Advantech B+B SmartWorx ESU2-100 User manual

USB to Serial Adapter
USER MANUAL
Model: ESU2-100, ESU2-400, QSU2-100 or QSU2-400

USB to Serial Adapter
ii
Advantech B+B SmartWorx - Americas
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Ottawa, IL 61350 USA
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Advantech B+B SmartWorx - European Headquarters
Westlink Commercial Park
Oranmore, Co. Galway, Ireland
Phone [phone]
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www.advantech-bb.com
[e-mail]
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Documentation Number: 710-11483-00_ESU2-x00D_QSU2-x00D_2517m

USB
to Serial Adapter
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Table of Contents
Introduction----------------------------------------------------------------------------------------------------------------------- 3
System Requirements ---------------------------------------------------------------------------------------------------- 3
Features ---------------------------------------------------------------------------------------------------------------------- 4
Multiple Electrical Interface (MEI) ----------------------------------------------------------------------------- 4
Understanding the LEDs------------------------------------------------------------------------------------------- 4
Installing the USB-to-Serial Adapter -------------------------------------------------------------------------------------- 4
Installing under Windows XP ------------------------------------------------------------------------------------------ 4
Installing under Windows 2000 --------------------------------------------------------------------------------------- 9
Uninstalling under Windows 2000 or Windows XP-------------------------------------------------------------13
Making external connections -----------------------------------------------------------------------------------------------14
RS-232 serial connections ----------------------------------------------------------------------------------------------14
RS-422/485 serial connections-----------------------------------------------------------------------------------------15
Testing DB-9 serial ports in HyperTerminal ---------------------------------------------------------------------16
Running Hyperterminal -------------------------------------------------------------------------------------------16
Using Device Manager --------------------------------------------------------------------------------------------------------17
Accessing Device Manager ---------------------------------------------------------------------------------------------17
Exploring Device Manager screens ----------------------------------------------------------------------------------17
Windows XP and 2000 ---------------------------------------------------------------------------------------------17
Setting advanced options -----------------------------------------------------------------------------------------------23
Operating Mode (MEI adapters only)--------------------------------------------------------------------------24
Receiver Active (MEI adapters only)--------------------------------------------------------------------------25
AuxOut/AuxIn (MEI adapters only)----------------------------------------------------------------------------26
Low-Latency Mode -------------------------------------------------------------------------------------------------- 26
Troubleshooting-----------------------------------------------------------------------------------------------------------------27
Appendix A -----------------------------------------------------------------------------------------------------------------------28
Specifications--------------------------------------------------------------------------------------------------------------- 28
Appendix B -----------------------------------------------------------------------------------------------------------------------30
Warranty information --------------------------------------------------------------------------------------------------- 30

USB
to Serial Adapter
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Figures
Figure 1 - Windows XP Found new hardware prompt.............................................................................. 5
Figure 2 - Windows XP Choose your search and installation options prompt ........................................ 6
Figure 3 - Windows XP Searches drivers prompt...................................................................................... 7
Figure 4 - Windows XP Wizard installs the software ............................................................................... 8
Figure 5 - Windows XP Finished installing prompt.................................................................................. 8
Figure 6 - Windows 2000 Found new hardware prompt........................................................................... 9
Figure 7 - Windows 2000 Search for or display drivers prompt ............................................................. 10
Figure 8 - Windows 2000 Locate driver files prompt .............................................................................. 10
Figure 9 - Windows 2000 Finished searching for driver files prompt.................................................... 11
Figure 10 - Windows 2000 Finished installing prompt........................................................................... 12
Figure 11 – Device Manager ..................................................................................................................... 13
Figure 12 - DB-9 connector pinout ........................................................................................................... 14
Figure 13 - Use of DTEs and DCEs in a communication link ................................................................ 14
Figure 14 - Cabling requirements for RS-232 devices............................................................................. 15
Figure 15 - Windows XP/2000 Device Manager properties, General tab.............................................. 18
Figure 16 - Windows XP/2000 RS-232/422/485 Advanced Options dialog window............................... 19
Figure 17 - Windows XP/2000 RS-232 Advanced Options dialog window ............................................. 20
Figure 18 - Windows XP/2000 USB serial port, Port settings box ......................................................... 21
Figure 19 - Windows XP/2000 USB serial port, Advanced settings box ................................................ 21
Figure 20 - Windows XP/2000 USB serial port properties, Driver box.................................................. 22
Figure 21 - Windows XP/2000 USB serial port, Driver file details box ................................................. 23
Tables
Table 1 - Device port and connection options ............................................................................................ 3
Table 2 - LED codes ..................................................................................................................................... 4
Table 3 - RS-232 signals on DB-9 connector ............................................................................................ 14
Table 4 - RS-422/485 signals on DB-9 connector ..................................................................................... 15

