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EasySync Ltd
USB2-H-9002-M Hi-Speed USB to 2-Port
RS232/RS485 Adapter
Data Sheet
Document Reference No.: ES_000046
Version 1.0
Issue Date: 2010-06-15
The USB2-H-9002-M provides a simple method of adapting legacy serial devices with RS232 and
RS485 interfaces to modern USB ports by incorporating the FTDI FT2232H Hi-Speed USB bridge chip.
The adaptor which is contained within a metal case can be externally powered and can supply an
output of +5VDC @ up to 250mA on the 5mm terminal block connectors. Indicator LEDs provide
functional status.
EasySync Ltd
Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH, United Kingdom
Tel.: +44 (0) 141 418 0181
Fax: + 44 (0) 141 418 0110
Web:
http://www.easysync.co.uk
E-Mail (Support):
support@easysync.co.uk
Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced
in any material or electronic form without the prior written consent of the copyright holder. This product and its documentat ion are
supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. EasySync Ltd will
not accept any claim for damages howsoever arising as a result of use or failure of this product. Your statutory rights are n ot affected.
This product or any variant of it is not intended for use in any medical appliance, device or system in which the failure of the product
might reasonably be expected to result in personal injury. This document provides preliminary information that may be subject to
change without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this document.
EasySync Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH, United Kingdom. Scotland Registered Number:
SC224924
Copyright © 2010 EasySync Limited
Document Reference No.: ES_000046
USB2-H-9002-M Hi-Speed USB to 2-Port RS232/RS485 Adapter Data Sheet
Version 1.0
Clearance No.: ES
#33
1
Introduction ................................................................................... 4
1.1
1.2
1.3
1.4
1.5
1.6
Functional Description .................................................................................. 4
LED Description ............................................................................................. 5
Block Diagram ............................................................................................... 5
Block description ....................................................................................... 5
Features ........................................................................................................ 6
Performance Figures ..................................................................................... 8
Ordering Information .................................................................................... 8
1.3.1
2
Installation ..................................................................................... 9
2.1
2.2
2.3
Example Applications and Configurations ..................................................... 9
Hardware Configuration ................................................................................ 9
Mounting .................................................................................................11
Microsoft Windows ....................................................................................12
Mac OS X, Linux, Windows CE ....................................................................16
Device Driver Installation ........................................................................... 12
2.2.1
2.3.1
2.3.2
3
Connections .................................................................................. 17
3.1
External Connectors .................................................................................... 17
USB ........................................................................................................17
RS232 Connections ...................................................................................17
RS485 Connections ...................................................................................18
3.1.1
3.1.2
3.1.3
4
Electrical details ........................................................................... 19
4.1
4.2
4.3
4.4
4.5
USB ............................................................................................................. 19
RS232 ......................................................................................................... 19
PSU Input ................................................................................................... 19
RS485 ......................................................................................................... 20
Power Output .............................................................................................. 20
5
6
Mechanical Details ........................................................................ 21
Physical Environment Details ....................................................... 23
6.1
6.2
Storage ....................................................................................................... 23
Operating .................................................................................................... 23
7
Environmental Approvals & Declarations ...................................... 24
7.1
7.2
7.3
7.4
EMI Compatibility ........................................................................................ 24
Safety ......................................................................................................... 24
Environmental ............................................................................................. 24
Reliability .................................................................................................... 24
MTTF ......................................................................................................24
7.4.1
©2010 EasySync Ltd.
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Document Reference No.: ES_000046
USB2-H-9002-M Hi-Speed USB to 2-Port RS232/RS485 Adapter Data Sheet
Version 1.0
Clearance No.: ES
#33
7.5
Import / Export Information ....................................................................... 25
8
Troubleshooting ........................................................................... 26
8.1
8.2
8.3
Hardware .................................................................................................... 26
Device Driver .............................................................................................. 26
Technical Support ....................................................................................... 27
9
Contact Information ..................................................................... 28
Appendix A - List of Figures and Tables ............................................. 29
Appendix B - Revision History ............................................................ 30
©2010 EasySync Ltd.
