ID Innovations Bar code Mini Decoder - Manual (Page 34)

Appendices
34
FNC 3 (Reader Initialization) instructs the decoder to interpret the data from the symbol containing the FNC 3 character as
instructions for programming the reader. This character can occur anywhere in the symbol. The data from the symbol is not
transmitted by the decoder.
Note: Do not create bar codes with the FNC 3 character unless instructed to do so by Technical Support. These bar codes
are used to control and configure the decoder.
FNC 4 provides access to the extended ASCII mode. Data encoded in code set A and B have their values increased by 128
from the normal ASCII values. For example, code set B value 65 normally encodes an "a" or ASCII data value 97; therefore,
using FNC 4, it would encode an extended ASCII data value 225 or 97+128. Code subset C's numeric characters (ASCII values
48 - 57) are not changed by using FNC 4.
A single FNC 4 toggles in or out of extended ASCII mode for the next data character. Two consecutive FNC 4 symbol
characters toggle the extended ASCII mode state for all succeeding data characters until another double FNC 4 or the end of
the symbol. (A single FNC 4 changes back to normal mode for a single character.)