USB
to Serial Adapter
3
Introduction
This User’s Manual describes how to setup and install your USB-to-
Serial Adapter.
The QSU2-100 and ESU2-100, respectively, provide four and eight
independent RS-232 serial interfaces to the host PC via the Universal
Serial Bus (USB) port.
The QSU2-400 and ESU2-400, respectively, provide four and eight
independent asynchronous serial interfaces via the USB port. Each of
these interfaces can be used as desired for RS-232, RS-422 or RS-485
communications.
Table 1 - Device port and connection options
Device
Ports
Connection
Device
Ports
Connection
QSU2-100
4
RS-232
QSU2-400
4
RS-232/422/485
ESU2-100
8
RS-232
ESU2-400
8
RS-232/422/485
Each adapter uses high-speed UARTs and deep FIFOs, allowing each
channel to obtain data rates up to 921.6 kbps. The adapters are
powered over their USB connection (bus-powered), eliminating the
need for an external power supply. The adapters are Plug-and-Play
devices and require no hardware configuration.
System Requirements
The USB-to-Serial adapters are supported under the Windows 2000/XP
(and later) and Linux operating systems. One USB port is required to
connect the adapter to your computer. You can use either a built-in
USB port or an add-in USB host adapter. We recommend the use of a
USB 2.0 port for best performance. Contact our sales department for
details on current software offerings.
Note: These products comply
fully with USB Specification
version 2.0. They will also
operate over slower USB 1.1
connections at a slightly
reduced performance level.
Note: The “-400” designation
indicates an “MEI” device.
MEI is an acronym for
“Multiple Electrical Interface.”
The interface is software-
selectable for each serial port.

USB
to Serial Adapter
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Features
Multiple Electrical Interface (MEI)
MEI adapters (model numbers ending with “-400”) are shipped with a
factory default of all serial ports set for RS-232 connections. Each
port can be individually configured for RS-232, RS-422/485 full-
duplex, or RS-422-485 half-duplex operation.
Understanding the LEDs
The LEDs inform you of the configuration of the adapter’s serial
ports. Each serial port has one associated LED located on the back
panel to the right of the port’s DB-9 connector. The following table
lists the possible states of the LEDs and their meaning.
Table 2 - LED codes
LED color Meaning
Red
Port is configured for RS-232.
Green
Port is configured for RS-422/485.
Installing the USB-to-Serial Adapter
This section explains how to install the USB-to-Serial adapter under
different operating systems. Please locate and follow the procedure
for your computer’s operating system.
The USB-to-Serial adapter includes Windows device drivers that
enable the serial ports to appear to Windows as standard COM ports.
Installing under Windows XP
Follow these steps to install the adapter under Windows XP.
Step
Procedure
Description

Step 1
Turn on the power to your computer
system.
This is the system in which the
device
is to
be installed.

Step 2
Plug t
he wide flat end of the USB cable
into the downstream connector.
This is the connector located on the back of
the computer or USB hub.

Step 3
Plug the square end of the USB cable into
the back of the
USB-to-Serial adapter.
Windows tells you that it has f
ound new
hardware and launches the Found New
Hardware Wizard.
Caution! Be sure to allow
the installation process to
finish without interruption.

USB
to Serial Adapter
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Figure 1 - Windows XP Found new hardware prompt
Step
Procedure
Description
Step 4 Insert the installation CD into your CD-
ROM drive.
This is the CD that shipped with the
product.

Step 5
Select the “Advanced” option. Click the
Next button.
The Choose your search and installation
options prompt displays.
Figure 1 illustrates the
Windows XP Found new
hardware prompt. The Found
New Hardware Wizard
launches automatically when
you first plug in the USB-to-
Serial adapter.

USB
to Serial Adapter
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Figure 2 - Windows XP Choose your search and installation options prompt
Step
Procedure
Description
Step 6 Select Search removable media (floppy,
CD-ROM).
If necessary, you can also select the
Include this location in the search:
option and browse to the location with
the USB-to-Serial drivers.
The complete path is E:\Serial Port
Adapters\Drivers\Windows 98, Me,
2000, XP for USB.
Replace E:\ with your CD-ROM
designation
Step 7 Click the Next button. Windows searches for drivers for the
adapter.
Figure 2 illustrates the
Windows XP Choose your
search and installation
prompt.

USB
to Serial Adapter
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Figure 3 - Windows XP Searches drivers prompt
Step
Procedure
Description
Step 8 The Wizard locates and starts to install
the necessary software.
The Wizard installs the software prompt
displays, followed by the Finished
installing prompt.
Figure 3 illustrates the
Windows XP Searches for
drivers prompt. When the
Wizard finds the USB-to-
Serial drivers, this screen
disappears.

USB
to Serial Adapter
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Figure 4 - Windows XP Wizard installs the software
Figure 5 - Windows XP Finished installing prompt
Step
Procedure
Description
Step 11 Press the Finish button to continue. The USB adapter installation is
complete.
Figure 5 shows the Windows
XP Finished installing
prompt. It indicates that the
adapter has been successfully
installed.