Printronix

P9212, Setup Manual

Page: 101 / 206

3–59 Configuring the Printer
Data Protocol
The Data Protocol parameter selects one of several different serial interface
protocols. These protocols provide for flow control and other host interface
requirements. These are discussed on page 4–11 in Chapter 4, Printer
Interfaces.
•
X-ON/X-OFF
•
ACK/NAK
•
ETX/ACK
•
DTR, RC, or RTS
IMPORTANT
When the Data Protocol parameter is set either to the ACK/NAK
protocol or to the ETX/ACK protocol, the protocol consumes all ETX
characters. Because of this, if you are using ACK/NAK or ETX/ACK,
you cannot use the ETX character for other control functions.
Data Rate
The Data Rate parameter sets the baud rate of the serial interface in the
printer. Baud rate is the speed at which serial data is transferred between the
host computer and the printer.
IMPORTANT
The Data Rate parameter in the printer must be set to the same baud
rate as the serial interface in the host computer (at the other end of the
printer’s data cable). Otherwise, the printer might not work on-line, and
data characters from the computer might not print or might print as
“garbled” text.
Word Length
The Word Length parameter sets the length of the serial data word. The
length of the data word can be set to 7 or 8 bits, and must match the
corresponding word length setting in the host computer.