Atop SW5501 User manual

SW5501 –SW5502
Wireless Serial Server
User Manual
V 1.4
SW5501 –SW5502
Wireless Serial Server
User Manual
V1.4
April 20th, 2017
Atop Technologies, Inc.

SW5501 –SW5502
Wireless Serial Server
User Manual
V 1.4
This PDF Document contains internal hyperlinks for ease of navigation.
For example, click on any item listed in the Table of Contents to go to that page.
General Description
User Guide
Published by:
Atop Technologies, Inc.
2F, No. 146, Sec. 1, Tung-Hsing Rd,
30261 Chupei City,
Hsinchu County
Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]
[email protected]
www.atoponline.com
www.atop.com.tw

SW5501 –SW5502
Wireless Serial Server
User Manual
V 1.4
Important Announcement
The information contained in this document is the property of Atop Technologies, Inc., and is supplied for the sole
purpose of operation and maintenance of Atop Technologies, Inc., products.
No part of this publication is to be used for any other purposes, and it is not to be reproduced, copied, disclosed,
transmitted, stored in a retrieval system, or translated into any human or computer language, in any form, by any
means, in whole or in part, without the prior explicit written consent of Atop Technologies, Inc.,
Offenders will be held liable for damages and prosecution.
All rights, including rights created by patent grant or registration of a utility model or design, are reserved.
Disclaimer
We have checked the contents of this manual for agreement with the hardware and the software described. Since
deviations cannot be precluded entirely, we cannot guarantee full agreement. However, the data in this manual is
reviewed regularly and any necessary corrections will be included in subsequent editions.
Suggestions for improvement are welcome.
All other product’s names referenced herein are registered trademarks of their respective companies.
Documentation Control
Author:
Saowanee Saewong
Revision:
1.4
Revision History:
Update default password
Creation Date:
23 February 2017
Last Revision Date:
20 April 2017
Product Reference:
SW5501-SW5502
Document Status:
Update default password

SW5501 –SW5502
Wireless Serial Server
User Manual
V 1.4
Table of Contents
1Preface ........................................................................................................................9
1.1 Purpose of the Manual.....................................................................................................................9
1.2 Who Should Use This User Manual.................................................................................................9
1.3 Supported Platform ..........................................................................................................................9
1.4 Warranty Period ...............................................................................................................................9
1.5 Manufacturers Federal Communication Commission Declaration of Conformity Statement...........9
1.6 European Community, Switzerland, Norway, Iceland, and Liechtenstein .....................................10
1.7 UL Notice for Power supplier .........................................................................................................11
2Introduction ...............................................................................................................12
2.1 Product Overview...........................................................................................................................12
2.2 Features .........................................................................................................................................13
3Getting Started ..........................................................................................................14
3.1 Packing List....................................................................................................................................14
3.2 Optional Accessories......................................................................................................................14
3.3 Ordering Information ......................................................................................................................15
3.4 Appearance: front-power-side panels............................................................................................15
3.5 Serial Pin Assignments ..................................................................................................................17
3.5.1 D-Sub9 (DB9).................................................................................................................................17
3.5.2 Terminal Block (TB5)......................................................................................................................18
3.6 First time installation.......................................................................................................................18
3.7 Factory Default Settings.................................................................................................................19
4Configuration and setup ............................................................................................20
4.1 Change basic settings with Device Management Utility ................................................................20
4.2 Advanced configuration via Web Interface ....................................................................................25
4.2.1 Operation Mode..............................................................................................................................27
4.2.2 Overview ........................................................................................................................................30
4.2.3 Wireless Status ..............................................................................................................................31
4.2.4 Site Monitor ....................................................................................................................................31
4.3 Web configuration - Network settings ............................................................................................33
4.4 Web configuration –Wireless Settings ..........................................................................................35
4.4.1 Wireless Profiles.............................................................................................................................35
4.4.2Basic Settings.................................................................................................................................38
4.4.3 Advanced Settings .........................................................................................................................42
4.5 Web configuration –Serial.............................................................................................................44
4.5.1 COM Port Overview .......................................................................................................................44
4.5.2 COM Configuration.........................................................................................................................45
4.5.3 COM Configuration: Advanced Settings.........................................................................................46
4.6 Web configuration - SNMP/Alert Settings......................................................................................49
4.7 Web configuration - E-mail Settings...............................................................................................50
4.8 Web configuration - Log Settings...................................................................................................52
4.8.1 System Log Settings ......................................................................................................................52
4.8.2 COM Log Settings..........................................................................................................................53
4.8.3 Event Log .......................................................................................................................................54
4.8.4 COM DataLog ................................................................................................................................55
4.9 Web configuration –System Setup................................................................................................56
4.9.1 Date/Time Settings.........................................................................................................................56
4.9.2 Admin Settings ...............................................................................................................................57
4.9.3 Firmware upgrade..........................................................................................................................58
4.9.4 Backup/Restore Settings................................................................................................................58

