RS-232C Protocol (EP C270N only)
Parameters of the RS-232C Protocol
ADVANCED OPERATION GUIDE
A protocol is a set of rules followed by various devices to send or receive
data. The parameters of the RS-232C protocol are stored in the battery-
powered memory of the printer. You can verify these parameters on the
status printout as marked by the following identifications:
•
H1: Baud rate
•
H2: Number of data bits
•
H3: Number of stop bits
•
H4: Parity
•
H5: Protocol logic
•
H6: Buffer-nearly-full threshold
•
H7: Buffer nearly-empty threshold
•
H8: Received data buffer size
The parameters can be changed from the printer operator panel. To
change the value for the serial interface parameters, see Changing Serial
Interface Parameters (EP C270N only) on page 2-30.
This following section outlines the parameters and their values you can
select on the operator panel:
H1: Baud rate
Parameter value
12
24
48
96
19
38
57
11
The factory setting is 96 (9600 baud).
H2: Number of data bits
7 or 8. The factory setting is 8.
H3: Number of stop bits
1 or 2. The factory setting is 1.
Baud rate
1200
2400
4800
9600
19200
38400
57600
115200
Computer Interface
4-7