User`s guide

User's Guide 70
Appendix B: INTERFACE SPECIFICATIONS
This appendix presents the interface specifications of I/O ports for the printer. These specifications
include pin assignments, protocols and detailed information about how to properly interface your printer
with your host or terminal.
Serial
The RS-232 connector on the printer side is a female, DB-9.
Pin Direction Definition
1In DSR
2In RxData
3Out TxData
5 - Ground
6Out DTR
7Out RTS
8In CTS
9Out +5V
Note: Pin 9 is reserved for KDU (keyboard device unit) only, therefore do not connect this pin if you
are using a general host like a PC.