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Wireless Serial Server
User Manual
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4.9.5 Management List............................................................................................................................59
4.9.6 Ping ................................................................................................................................................60
4.10 Web configuration –Reboot and Restore to default Settings........................................................61
5Link modes and Applications.....................................................................................62
5.1 Link Mode Configuration ................................................................................................................62
5.1.1 Link Mode: Configure SW550X as a TCP Server..........................................................................62
5.1.2 Link Mode: Configure SW550X as a TCP Client ...........................................................................66
5.1.3 Link Mode: Configure SW550X in UDP .........................................................................................68
5.2 Link Mode Applications ..................................................................................................................71
5.2.1 TCP Server Application: Enable VirtualCOM...................................................................................71
5.2.2 TCP Server Application: Enable RFC 2217 through Virtual COM.................................................72
5.2.3 TCP Client Application: Enable Virtual COM .................................................................................72
5.2.4 TCP Client Application: Enable RFC 2217 through Virtual COM ..................................................73
5.2.5 TCP Client Application: Configure SW550X as a Pair Connection Master....................................73
5.2.6 TCP Client Application: Configure SW550X as a Pair Connection Slave......................................74
5.2.7 TCP Server Application: Enable Reverse Telnet...........................................................................74
5.2.8 UDP Application: Multi-Point Pair Connection ...............................................................................75
5.2.9 TCP Server Application: Multiple TCP Connections......................................................................77
5.2.10TCP Server Application: Multi-Point TCP Pair Connections..........................................................77
5.3 Wireless Topology..........................................................................................................................78
5.3.1 Configure SW550X as a Wireless Ad-Hoc Peer............................................................................78
5.3.2 Configure SW550X as a Wireless Client in the Infrastructure mode (PSK)...................................80
5.3.3 Click-2-Go ......................................................................................................................................82
5.3.4 Configure SW550X as a Wireless Client in the Infrastructure mode (PEAP-MSCHAPv2)............83
6VCOM installation and troubleshooting .....................................................................84
6.1 Enabling VCOM..............................................................................................................................84
6.1.1 VCOM Driver Setup........................................................................................................................85
6.1.2 Limitation........................................................................................................................................86
6.1.3 Install..............................................................................................................................................86
6.1.4 Uninstall..........................................................................................................................................86
6.2 Enable VCOM in Serial Device Servers and Select VCOM in Windows.......................................87
6.2.1 Enable VCOM in Serial Device Servers.........................................................................................87
6.2.2 Running Serial/IP Software Utility in Windows...............................................................................87
6.2.3 Configuring VCOM ports................................................................................................................89
6.3 Exceptions......................................................................................................................................92
6.4 Using Serial/IP Monitor...................................................................................................................96
6.4.1 Opening the Port Monitor...............................................................................................................96
6.4.2 Activity Panel..................................................................................................................................96
6.4.3 Trace Panel....................................................................................................................................97
6.5 Serial/IP Advanced Settings...........................................................................................................99
6.5.1 Advanced Settings Options ............................................................................................................99
6.5.2 Using Serial/IP with a Proxy Server ..............................................................................................100
7Specifications..........................................................................................................101
7.1 Hardware Specifications ..............................................................................................................101
7.1.1 Models of SW550X Series ............................................................................................................101
7.1.2 Physical Characteristics...............................................................................................................101
7.1.3 LED Indicators ..............................................................................................................................101
7.1.4 Signal LEDs...................................................................................................................................102
7.1.5 Dip Switch (SW5501)....................................................................................................................102
7.1.6 Dip Switch (SW5502)....................................................................................................................102
7.1.7 Wireless Specifications ................................................................................................................103
7.1.8 Frequency Range:.........................................................................................................................103
7.1.9 Data Rate:.....................................................................................................................................103

