SIIG RS-422, RS-485, ID-SC0P11-S1, ID-SC0Q11-S1, ID-SC0R11-S1 Quick Installation Manual

USB to RS-422/485
Serial Adapter

Quick Installation Guide

Introduction

The USB to RS-422/485 Serial Adapter provides
additional RS-422/485 serial port(s) to your
systems.

Key Features and Benefits

• Compliant with Universal Serial Bus 2.0
Specification

• Supports serial port data transfer rates up
to 1 Mb/s

• Built in 15KVDC ESD serial interface
protection

• LED indicators for TxD/RxD activities

• Metal housing with wall mount ready

System Requirements

• Desktop or notebook computer with an
available USB port

04-0862A

1

• Windows® 8 (32-/64-bit) / Windows 7 (32­/64-bit) / Vista (32-/64-bit) / XP (32-/64­bit) / Server 2003 & 2008 (32-/64-bit) /
Server 2008 R2

Package Contents

• USB to RS-422/485 Serial Adapter

• USB cable (Type A/B)

• Termination resistor jumpers (2 for ID­SC0P11-S1, 4 for ID-SC0Q11-S1, 8 for ID­SC0R11-S1)

• Software CD & quick installation guide

Layout

1-Port USB to RS-422/485 Serial Adapter

Status LED

USB Type B

Serial output

DIP switch

Figure 1: ID-SC0P11-S1 Layout

2

2-Port USB to RS-422/485 Serial Adapter

Status LED

USB Type B

DIP switch

Serial output

DIP switch (P2)

(P1)

Figure 2: ID-SC0Q11-S1 Layout

4-Port USB to RS-422/485 Serial Adapter

Serial output

Status LED

5V power jack

Figure 3: ID-SC0R11-S1 Layout

Status LED

• Tx: Flashing green when sending data

• Rx: Flashing yellow when receiving data

DIP switch (P1-P4)

USB Type B

(optional)

3

• 5V power jack (optional): Connect your
power adapter here (not included).

Note: Most serial devices do not require

additional power through the serial port.
Refer to your serial device's manual for
more information.

DIP Switch

Auto RS-422/485 (1-ON, 2-OFF)

This is default setting. The COM port will
automatically detect device status and control
the data transmitting or receiving. See Figure 4a.

RS-422 or 4-Wire RS-485 (1-OFF, 2-ON)

Full duplex mode. See Figure 4b.

Auto RS-422/485 RS-422 or 4-Wire RS-485

Figure 4a Figure 4b

4

Termination Resistor

Open the cover of the USB to RS-422/485 Serial
Adapter to configure the jumper settings.

1. Unscrew the screw(s) at the bottom of the

Adapter.

Bottom screw

Figure 5

2. Slide the bottom cover in the direction of the

serial output to open.

Serial output

Figure 6

3. Follow the instructions on page 6 to
configure the jumper settings.

5