问题:What cable do I use to connect a Printer to the Serial port on my PC?

分类标签:高速行式打印机设备

问题解答

Printer Serial port cable pinouts to an IBM-PC or equivalent.

PC-DB9 Printer-DB25
RX 2 ──────-──── 2 TX
TX 3 ──────-──── 3 RX
RTS 7 ┐
CTS 8 ┘
DSR 6 ─────-───── 20 DTR
GND 5 ─────-───── 7 GND

PC-DB9 Printer-DB9
*RX 2 ─────┐
*TX 3 ─────X-──── 2 RX
└───── 3 TX
RTS 7 ┐
CTS 8 ┘
DSR 6 ─────────── 4 DTR
GND 5 ─────────── 5 GND

PC-DB25 Printer-DB25
*TX 2 ─────┐
*RX 3 ─────X──── 2 TX
└──── 3 RX
RTS 4 ┐
CTS 5 ┘
DSR 6 ────────── 20 DTR
GND 7 ────────── 7 GND

PC-DB25 Printer-DB9
TX 2 ────────── 2 RX
RX 3 ────────── 3 TX
RTS 4 ┐
CTS 5 ┘
DSR 6 ────────── 4 DTR
GND 7 ────────── 5 GND

NOTE:

  1. 2 & 3 are crossed.
  2. Prefered handshake protocol is Xon-Xoff. Cable configuration will also work with DTR hardware handshake. Refer to printer manual for specific printer setups.

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