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Document Reference No.: ES_000046
USB2-H-9002-M Hi-Speed USB to 2-Port RS232/RS485 Adapter Data Sheet
Version 1.0
Clearance No.: ES
#33
1
Introduction
1.1
Functional Description
The USB2-H-9002-M adaptor is a USB to dual interface RS232 or RS485 level serial UART adaptor
incorporating FTDI’s FT2232H Hi-Speed USB2.0 (480Mb/s) to dual serial UART interface IC device. The
FT2232H handles all the USB signaling and protocols. The adaptor is housed in a metal enclosure and
provides a fast, simple way to connect devices with an RS232 or RS485 interface to USB.
The integrated electronics of the USB2-H-9002-M utilise the FTDI FT2232H and includes RS485 level
shifters and RS232 level shifters plus TXD/RXD LEDs to provide a visual indication of data traffic through
the adapter. Selection of RS232 or RS485 signalling is made using DIL switches on the front of the
adaptor. Each of the dual channels can be independently configured as either RS232 or RS485.
Figure 1.1 USB2-H-9002-M
Flexible mounting allows the USB2-H-9002-M to be used in a variety of applications, from a portable
adapter to accompany a laptop to permanent installations in industrial, commercial and retail locations.
The metal enclosure incorporates a standard USB-B client connector for connection to an upstream host
or hub port. RS232 and RS485-level signals are available on two 5mm terminal block connectors. The
maximum RS485-level data rate is 10Mbps and the maximum RS232-level data rate is 1Mbps.
The adapter can be independently powered using an external +5V DC (1A) power supply which connects
via a 2.1mm jack socket. It can also be powered from the USB interface if required.
The USB2-H-9002-M adapter requires USB device drivers, available free from
http://www.easysync-
ltd.com.
These are used to make the USB2-H-9002-M appear as a Virtual COM Port (VCP). This allows
existing serial communications software, such as HyperTerminal, to exchange data through the USB2-H-
9002-M to a legacy RS485 or RS232 peripheral device.
©2010 EasySync Ltd.
4
Document Reference No.: ES_000046
USB2-H-9002-M Hi-Speed USB to 2-Port RS232/RS485 Adapter Data Sheet
Version 1.0
Clearance No.: ES
#33
1.2
LED Description
The USB2-H-9002-M uses 5 LEDs to indicate a valid link as well as data traffic according to the following
table:
LED
Color
Yellow
Function
Description
Quantity
PWR
ON when USB2-H-9002-M is powered, configured and ready for use.
1
Red
TxD Activity
Flashes when data is transmitted from the USB2-H-9002-M to the
attached RS232 or RS485 device. One LED for each UART channel
Flashes when data is transmitted from the attached RS232 or RS485
device to the USB2-H-9002-M. One for each UART channel.
2
Green
RxD Activity
2
Table 1.1 – LED Description
1.3
Block Diagram
RS485
Level
Shifter
Switch
circuit
RS232
Level
Shifter
RS485
Level
Shifter
RS232
Level
Shifter
3Pin 5mm
Terminal
Block
9Pin 5mm
Terminal
Block
3Pin 5mm
Terminal
Block
9Pin 5mm
Terminal
Block
Channel 1
USB B
Client
Connector
FTDI FT2232H
Hi-Speed USB Serial
Bridge
Channel 2
Switch
circuit
Figure 1.2 USB2-H-9002-M Block Diagram
1.3.1 Block description
USB standard B Client Connector
USB B Client Connector
This connector provides the interface for connection to a USB Host or Hub port. A standard “A to B”
cable is provided, though one of a different length may also be used. The maximum cable length is 5
meters, according to the USB 2.0 specification.
FTDI FT2232H
FT2232H Hi-Speed USB2.0 (480Mb/s) is a dual serial UART interface IC device. Operating system device
drivers are required in order to work with the FT2232H to provide the Virtual COM Port serial
functionality.
©2010 EasySync Ltd.
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