IBM 6400 Setup Guide

4–54
6400 Line Matrix Printers Setup Guide, Cabinet and Pedestal Models
Interface Type
This parameter configures the electrical interface for the serial port, as
follows:
• RS–232 (the default)
• RS–422
Data Protocol
You may select one of the following serial interface protocols to meet the
host interface requirements.
• XON / XOFF (the default) — Transmit On / Transmit Off. The printer
controls the flow of communication from the host by telling the host to
turn the transmission on and off. This is the factory default serial
protocol.
• ETX / ACK — End of Text / Acknowledge. The host controls the flow
of communication to the printer by sending a block of data and ending
the block with an End of Text (ETX) signal. When the printer receives
the ETX signal, it will acknowledge it has received the entire block of
data.
• ACK / NAK — Acknowledge / Negative Acknowledge. ACK means
acknowledge; the device acknowledges it has accepted a transmission.
NAK means a negative acknowledge; the device did not receive the
transmission.
• DTR — (DTE Ready). The printer controls the data flow by asserting or
de–asserting this hardware signal to the host. If there is enough room in the
printer buffer, the printer will send a high signal; if the buffer is full the
printer will send a low signal. DTR tells the host if it is safe to send more
data. (If the host sends data during an unsafe condition, data will be lost.)
Baud Rate
This 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.
• 600 BAUD
• 1200 BAUD

IBM 6400 Specifications

General

Brand	IBM
Model	6400
Category	Printer
Language	English