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RS-232 And Optional RS-422 Serial Interfaces
NOTE: The RS-232 and RS-422 serial interface circuit characteristics are
The RS-232 and RS-422 serial interfaces enable the printer to operate with bit
serial devices that are compatible with an RS-232 controller. The input serial
data transfer rate (in baud) is selectable from the printer's control panel. Baud
rates of 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200 are
available.
NOTE: If you select a baud rate that is greater than 19200, you may need to
The length of the data cable from the host computer to the printer must not
exceed 50 feet (15 meters) for RS-232 or 4000 feet (1220 meters) for RS-422.
(A copper conductor, twisted-pair telephone cable with a shunt capacitance of
16 pF/foot [52.5 pF/meter] terminated in a 100 ohm resistive load must be
used for the RS-422.)
RS-232
Table 14. RS-232 Serial Interface Connector (9 Pin) Assignments
Input Signals
Signal
Receive Data (RXD)
Clear To Send (CTS)
Data Set Ready (DSR)
Data Carrier Detect (DCD)
Received Data (RXD). Serial data stream to the printer.
Transmitted Data (TXD). Serial data stream from the printer for transmitting
status and control information to the host. Subject to protocol selection.
Request To Send (RTS). Control signal from the printer. Subject to
configuration.
Clear To Send (CTS). Status signal to the printer indicating the host is ready
to receive data/status signals from the printer.
Data Set Ready (DSR). Status signal to the printer indicating the host is in a
ready condition.
Data Carrier Detect (DCD). Status signal to the printer. The ON condition is
required for the printer to receive data.
RS-232 And Optional RS-422 Serial Interfaces
compatible with the Electronic Industry Association Specifications
®
EIA
-232-E and EIA-422-B.
use RS-422 to prevent data loss. You may also need to increase the
Buffer Size in K parameter from the default (1 Kbyte) to improve
performance.
Output Signals
Pin
Signal
2
Transmit Status & Control
Data (TXD)
8
Request To Send (RTS)
6
Data Terminal Ready (DTR)
1
Miscellaneous
Pin
Signal
3
Chassis/Signal Ground
7
4
RS-232
Pin
5
303
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