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Wireless Serial Server
User Manual
V 1.4
7.1.10Output Power................................................................................................................................104
7.1.11Receiver Sensitivity.......................................................................................................................104
7.1.12Security.........................................................................................................................................106
7.1.13Regulatory Requirements .............................................................................................................106
7.1.14Environmental Limits....................................................................................................................107
7.1.15Other.............................................................................................................................................107
7.2 Software Specifications................................................................................................................107
8Emergency System Recovery...................................................................................108
9Warranty ..................................................................................................................109
Table of Figures
Figure 2.1 An Application of Wireless Serial Device Server in WLAN....................................................................12
Figure 3.1 Front Panel of SW5501..........................................................................................................................15
Figure 3.2 Front Panel of SW5502..........................................................................................................................15
Figure 3.3 Front Panel of SW5501-TB/Sis..............................................................................................................16
Figure 3.4 Front Panel of SW5502-TB/Sis..............................................................................................................16
Figure 3.5 Power Panel of all SW550X Series .......................................................................................................16
Figure 3.6 Rear view of SW550X Series.................................................................................................................17
Figure 3.7 Din-Rail Mount of SW550X....................................................................................................................17
Figure 4.1 User Interface of Device Management© lists a SW550X device in wireless client mode.....................20
Figure 4.2 Administrator Login................................................................................................................................21
Figure 4.3 Notification in case that the SW550X device is in different subnetwork from your PC..........................21
Figure 4.4 Pop-up window indicates a successful login .........................................................................................21
Figure 4.5 Mark of login device in the Caution column ...........................................................................................22
Figure 4.6 Notification of unsuccessful login when the interface is either down or unreachable...........................22
Figure 4.7 Pull-down Menu of Configuration and Network….................................................................................23
Figure 4.8 Pop-up Windows of Network Setting......................................................................................................23
Figure 4.9 Authorization for Change.......................................................................................................................24
Figure 4.10 Waiting Notification for Restarting Device ...........................................................................................24
Figure 4.11 Authentication Pop-up Windows..........................................................................................................25
Figure 4.12 User Interface of Web Configuration ....................................................................................................26
Figure 4.13 Menu-tree of All Available Modes and Options of SW550X Series .......................................................26
Figure 4.14 Configuration Page of Operation Mode with Wireless Client Setting ....................................................27
Figure 4.15 Waiting Message ..................................................................................................................................28
Figure 4.16 Completion of the settings and counting down for a page reload ......................................................28
Figure 4.17 AP Client Operation Mode Setting ........................................................................................................29
Figure 4.18 Overview Information Page of an SW550X Device.............................................................................30
Figure 4.19 Wireless Status page shows current information of SW550X.............................................................31
Figure 4.20 Transition page during the gathering of surrounding wireless network information............................32
Figure 4.21 Results of a Site Monitoring of SW550X Series..................................................................................32
Figure 4.22 Network Settings Page (Wireless Client Mode)...................................................................................33
Figure 4.23 Network Settings Page for Bridged Interface (AP Client Mode)...........................................................34
Figure 4.24 Enabling Wireless Profile Option to Add New Access Point.................................................................35
Figure 4.25 Basic Setting List Webpage after Clicking Add Button.........................................................................36
Figure 4.26 Wireless Profile Page ...........................................................................................................................37
Figure 4.27 Basic Settings for Wireless Connection when Wireless Profile is Enabled ..........................................38

