Owner`s manual

9.2 V71 EIA-422 LINE INTERFACE

See Section 9.2.1 if using RJ-45 cabling (default) or

Section 9.2.2 if using DB-25 cabling.

NOTE: When using EIA-422 line interface, you must

access configuration mode and reconfigure the line

interface to EIA-422 as described in Section 11.4.

9.2.1 V71 RJ-45 CABLING FOR EIA-422

The V71 RJ-45 port uses the following signals for EIA-

422 communication:

RJ-45 PIN/SIGNAL DEFINITION FOR EIA-422 LINE INTERFACE

Pin EIA-

422

Signal

Directio

Description

1 HSO Output Handshake Out, enable/disable the receiving of characters

2 GND ---- Signal Ground

3 TX+ Output Transmit Data (+)

4 TX- Output Transmit Data (-)

5 RX- Input Receive Data (-)

6 RX+ Input Receive Data (+)

7 GND ---- Signal Ground

8 HSI Input Handshake In, enable/disable the transmission of

characters

You can use either RJ-45 (8-wire) or RJ-11 (4-wire)

cabling when connecting the host computer or terminal

to the V71 using EIA-422 line interface. The required

cable should have TX+ connected to RX+ (and vice

versa), TX- connected to RX- (and vice versa), HSO