StarTech.com ICUSB422IS Bedienungsanleitung
Manual Revision: 11/11/2011
For the most up-to-date information, please visit: www.startech.com
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FR: Guide de l'utilisateur - fr.startech.com
ES: Guía del usuario - es.startech.com
IT: Guida per l'uso - it.startech.com
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PT: Guia do usuário - pt.startech.com
ICUSB422IS
1 Port Industrial USB to RS422/RS485 Serial
Adapter
*actual product may vary from photos
Instruction Manual
FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there
is no guarantee that interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which can be determined by
turning the equipment o and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit dierent from that to which the receiver
is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Use of Trademarks, Registered Trademarks, and other Protected Names and
Symbols
This manual may make reference to trademarks, registered trademarks, and other
protected names and/or symbols of third-party companies not related in any way to
StarTech.com. Where they occur these references are for illustrative purposes only and do not
represent an endorsement of a product or service by StarTech.com, or an endorsement of the
product(s) to which this manual applies by the third-party company in question. Regardless
of any direct acknowledgement elsewhere in the body of this document, StarTech.com hereby
acknowledges that all trademarks, registered trademarks, service marks, and other protected
names and/or symbols contained in this manual and related documents are the property of
their respective holders.
Instruction Manual
i
Table of Contents
Introduction ...........................................................................................1
Features ........................................................................................................................................................ 1
Package Contents ..................................................................................................................................... 1
Hardware Guide .....................................................................................2
Front Panel................................................................................................................................................... 2
Rear Panel .................................................................................................................................................... 2
Switch Settings.......................................................................................3
Switch Description.................................................................................................................................... 3
Installing Drivers ....................................................................................4
Male DB9 Pin Assignments and Cable Wiring....................................5
DB9-Male Pin Assignment ..................................................................................................................... 5
5-Pin Terminal Blocks Pin Assignment............................................................................................... 5
RS-422 Cable Wiring................................................................................................................................. 6
RS-485 Cable Wiring................................................................................................................................. 6
Specications..........................................................................................7
Technical Support ..................................................................................8
Warranty Information............................................................................8
Instruction Manual
1
Introduction
Thank you for purchasing the ICUSB422IS USB to RS422/485 Converter with Isolation.
This unit is an intelligent expansion module that connects to a PC or server via the
Universal Serial Bus (USB), providing high-speed serial connectivity. The RS485 port
supports Auto-Tranceiver-Turn-Around, to support applications that control the
transmitter driver. With the included software kit, it is an ideal solution for the most
critical applications.
Features
• Compatible with both USB 2.0 and USB 1.1
• Wall mountable design
• Optical Isolation and Surge Protection (2500 Vrms)
• Provides one RS422/485 port while powering the device through USB
• RS-485 mode supports Auto Transceiver Turn Around (ATTA)
• RS422/485 Baud rate up to 921.6 Kbps
• Supports 4-wire RS422 and 2-wire RS485 applications
• Supports DB9 and terminal block connector
Package Contents
• 6ft USB A to B Cable
• Driver CD
• USB to RS422/485 Converter
• User Manual
Instruction Manual
2
Hardware Guide
Front Panel
Note: The DB9 Male Connector at the Terminal Blocks are connected to
the same signals internally. They are not two individual ports. As such,
the signals coming from the Terminal Blocks and the DB9 connector are
identical
Rear Panel
RXD (down) and TXD
(up) Activity LEDs
DB9 Male Connector
5-Pin Terminal Blocks
RS422/485
DIP Switch Settings
To USB Host Port
Instruction Manual
3
Switch Settings
The default settings on the ICUSB422IS are set at 2-wire RS-485 mode. If you require
RS422, change the mode pin to the “422” position (ON). Maintain all other settings
unchanged.
Switch Description
Note: If the mode is set to 422, the ECHO setting will take no eect. The echo mode
is useful for the program to detect if the RS-485 bus were in a collision. If the echoed
data is not equal to the transmitted data, then the bus has been in a collission.
Switch
Pin #
Switch
Function
Switch
Positions Description
1RS-485 (OFF)
(Default) 2-wire RS-485 mode
RS-422 (ON) 4-wire RS-422 mode
2
ECHO (OFF) Transmitting data will be echoed
back
NO ECHO (ON)
(Default) No echo data
3NO TERM (OFF)
(default) Termination Resistor is Disabled
TERM (ON) Termination Resistor is Enabled
4RVD (OFF) Reserved for Future Use
(ON) Reserved for Future Use
Instruction Manual
4
Installing Drivers
The RS-422/485 Adapter Cable can be hot-plugged to the USB port of your computer
according to the USB specications. It supports Linux, Mac OS 9.8, X, and X (intel),
Windows 98 ME, 2000, 2003, XP, and Vista™. The drivers for each can be found in the
corresponding folder on the driver CD. If you are installing drivers for Windows 98, ME,
200, 2003, XP, or Vista™, Specify your CD-ROM drive and the location according to the
following folder list:
Instruction Manual
5
Male DB9 Pin Assignments
and Cable Wiring
DB9-Male Pin Assignment
5-Pin Terminal Blocks Pin Assignment
Pins Signal
1 TXD- (DATA-)
2 TXD+ (DATA+)
3 RXD+
4 RXD-
5 GND
6 NC
7 NC
8 NC
9 NC
NC= No Connection
Instruction Manual
6
RS-422 Cable Wiring
DB9 (RS422 to USB Cable) DB9 (RS422 Device)
1. TXD- 1. TXD-
2. TXD+ 2. TXD+
3. RXD+ 3. RXD+
4. RXD- 4. RXD-
5. GND 5. GND
RS-485 Cable Wiring
DB9 (RS485 to USB Cable) DB9 (RS485 Device)
1. DATA- 1. DATA-
2. DATA+ 2. DATA+
3. NC 3. NC
4. NC 4. NC
5. GND 5. GND
Instruction Manual
7
Specications
Type Specications
Connectors USB type B, DB9 Male
Number of Ports 1 RS422/485 (for DB9M or
Terminal Blocks)
RS-422 Signals TXD+, TXD-, RXD+, RXD-,
GND
RS-485 Signals (2-wire) DATA+, DATA-, GND
Baud Rate 300 bps to 921.6Kbps
Data Bits 7,8
Stop Bits 1, 2
Parity None, Even, Odd, Mark,
Space
Isolation 2500Vrms
Surge Protection 500Watts
Power Requirements 5V/200mA (USB Bus
Powered)
Operating Temperature 0 to 55°C(32 to 132°F)
Operating Humidity 5 to 95% RH
Storage Temperature -20 to 85°C (-4 to 185°F)
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