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EasySync Ltd
USB2-F-5001 Full-Speed USB to 1-Port
RS485 Adapter
Data Sheet
Document Reference No.: ES_0000177
Version 1.02
Issue Date: 2009-08-24
The USB-COM-Plus adaptors are a family of communication devices from EasySync Ltd. This model,
USB2-F-5001, provides a simple method of adapting legacy serial devices with RS485 interfaces to
modern USB ports by incorporating the FTDI FT232R bridge chip.
A power supply output of +5VDC @ up to 250mA is available on the 9-pin D-sub connector.
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 documentation 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 not 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 © 2009 EasySync Limited
Document Reference No.: ES_000017
USB2-F-5001 Full-Speed USB to 1-Port RS485 Adapter Data Sheet Version 1.02
Clearance No.: ES
#08
1
Introduction ................................................................................... 4
1.1
1.2
1.3
Functional Description .................................................................................. 4
LED Description ............................................................................................. 5
Block Diagram ............................................................................................... 5
Block description ....................................................................................... 5
1.3.1
1.4
1.5
1.6
Features ........................................................................................................ 6
Performance Figures ..................................................................................... 6
Ordering Information .................................................................................... 7
2
Installation ..................................................................................... 8
2.1
2.2
Example Applications and Configurations ..................................................... 8
Hardware Installation ................................................................................... 8
Mounting .................................................................................................. 8
Wiring ...................................................................................................... 8
2.2.1
2.2.2
2.3
Device Driver Installation ........................................................................... 10
Microsoft Windows ....................................................................................10
Mac OS X, Linux, Windows CE ....................................................................13
2.3.1
2.3.2
2.4
Local Echo ................................................................................................... 13
3
Connections .................................................................................. 14
3.1
External Connectors .................................................................................... 14
USB ........................................................................................................14
RS485.....................................................................................................15
3.1.1
3.1.2
4
Electrical details ........................................................................... 16
4.1
4.2
4.3
USB ............................................................................................................. 16
RS485 ......................................................................................................... 17
Power Output .............................................................................................. 17
5
Mechanical Details ........................................................................ 18
5.1
5.2
Module Mechanical Dimensions ................................................................... 18
UniClip™ Mechanical Dimensions ................................................................ 19
6
Physical Environment Details ....................................................... 20
6.1
6.2
Storage ....................................................................................................... 20
Operating .................................................................................................... 20
7
Environmental Approvals & Declarations ...................................... 21
7.1
7.2
7.3
EMI Compatibility ........................................................................................ 21
Safety ......................................................................................................... 21
Environmental ............................................................................................. 21
©2009 EasySync Ltd.
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Document Reference No.: ES_000017
USB2-F-5001 Full-Speed USB to 1-Port RS485 Adapter Data Sheet Version 1.02
Clearance No.: ES
#08
7.4
Reliability .................................................................................................... 21
MTTF ......................................................................................................21
7.4.1
7.5
Import / Export Information....................................................................... 22
8
Troubleshooting ........................................................................... 23
8.1
8.2
8.3
Hardware .................................................................................................... 23
Device Driver .............................................................................................. 23
Technical Support ....................................................................................... 23
9
Contact Information ..................................................................... 25
Appendix A - List of Figures and Tables ............................................. 26
Appendix B - Revision History ............................................................ 27
©2009 EasySync Ltd.
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Document Reference No.: ES_000017
USB2-F-5001 Full-Speed USB to 1-Port RS485 Adapter Data Sheet Version 1.02
Clearance No.: ES
#08
1
Introduction
1.1
Functional Description
The USB-COM-Plus adaptors are a family of communication devices. This model, USB2-F-5001, provides
a simple method of adapting legacy serial devices with RS485 interfaces to modern USB ports. This is
accomplished by incorporating the industry standard FTDI FT232R USB-Serial bridge chip.
Each USB2-F-5001 adapter contains a small internal electronic circuit board which utilises the FTDI
FT232R, mounted inside a rugged plastic enclosure capable of withstanding industrial temperature
ranges. The integrated electronics also include RS485 level shifters and TXD/RXD LEDs to provide a
visual indication of data traffic through the adapter.
Figure 1.1 USB-COM-Plus USB2-F-5001
Flexible mounting allows the USB2-F-5001 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 enclosure incorporates a standard USB-B client connector for connection to an upstream host or hub
port. RS485-level signals, are available on an industry-standard DE-9P connector. The maximum
RS485-level data rate is 1Mbps.
The USB2-F-5001 adapter require USB device drivers, available free from
http://www.easysync.co.uk
or
http://www.easysync-ltd.com,
which are used to make the USB2-F-5001 appear as a Virtual COM Port
(VCP). This allows existing serial communications software, such as HyperTerminal, to exchange data
through the USB2-F-5001 to a legacy RS485 peripheral device.
Pin 9 of the D-sub connector can provide +5V power output with maximum 450mA.
©2009 EasySync Ltd.
4
Document Reference No.: ES_000017
USB2-F-5001 Full-Speed USB to 1-Port RS485 Adapter Data Sheet Version 1.02
Clearance No.: ES
#08
1.2
LED Description
The USB2-F-5001 uses three LEDs to indicate a valid link as well as data traffic according to the following
table:
LED Color
Yellow
Function
Enumerated
Description
ON when USB2-F-5001 is configured and ready
Green
TxD Activity
Flashes when data is transmitted from the USB2-F-5001 to the attached
RS485 device
Flashes when data is transmitted from the attached RS485 device to the
USB2-F-5001
Red
RxD Activity
Table 1.1 – LED Description
1.3
Block Diagram
Figure 1.2 USB2-F-5001 Block Diagram
1.3.1 Block description
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 FT232R
The FTDI FT232R provides the USB-to-Serial conversion. Operating system device drivers are required in
order to work with the FT232R to provide the Virtual COM Port serial functionality.
RS485 Level Shifter
The RS485 level shifter converts the signals provided by the FT232R into the voltage levels required by
RS485 devices.
DE-9P Connector (Male)
The DE-9P connector is configured in an industry standard (TIA/EIA-485) pin-out to provide connection
to RS485 peripherals through standard cables. See section 3.1.2
©2009 EasySync Ltd.
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