SW5501 –SW5502
Wireless Serial Server
User Manual
Preface
Figure 4.28 Basic Settings for Wireless Connection when Wireless Profile is Disabled........................................39
Figure 4.29 Results of network scanning when uses “scan network” buttons........................................................41
Figure 4.30 Result when there is no wireless network available in the area..........................................................41
Figure 4.31 Wireless Advanced Settings Page when Wireless Profile is Disabled and Topology is set to
infrastucture..............................................................................................................................................................42
Figure 4.32 Wireless Advanced Settings Page when Wireless Profile is Enabled................................................43
Figure 4.33 COM 1 Port Setting Page ...................................................................................................................44
Figure 4.34 Serial Settings Part of COM Port........................................................................................................45
Figure 4.35 Advanced COM Port Settings Page ...................................................................................................46
Figure 4.36 SNMP/Alert Settings Page..................................................................................................................49
Figure 4.37 E-mail Settings Page ..........................................................................................................................51
Figure 4.38 Sending Test E-mail Failed ..................................................................................................................51
Figure 4.39 System Log Settings Page..................................................................................................................52
Figure 4.40 COM Log Settings Page.....................................................................................................................53
Figure 4.41 Event Log Page ..................................................................................................................................54
Figure 4.42 COM Datalog Page.............................................................................................................................55
Figure 4.43 Date/Time Settings Page....................................................................................................................56
Figure 4.44 Admin Settings Page ..........................................................................................................................57
Figure 4.45 Firmware Upgrade Page.....................................................................................................................58
Figure 4.46 Backup/Restore Setting Page.............................................................................................................59
Figure 4.47 Management List Page.......................................................................................................................59
Figure 4.48 Successful Ping with No Packet Loss.................................................................................................60
Figure 4.49 Unsuccessful Ping with 100% Packet Loss........................................................................................60
Figure 4.50 Reboot Page.......................................................................................................................................61
Figure 4.51 Pop-up Windows while Rebooting SW550X with Reloading Countdown in Seconds .........................61
Figure 5.1 Link Mode Options for COM 1 Port.......................................................................................................62
Figure 5.2 An Example of TCP Server Link Mode.................................................................................................62
Figure 5.3 Connection Settings for TCP Server Link Mode...................................................................................63
Figure 5.4 TCP Server Link Mode Settings under COM 1 Page ...........................................................................64
Figure 5.5 An Example of TCP Client Link Mode ..................................................................................................66
Figure 5.6 Connection Settings for TCP Client Link Mode ....................................................................................66
Figure 5.7 TCP Client Link Mode Settings under COM 1 Page.............................................................................67
Figure 5.8 An Example of UDP Link Mode ............................................................................................................68
Figure 5.9 Connection Setting for UDP Link Mode................................................................................................69
Figure 5.10 UDP Link Mode Settings under COM 1 Page.....................................................................................69
Figure 5.11 Virtual COM Application in TCP Server Link Mode ............................................................................71
Figure 5.12 Virtual COM Application in TCP Client Link Mode..............................................................................72
Figure 5.13 Pair Connection Master Application in TCP Server Link Mode.........................................................73
Figure 5.14 Pair Connection Slave Application in TCP Client Link Mode.............................................................74
Figure 5.15 Reverse Telnet Application in TCP Server Link Mode ......................................................................75
Figure 5.16 An Example of Network Topology for Multi-Point Pair Connection in UDP Link Mode.....................76
Figure 5.17 Setting of Multiple TCP Connection Application via Maximum Connection Option...........................77
Figure 5.18 An Example of Network Topology for Multi-Point Pair Connection in TCP Link Mode......................78
Figure 5.19 Wireless Ad-Hoc Peer Settings for SW550X....................................................................................79
Figure 5.20 Wireless Client with WPA2-PSK Security Settings for SW550X......................................................81
Figure 5.21 Wireless Client with PEAP Security Settings for SW550X ...............................................................83
Figure 6.1 Enabled Virtual COM Application in TCP Server Link Mode.................................................................84
Figure 6.2 Enabled Virtual COM Application in TCP Client Link Mode..................................................................84
Figure 6.3 An Example Diagram of Virtual COM Application over TCP/IP Network ...........................................85
Figure 6.4 Enable Virtual COM Application for COM 2 in TCP Server Link Mode ..............................................87
Figure 6.5 Serial/IP Tray Icon on Windows Notification Area ...............................................................................88
Figure 6.6 A Pop-up Window for Selecting Virtual COM Ports...........................................................................88
Figure 6.7 Serial/IP Control Panel Window ...........................................................................................................89
Figure 6.8 Configuring Virtual COM 2 Port as TCP Client...................................................................................90
Figure 6.9 Configuration Wizard Window for COM 1...........................................................................................91
Figure 6.10 Timeout Warning on VCOM Connection ..........................................................................................92

