Zebra EPL2 Specifications Page 33

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B Com mand - Bar Code
Code 128 Bar Code
Function Characters
(continued)
A sin gle FCN4 tog gles be tween stan dard and
ex tended ASCII mode for only a sin gle fol low -
ing data char ac ter. This is re ferred to as shift ing
into ex tended ASCII mode or shift ing into stan -
dard ASCII mode.
Both code sets A and B are needed to rep re sent
the en tire ex tended ASCII char ac ter set, just as
both sets are needed to rep re sent the stan dard
ASCII char ac ter set.
FCN4s can be in serted man u ally, if nec es sary
or de sired, by fol low ing the syn tax de scribed
above. The printer will, how ever, in sert them
au to mat i cally if ex tended ASCII char ac ters are
en coun tered in the DATA. It will do so in the
most ef fi cient man ner pos si ble:
If up to 4 con tig u ous ex tended ASCII char ac -
ters are en coun tered, it will shift into ex tended
ASCII mode by in sert ing a sin gle FCN4 be -
fore each one;
If 5 or more con tig u ous ex tended ASCII char -
ac ters are en coun tered, it will latch into ex -
tended ASCII mode by in sert ing two FCN4s
be fore them.
While latched into ex tended ASCII mode, it
will ap ply the same rules if stan dard ASCII
char ac ters are en coun tered.
Thus, the pre ferred way to en code ex tended
ASCII char ac ters is to sim ply em bed them in the
DATA and let the printer man age the en cod ing
task. For best re sults, the code set should also
not be spec i fied (i.e., p4 = 1). FCN4 s should be
man u ally in serted only in sys tems where ex -
tended ASCII char ac ters can not be trans mit ted
to the printer.
It is il le gal to mix au to matic and man ual modes
within the data for a sin gle sym bol; i.e., an ex tended
ASCII char ac ter en coun tered in the data af ter an will
be con sid ered a syn tax er ror. Like wise, an FCN4 af -
ter an ex tended ASCII char ac ter will also be con sid -
ered a syn tax er ror.
980352-001 Rev.D 3-15
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