SIIG ID-P40411-S1 User manual

1
DP RS422/485 PCI
Express Adapter Card
Quick Installation Guide
04-0810A
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

2
System Requirements
•PCI Express equipped system with an
available PCI Express slot
•Windows®
7 (32-/64-bit) / Vista (32-/64-
bit) / XP (32-/64-bit) / Server 2003 &
2008(32-/64-bit) / Server 2008 R2 / 2000
PackageContents
•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

3
Layout
Figure 1: 2-Port RS422/485 PCI Express Adapter Card
Figure 2: 4-Port RS422/485 PCI Express Adapter Card
ID-P20211-S1
ID-P40411-S1

4
Pin Assignment
Male DB9 Connector:
Female DB44 Connector:
5
69
1
15 1
16
30
44 31

5
4-Port RS422/485 PCI Express:
2-Port RS422/485 PCI Express:

6
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 Multi-
drop transmission. Resistors should be added
near the receiving side.

7
Default jumper setting is Open (disconnect 120
ohms termination resistors across the two wires)
DP 2-Port RS422/485 PCI Express Adapter Card
Figure 3: ID-P20211-S1 Pin Layout
J4
J1

8
1. Pin 1-2 jumper setting is short by default,
Auto Detect / RS-485(2-Wire)
This COM port can automatically detect
the state of RS-422 full duplex or RS-485
half duplex and control the data
transmitting and receiving wires at the same
port.
2. Pin 2-3 jumper setting is short for RS-422/
RS-485(4-Wire)
This COM port forces to run RS-422 full
duplex mode.
Figure 4: ID-P20211-S1 Pin Assignment

9
DP 4-Port RS422/485 PCI Express Adapter Card
Figure 5: ID-P40411-S1 Pin Layout
Figure 6: ID-P40411-S1 Pin Assignment
J1
J8 J2
J7

10
1. Pin 1-2 jumper setting is short by default,
Auto Detect / RS-485(2-Wire)
This COM port can automatically detect
the state of RS-422 full duplex or RS-485
half duplex and control the data
transmitting and receiving wires at the same
port.
2. Pin 2-3 jumper setting is short for RS-422/
RS-485(4-Wire)
This COM port forces to run RS-422 full
duplex mode.