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Wireless Serial Server
User Manual
Preface
Figure 6.11 Error of Client not licensed for this server.........................................................................................93
Figure 6.12 Licensing Issue of Serial/IP Utility Software .....................................................................................93
Figure 6.13 VCOM Authentication failed due to Missing Username/Password...................................................94
Figure 6.14 VCOM Authentication failed due to incorrect Username and/or Password......................................94
Figure 6.15 VCOM Authentication failed due to disabled VCOM Authentication on SW550X............................95
Figure 6.16 Activity Panel of Serial/IP Port Monitor.............................................................................................96
Figure 6.17 Trace Panel of Serial/IP Port Monitor...............................................................................................97
Figure 6.18 Serial/IP Advanced Settings Window ...............................................................................................99
Figure 6.18 Proxy Server Tab under Serial/IP Advanced Settings....................................................................100
List of Tables
Table 3.1 Packing List..............................................................................................................................................14
Table 3.2 Optional Accessories ...............................................................................................................................14
Table 3.3 Device Ordering Information....................................................................................................................15
Table 3.4 Factory Default Network Settings ............................................................................................................19
Table 3.5 SW550X Series Factory Default Settings ................................................................................................19
Table 4.1 Common Buttons in Web Configuration Menu........................................................................................27
Table 4.2 Default Settings in Infrastructure Mode:..................................................................................................38
Table 4.3 Default Settings in Ad Hoc Mode:............................................................................................................38
Table 5.1 An Example of Multi-Point Pair Connection’s Parameter Settings for UDP Link Mode...........................76
Table 5.2 An Example of Multi-Point Pair Connection’s Parameter Settings for TCP Link Mode..........................77
Table 5.3 Summary of Parameter Settings for Wireless Ad-Hoc Peer with WEP Security....................................79
Table 5.4 Summary of Parameter Settings for Wireless Client in Infrastructure Topology with WPA2-PSK
Security ....................................................................................................................................................................82
Table 5.5 Wireless Client-Infrastructure Topology Parameters with WPA2 (PEAP-MSCHAPv2) Security............83
Table 5.5 SW550X series and their interfaces......................................................................................................101
Table 5.5 Physical Characteristics of SW550X Series .........................................................................................101
Table 5.5 Descriptions of LED Status Indicators ..................................................................................................101
Table 5.5 Interpretation of SW550X’s Operation via Front Panel LEDs...............................................................102
Table 5.5 Dip Switch Functions of SW5501..........................................................................................................102
Table 5.5 Dip Switch Function of SW5502 ...........................................................................................................102
Table 5.5 Wireless Interface Specification of SW550X Series ............................................................................103
Table 5.5 Operating Frequencies in Different Regions at 2.4GHz and 5GHz......................................................103
Table 5.5 Supported Data Rate for Wireless Interface under IEEE 802.11 Standards........................................103
Table 5.5 Maximum Output Power of Wireless Interface under IEEE 802.11Standards .....................................104
Table 5.5 Receiver Sensitivity of Wireless Interface under IEEE 802.11 Standards............................................104
Table 5.5 Conformed Radio Frequency and Electromagnetic Standards ............................................................106
Table 5.5 Conformed Electrical Standards ...........................................................................................................106
Table 5.5 Software Specifications.........................................................................................................................107

SW5501 –SW5502
Wireless Serial Server
User Manual
Preface
1 Preface
1.1 Purpose of the Manual
This manual supports you during the installation and configuring of Device Management Utility©, as well as it
explains some technical options available with the mentioned product. As such, it contains some advanced network
management knowledge, instructions, examples, guidelines and general theories designed to help users manage
this device and its corresponding software. A background in general theory is necessary when reading it. Please
refer to the Glossary for technical terms and abbreviations (if any).
1.2 Who Should Use This User Manual
This manual is to be used by qualified network personnel or support technicians who are familiar with network
operations.It might be useful for system programmers or network planners as well. This manual also provides
helpful and handy information for first time users. For any related problems, please contact your local distributor.
If they are unable to assist you, please redirect your inquiries to www.atop.com.tw or www.atoponline.com.
1.3 Supported Platform
This manual is designed for the SW550X Industrial Wireless Serial Device Server Series and that model only.
1.4 Warranty Period
Atop provides a 5-year limited warranty for SW550X Industrial Wireless Serial Device Server Series.
1.5 Manufacturers Federal Communication Commission Declaration of Conformity
Statement
Model: SW550X Industrial Wireless Serial Device Server Series
NOTE: This equipment has been tested and found to comply with the limits for a Class A 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 off and on, the user is encouraged to try to correct the interference by one of the following measures:
Reorient or relocate the receiving antenna.

SW5501 –SW5502
Wireless Serial Server
User Manual
Preface
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired
operation.
This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or
transmitter except in accordance with FCC multi-transmitter product procedures.
FCC Caution:Any changes or modifications not expressly approved by the party responsible for compliance could
void the user's authority to operate this equipment. For product available in the USA/Canada market, only channel
1~11 can be operated. Selection of other channels is not possible.
※
This device is restricted to indoor use when operated in the 5.15 to 5.25 GHz frequency range use.
FCC requires this product to be used indoors for the frequency range 5.15 to 5.25 GHz to reduce
the potential for harmful interference to co-channel mobile satellite systems.
FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm
between the radiator and human body.
1.6 European Community, Switzerland, Norway, Iceland, and Liechtenstein
Model: SW550X Industrial Wireless Serial Device Server Series
Declaration of Conformity with regard to the R&TTE Directive 2014/53/EC
This equipment is in compliance with the essential requirements and other relevant provisions of 2014/53/EC.
The following standards were applied:
EMC : EN 301 489-1 v1.9.2 (2011-09), EN 301 489-17 v2.2.1 (2012-09)
Radio : 47 CFR FCC Part 15 Subpart C § 15.247, 47 CFR FCC Part 15 Subpart E § 15.407
EN300 328 v1.8.1 (2012-06), EN301.893 v1.7.1 (2012-06)
EMF: 47 CFR FCC Pat 2 Subpart J, section 2.1091, EN 62311:2008 and EN50385:2002
Health & Safety: EN60950-1: 2001; EN 50385: 2002
The conformity assessment procedure referred to in Article 10.4 and Annex III of Directive 2014/53/EC has been
followed.
Note : This equipment is intended to be used in all EU and EFTA countries. Outdoor use may be restricted to certain
frequencies and/or may require a license for operation. For more details, contact Atop Technologies, Inc.

