Epson LQ-2170 User Manual

c: Control flag

Bit 0 = Check digit

0: A check digit is 

not 

added

by the printer

1: A check digit is added by the

printer

Bit 1 = Human readable character

(HRC)

0: The HRC is added by the

printer

1: The HRC is not added by the

printer

Bit 2 = Position of flag character

(for EAN-13 and UPC-A only)

0: Center

1: Under

Bits 3-7 = Not used

Barcode data

Barcode data corresponds to the barcode symbology. The data number of
each barcode 

type 

is constant, The barcode is not printed if the following

valid characters are not set.

EAN-13

OD

oc

EAN-8

8

7

Interleaved 2 of 5

2 to FF

2 to FF

UPC-A

oc

OB

UPC-E

0C or 8

0B or 7

Code 39

1 to FF

1 to FF

Code 128

2 to FF

2 to FF

POSTNET

6 or 0A or 0C

5 or 9 or OB

Number of valid characters 1: Control flag c b0=0

Number of valid characters 2: Control flag c b0=l