Lantronix XPress-DR-IAP Betriebsanweisung PDF herunterladen (Seite 20)

Introduction

1.5 RJ-45 Serial Connector

The serial RJ-45 serial connector supports up to 115200 bits per second and has the

following signals.

Table 1 - Serial RJ45 Pinouts

Pin Direction Name Function

1 Not Connected None

Hard-wired output

DTR DTR Data Terminal Ready

3 To XPress DR

RXD or RXA

RS-232: RXD (Received Data)

RS-422/485:RXA (Received Data -)

4 From XPress DR TXD or TXA RS-232: TXD (Transmit Data)

RS-422/485: TXA (Transmit Data -)

5 GND Ground

6 To XPress DR CTS or RXB RS-232: CTS (Clear to Send)

RS-422/485: RXB (Received Data +)

7 From XPress DR RTS or TXB RS-232: RTS (Request to Send)

RS-422/485: TXB (Transmit Data +)

8 Not Connected None

Note: Pin 2 (DTR) is hard wired (+12V) and cannot be affected by software control.

Note: For RS-485 2-wire functionality, pins 3 & 4 and 6 & 7 must be connected together.

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Lantronix XPress-DR-IAP Betriebsanweisung Seite 20