SW5501 –SW5502
Wireless Serial Server
User Manual
Preface
European Union
This system has been evaluated for RF exposure for Humans in reference to the ICNIRP (International Commission
on Non-Ionizing Radiation Protection) limits. The evaluation was based on the EN 50385 Product Standard to
Demonstrate Compliance of Radio Base Stations and Fixed Terminals for Wireless Telecommunications Systems
with basic restrictions or reference levels related to Human Exposure to Radio Frequency Electromagnetic Fields
from 300 MHz to 40 GHz. The minimum separation distance from the antenna to general bystander is 20cm (7.9
inches).
1.7 UL Notice for Power supplier
The SW550X Series products are intended to be supplied by a listed power unit marked with “LPS” (Limited Power
Source), or “Class 2” and output rate of 9~48 VDC, 1.0 Ampere minimum, or use the recommended power supply
listed in Table 3.2 Optional Accessories.

SW5501 –SW5502
Wireless Serial Server
User Manual
Introduction
2 Introduction
2.1 Product Overview
The SW550X Industrial Wireless Serial Device Server is designed to provide wireless connectivity to clients and
serial devices, thus creating a complete solution for your industrial wireless networking. The SW550X series can
be operated as a wireless client with the ability to connect serial device to Wireless Local Area Network (WLAN) or
Local Area Network (LAN) and as AP client to bridge between WLAN and LAN.
The SW550X Series support IEEE 802.11a/b/g/n wireless connectivity standards, which can be operated in both
2.4GHz and 5GHz bands. It acts as a server for serial devices that are connected to its ports in order to transparently
connect to other devices in the wireless network or can be reached by other wireless devices. Supported interfaces
of serial devices include RS-232, RS-422, and RS-485.
As an example, user can connect serial devices to a Wireless Serial Device Server (SW550X) and control them
through Wireless Networking Device such as Wireless Access Point (AW5500) in wireless local area network
(WLAN). An example in Figure 1.1 illustrates how to connect serial devices to a wireless local area network or a
backbone network. The SW550X Industrial Wireless Serial Device Server provides several functionalities to support
mobile and wireless networking.
Figure 2.1 An Application of Wireless Serial Device Server in WLAN

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Wireless Serial Server
User Manual
Introduction
2.2 Features
SW550X Series’ small size but powerful architecture makes it a perfect choice for industrial/manufacturing needs
in which size is a decisive factor. It rewards our customers with superb connectivity withstanding all the harshness
in your environment of choice.
The key characteristics of SW550X are:
Support of the most popular wireless local area network standards IEEE 802.11a/b/g/n
Support of 5 GHz Industrial, Scientific and Medical (ISM) band operating frequency to reduce interference in
2.4 GHz ISM band with other wireless devices
Certified wireless equipment by FCC (United States), ETSI (Europe), and NCC (Taiwan)
Dual antennas offer better wireless coverage and reduce wireless blind spots
Embedded PCB coating protection
Easy configuration through embedded web server interface or Atop’s Windows®-based configuration utility
program called Device Management®
Firmware upgradable through embedded web server interface or Atop’s Device Management®
Caution
From here on, extreme caution must be exercised.
Never install or work on electrical or cabling during periods of lightning activity. Never connect or
disconnect power when hazardous gases are present.
WARNING:Disconnect the power and allow unit to cool for 5 minutes before touching.

SW5501 –SW5502
Wireless Serial Server
User Manual
Getting Started
3 Getting Started
3.1 Packing List
Inside the purchased package, you will find the following items:
Table 3.1 Packing List
Item
Quantity
Description
SW550X Series
1
Industrial Wireless Serial Device Server
Antenna
2
3~5 dBi antenna
Terminal Block
3-pin 5.08mm Lockable Terminal Block (TB3) 1
5-pin 5.08mm Lockable Terminal Block (TB5) 1
(SW5501-TB/SW5501-Sis only)
5-pin 5.08mm Lockable Terminal Block (TB5) 2
(SW5502-TB/SW5502-Sis only)
Documentation
1
Hardware Installation Guide (Warranty Card is included)
Mounting Kit
1
DIN-Rail Kit (Already mounted on the device)
Note:Please notify your sales representative if any of the above items is missing or damaged in any form upon delivery. If your sales
representative is unable to satisfy your enquiries, please contact us directly.
3.2 Optional Accessories
The following table lists optional accessories for SW550X series.
Table 3.2 Optional Accessories
Item
Description
UN315-1212(US-LDC)
Y-Type (5.08mm) power adapter, 100-240VAC input, 1.25A @ 12VDC output, US plug
UNE315-1212(EU-LDC)
Y-Type (5.08mm) power adapter, 100-240VAC input, 1.25A @ 12VDC output, EU plug
ADP-DB9(F)-TB5
Female DB9 to Female 3.81 TB5 Converter
WMK-454-Black
Black Aluminum Wall Mount Kit

