SIIG 485 PCI, DP RS422 User Manual

DP RS422/485 PCI
Express Adapter Card

Quick Installation Guide

Introduction

The DP RS422/485 PCI Express Adapter Card is a
high-speed serial card that provides additional
serial ports to your system.

Key Features and Benefits

• Compliant with PCI Express Base

Specification, Revision 1.1

• Supports serial port transfer rate up to

921Kb/s

• Built-in 15KVDC ESD serial interface

protection

• Built in 128-byte FIFO buffer

• RS-422 & RS485 auto detect and switch

• Plug-n-Play, I/O address and IRQ assigned

by BIOS

04-0810A

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System Requirements

• PCI Express equipped system with an
available PCI Express slot

• Windows

®

7 (32-/64-bit) / Vista (32-/64­bit) / XP (32-/64-bit) / Server 2003 &
2008(32-/64-bit) / Server 2008 R2 / 2000

Package Contents

• DP RS422/485 PCI Express Adapter Card

• Spare enhanced low-profile bracket

• Fan Out Cable

• Jumper (4pcs for ID-P20211-S1; 8pcs for
ID-P40411-S1 )

• Quick installation guide

• Driver CD

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Layout

ID-P20211-S1

Figure 1: 2-Port RS422/485 PCI Express Adapter Card

ID-P40411-S1

Figure 2: 4-Port RS422/485 PCI Express Adapter Card

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Pin Assignment

Male DB9 Connector:

1

69

Female DB44 Connector:

5

15

30

4

44

1

31

16

2-Port RS422/485 PCI Express:

4-Port RS422/485 PCI Express:

5

Jumper Settings

RS-422 or 4-wire RS-485 working model with
termination resistor

2-wire RS-485 working model with termination
resistor

This RS-422/485 PCI Express Serial board equips
independent TX and RX termination resistors for
each serial port. User can modify the jumper
setting (short the pins) to avoid impedance
mismatched problem when operate under Multi­drop transmission. Resistors should be added
near the receiving side.

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