B.4 RS-232C Protocol
A protocol is a set of rules the computer follows in sending data to the
printer. The RS-232C parameters are stored in battery backed-up memory.
They are indicated on the status printout. They can be changed by the
FRPO (firmware reprogram) command described in the
Reference
provided on the CD-ROM supplied with the printer. The
parameters and their identification codes are given below.
H1: Baud rate
Parameter value
12
24
48
96
19
38
57
11
The factory setting is 9600 baud.
H2: Data bits
7 or 8, factory-set to 8.
H3: Stop bits
1 or 2, factory-set to 1.
H4: Parity
Parameter value
0
1
2
3
The factory setting is None (0 on the status printout).
Baud rate
1200
2400
4800
9600
19200
38400
57600
115200
Meaning
None
Odd
Even
Ignore
B-9
RS-232C Protocol
Technical