SW5501 –SW5502
Wireless Serial Server
User Manual
Getting Started
3.3 Ordering Information
Please refer to the following product codes to place an order.
Table 3.3 Device Ordering Information
Model Name
P/N
Description
SW5501
1P1SW550100001G
1-port Industrial Wireless Serial Device Server, DB9
SW5501-TB
1P1SW5501TB001G
1-port Industrial Wireless Serial Device Server, TB5
SW5501-Sis
1P1SW5501SIS01G
1-port Industrial Wireless Serial Device Server, TB5 with serial isolation
SW5502
1P1SW550200001G
2-port Industrial Wireless Serial Device Server, DB9
SW5502-TB
1P1SW5502TB001G
2-port Industrial Wireless Serial Device Server, TB5
SW5502-Sis
1P1SW5502SIS01G
2-port Industrial Wireless Serial Device Server, TB5 with serial isolation
3.4 Appearance: front-power-side panels
The front panels of different models of SW550X series are shown in the following figures. Note that the power
panel and the rear panel are the same for all models.Note that the detailed description of LEDs and DIP switch on
the front panel can be found in Chapter 7.1 below.
`
Figure 3.1 Front Panel of SW5501
Figure 3.2 Front Panel of SW5502

SW5501 –SW5502
Wireless Serial Server
User Manual
Getting Started
Figure 3.3 Front Panel of SW5501-TB/Sis
Figure 3.4 Front Panel of SW5502-TB/Sis
Figure 3.5 Power Panel of all SW550X Series
Note:The blue DIP switch on the front panel of SW550X can be used to adjust different values for pull-high or pull-
low termination resistors on the RS-485 COM ports. If the RS-485 network range is shorter than 100 meters, the
termination resistors are not required (by setting the DIP switch to termination off). Otherwise, it may be necessary
to insert termination resistors (by setting the DIP switch to termination on)at both ends of RS-485 network to
improve signal quality. Table 7.5and Table 7.6summarize the functionalities of the DIP switches for COM1 and
COM2 on their SW550X series.
The rear panel (where you can mount the device on a rail or to the wall) is shown in figure below, together with a
simple mounting instruction.

SW5501 –SW5502
Wireless Serial Server
User Manual
Getting Started
Figure 3.6 Rear view of SW550X Series
Figure 3.7 Din-Rail Mount of SW550X
3.5 Serial Pin Assignments
3.5.1 D-Sub9 (DB9)
Pin#
RS-232
Full Duplex
RS-422/4-Wire RS-485
Full Duplex
2-Wire RS-485
Half Duplex
1
DCD
N/A
N/A
2
RXD
TXD+
N/A (reserved)
3
TXD
RXD+
DATA+
4
DTR
N/A
N/A
5
SG (Signal Ground)
SG (Signal Ground)
SG (Signal Ground)
6
DSR
N/A
N/A
7
RTS
RXD-
DATA-
8
CTS
TXD-
N/A (reserved)
9
RI
N/A
N/A

