Printronix SL_T5R Energy Star - Manual (Page 287)

RS-232
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nReverse Request. Driven by the host. Resets the interface and forces a
return to Compatibility Mode idle phase.
nData Available / nPeripheral Request. Driven by the printer. Indicates the
printer has encountered an error. (Data bits 1 and 5 in Nibble Mode.)
1284 Active / nAStrobe. Driven by the host. A peripheral device is selected.
Host Logic High. Driven by the host. When set to high, the host indicates all
of its signals are in a valid state. When set to low, the host indicates its power
is off or its signals are in an invalid state.
nInit. Resets init interface from the host.
RS-232 and Optional RS-422 Serial Interfaces
NOTE: The RS-232 and RS-422 serial interface circuit characteristics are
compatible with the Electronic Industry Association Specifications
EIA
®
-232-E and EIA-422-B.
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
use RS-422 to prevent data loss. You may also need to increase the
Buffer Size in K parameter to improve performance.
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 15. RS-232 Serial Interface Connector (9 Pin) Assignments
Input Signals Output Signals Miscellaneous
Signal Pin Signal Pin Signal Pin
Receive Data (RXD) 2 Transmit Status & Control
Data (TXD) 3 Chassis/Signal Ground 5
Clear To Send (CTS) 8 Request To Send (RTS) 7
Data Set Ready (DSR) 6 Data Terminal Ready (DTR) 4
Data Carrier Detect (DCD) 1
RS-232 and Optional RS-422 Serial Interfaces