Epson LQ-670 User Manual page 159

c: Control flag
Bit 0 = Check d igit
0: The printer does not add a check d igit.
1: The printer ad d s a check d igit.
Bit 1 = H um an read able character (H RC)
0: The printer ad d s the H RC.
1: The p rinter d oes not ad d the H RC.
Bit 2 = Position of flag character (for EAN -13 and UPC-A only)
0: Center
1: Und er
Bits 3 7 = N ot used
Ba rcode da ta
Barcod e data corresponds to the barcode sym bology. The data num ber of
each barcod e typ e is constant. The barcod e is printed only if the follow ing
valid characters are set.
Ba rcode type
EAN-13
EAN-8
Interlea ve d 2 of 5
UPC-A
UPC-E
Cod e 39
Cod e 128
POSTNET
N u m ber of valid characters 1: Control flag c b0=0
N u m ber of valid characters 2: Control flag c b0=1
B-4
Command Lists and Character Tables
Number of va lid
cha ra cters 1 (HEX)
0D
8
2 to FF
0C
0C or 8
1 to FF
2 to FF
6 or 0A o r 0C
Number of va lid
cha ra cters 2 (HEX)
0C
7
2 to FF
0B
0B o r 7
1 to FF
2 to FF
5 o r 9 or 0B