SW5501 –SW5502
Wireless Serial Server
User Manual
Getting Started
3.5.2 Terminal Block (TB5)
Pin#
RS-232
Full Duplex
4-W RS-422/RS-485
Full Duplex
2-W RS-485
Half Duplex
1
SG
SG
SG
2
RTS
R-
DATA-
3
TxD
R+
DATA+
4
CTS
T-
N/A
5
RxD
T+
N/A
3.6 First time installation
Before installing the device, please adhere to all safety procedures described below, Atop will not be held liable
for any damages to property or personal injuries resulting from the installation or overall use of the device. Do not
attempt to manipulate the product in any way if unsure of the steps described here1, in such cases please
contact your dealer immediately.
1. Prepare the necessary cables, DC adapter, power cord, LAN cable, serial cable, etc; do not connect the unit
yet.
2. Install both antennas to the SMA connectors (gold connectors) in the front panel of SW550X device. Note
that the antenna’s connectors are female reverse-polarity (RP) SMA type. The gains of the antennas are
3dBi at 2.4GHz and 5dBi at 5GHz. Once installed the device to a rail or your desired location, do not put
them parallel otherwise their signal will interfere with each other. Please see the recommended antennas
setup for SW550X in the Hardware Installation Guide.
3. Plug the power source to the unit, starting from the ground (It is a screw close to the power terminal block.)
and then the 3-Pin power terminal block on the power panel in Figure 3.5. A recommended power adapter
(such as US315-1212 power adapter listed in Table 3.2) with 3-Pin terminal block can be connected to the
power terminal block.You will hear a long beep with all LEDs turn on and after a few second you will hear
a shot beep twice and the RUN LED will start blinking slowly. If the device’s wireless interface is working
properly, the WLAN LED will also turn on and start blinking once in a while. Device’s STATUS LEDs will also
start running too from bottom LED to the top LED.
4. Note that although internal grounding has been done inside, in order to ensure overall maximum
performance and protection of your device it is strongly advised to properly connect the grounding. Please
choose only one of the grounding connections either connecting the ground to the screw on the power
panel or to the Frame Ground (F.G.) pin of the 3-Pin terminal block.
5. Place the device in the desired location, which is dry and free from dirt or corrosive vapors, and connect it
to a LAN via an Ethernet cable with an RJ45 connector.
6. Connect your computer to the LAN network. Default configurations will be addressed later in Chapter 3.7
below.
Note1: Please consult your Hardware Installation Guide (leaflet available in your package) for more information when attempting an
installation. Also, please follow all safety procedures when doing so.

SW5501 –SW5502
Wireless Serial Server
User Manual
Getting Started
3.7 Factory Default Settings
Upon arrival, the device is set with factory default settings. The SW550X Series comes with two different IP
addresses for LAN and WLAN as shown below.
Table 3.4 Factory Default Network Settings
Interface
Device IP
Subnet mask
Gateway IP
DNS1
LAN
10.0.50.100
255.255.0.0
10.0.0.254
168.95.1.1
WLAN
192.168.1.1
255.255.255.0
192.168.1.254
Other relevant factory default settings are summarized below.
Table 3.5 SW550X Series Factory Default Settings
Parameter
Default Values
Security
User Name
admin
Password
default
Serial
COM1
RS-232 (RS-422 for Sis models), 9600 bps, 8 data bits, No Parity bit, 1
stop bit, No Flow Control
Packet Delimiter timer: Auto
COM2
SNMP
SysName of SNMP
0060E9XXXXXX
SysLocation of SNMP
Location
SysContact of SNMP
Contact
SNMP
Disabled
Read Community
public
Write Community
private
SNMP Trap Server
0.0.0.0
Note:you can press the “Reset” button on the front panel for 5 seconds to restore the SW550X Series to the
factory default settings.

SW5501 –SW5502
Wireless Serial Server
User Manual
Configuration and
setup
4 Configuration and setup
4.1 Change basic settings with Device Management Utility
Note: Advanced settings are not possible via Device Management Utility. This can be used to locate, access, modify
network parameters, change login credentials or update firmware. For device-specific settings, please use Web
Interface, as described in Chapter 4.2 below.
First, please install our configuration utility program called Device Management Utility (formerly Serial Manager)
that comes with the Product CD or can be downloaded from our websites (www.atop.com.tw or
www.atoponline.com).
For more information on how to install Device Management Utility, please refer to the manual that comes in the
Product CD or that is available online.After you start the utility, SW550X Industrial Wireless Serial Device Server
will be automatically detected if this is already connected to the same subnet as your PC and will be listed on the
Device Management Utility’s window.
Alternatively, if you did not see your SW550X device on your network, press “Rescan” icon (first icon on the icon
bar). A list of devices including your SW550X device currently connected to the network will be shown in the window
of Device Management© as shown in the Figure below.
Important information about the SW550X device such as the IP address, MAC address, etc are going to be displayed
as well.Note that a simple way to configure a new SW550X device is to set a static IP for your personal computer
to the same subnet (i.e. 10.0.50.XXX)as the default IP address of the LAN connection (i.e. 10.0.50.100).
Note: in the Figure below the SW5502 device appears with two lines because it has been set to operate in wireless
client mode as two different IP addresses and MAC addresses are available. If, otherwise, SW5502 is set to operate
in AP client mode, it will show up on the Device Management with only one IP address and MAC address.Details
of operation modes will be presented in Section 4.4 below.
Figure 4.1 User Interface of Device Management© lists a SW550X device in wireless client mode.
After selecting and then double-clicking the device’s name on the list (such as SW5502 with IP address
10.0.50.100), a window will pop-up and prompt you to enter username and password.