Printer Serial Port - Intermec EasyCoder 4420 User Manual

Appendix C — Communications Reference
RS-232, RS-422, and RS-485 Serial Interface Pin Assignments (continued)
Interface Pin
RS-232/422/485 7
RS-232/422/485 11
RS-422/485 13
RS-422/485 14
RS-422/485 16
RS-422/485 19
RS-232/422/485 20

Printer Serial Port

100
Name
Signal Ground
(SG)
Printer Status (PS)
Input B
Output A
Input A
Output B
Data Terminal
Ready (DTR)
The rear panel of the printer contains the serial port connector. It is a 25-
pin D-style subminiature receptacle. The port is wired as a data terminal
equipment (DTE) device.
2 5
1 3
2 4
1 2
2 3
1 1
2 2
1 0
2 1
DTR
9
2 0
8
1 9
7
1 8
6
1 7
5
1 6
4
1 5
3
1 4
2
1
Serial port pin assignments: This illustration shows the serial port pin assignments.
EasyCoder 4420 and 4440 Bar Code Label Printer User's Manual
Operation
To enable communications, connect to signal ground of connected
device. Completes circuit for all RS-232 signals.
Output: When not using software flow control (XON/XOFF),
connect to input of connected device (for example, CTS).
Indicates printer mechanical status and status of printer input
buffer.
Input: Serial differential data to the printer.
Output: Serial differential data from the printer.
Input: Serial differential data to the printer.
Output: Serial differential data from the printer.
Output: When you use a modem, connect to modem DTR pin.
When using Intermec Standard protocol, this pin indicates that
the printer is switched on.
When using XON/XOFF or hardware flow control, this pin
indicates the printer mechanical status and the status of the printer
input buffer.
PS
SG
CTS
RTS
RD
TD
GND
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