numeric data continue in (CODE A) or (CODE B).
(a)When the numeric data is an even number of digits, insert the (CODE C) character just before the first numeric data.
(b)When the numeric data is an odd number of digits, insert the (CODE C) character immediately after the first numeric data.
fIf a control character appears in (CODE B):
(a)In the subsequent data, when a small letter appears before the next control character or four or more consecutive digits, insert the (SHIFT) character before the first control character.
(b)When not so, insert the (CODE B) character just before the first control character.
gIf a small letter appears in (CODE A):
(a)In the subsequent data, when a control character appears before the next small letter or four or more consecutive digits, insert the (SHIFT) character before the first small letter.
(b)When not so, insert the (CODE B) character just before the first small letter.
hIf any data other than the numerals appears in (CODE C):
(a)Insert the (CODE A) or (CODE B) character just before the data other than the numerals. Selection of (CODE A) or (CODE B) should conform to (b) and (c) in c.
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