Chapter 1: Installation and wiring
24 P/N 3102351-EN • REV 005 • ISS 28DEC18
Figure 31: Printer wiring
2) DB-25 serial port on back of printer
(5) To RS-232 card
Figure 32: DB-25 pin connections
2) Pin 2: TXD (red wire)
Pin 3: RXD (white wire)
(4) Pin 7: COM (black wire)
(6) Pin 20: DTR (green wire)
(7) DB-25 male (front view)
Table 6: SA-232 card to printer DB-25 connections
-232 card DB-25 Description
COM (pin 7) Black wire (ground connection)
DTR (pin 20) Green wire (printer supervision)
RXD (pin 3) White wire (communication)
TXD (pin 2) Red wire (communication)
Computer download wiring
To install wiring to a computer:
1. If you have a connected printer, disconnect it.
2. Locate a serial port (COM port) on the back of the computer.
Note: A USB to DB-9 converter may be required, as most computers no longer include
serial ports.
3. Connect the DB-9 end of the RS-232 cable to the COM port on the back of the computer.
4. Connect the other end of the RS-232 cable to the SA-232 card.
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