Atop SW5502C User manual

SW5502C
Wireless Serial Server
User Manual
V 1.2
SW5501C SW5502C
Wireless Serial Server
User Manual
V1.2
April 20th, 2017
Atop Technologies, Inc.

SW5502C
Wireless Serial Server
User Manual
V 1.2
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.
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

SW5502C
Wireless Serial Server
User Manual
V 1.2
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:
1.2
Revision History:
Update
Creation Date:
11 April 2017
Last Revision Date:
20 April 2017
Product Reference:
SW5501C, SW5502C
Document Status:
Including new firmware features, new password

SW5502C
Wireless Serial Server
User Manual
V 1.2
Table of Contents
1Preface .............................................................................................................................. 10
1.1 Purpose of the Manual........................................................................................................................ 10
1.2 Who Should Use This User Manual .................................................................................................... 10
1.3 Supported Platform ............................................................................................................................. 10
1.4 Warranty Period ................................................................................................................................... 10
1.5 Manufacturers Federal Communication Comm. Declaration of Conformity Statement ................ 10
1.6 European Community, Switzerland, Norway, Iceland, and Liechtenstein ........................................ 11
1.7 UL Notice for Power supplier.............................................................................................................. 12
2Introduction....................................................................................................................... 13
2.1 Product Overview ................................................................................................................................ 13
2.2 Features ............................................................................................................................................... 14
3Getting Started.................................................................................................................. 15
3.1 Packing List ......................................................................................................................................... 15
3.2 Optional Accessories .......................................................................................................................... 15
3.3 Ordering Information........................................................................................................................... 16
3.4 Appearance: front-power-side panels ................................................................................................ 16
3.5 Serial Pin Assignments ....................................................................................................................... 18
3.5.1 D-Sub9 (DB9) ....................................................................................................................................... 18
3.5.2 Terminal Block (TB5) .......................................................................................................................... 18
3.6 First time installation........................................................................................................................... 18
3.7 Factory Default Settings...................................................................................................................... 20
4Configuration and setup .................................................................................................. 21
4.1 Change basic settings with Device Management Utility................................................................... 21
4.2 Advanced configuration via Web Interface........................................................................................ 26
4.2.1 Operation Mode................................................................................................................................... 28
4.2.2 Overview............................................................................................................................................... 31
4.2.3 Wireless Status.................................................................................................................................... 32
4.2.4 Site Monitor ......................................................................................................................................... 32
4.3 Web configuration - Network settings................................................................................................ 34
4.4 Web configuration –Wireless Settings.............................................................................................. 36
4.4.1 Wireless Profiles.................................................................................................................................. 36
4.4.2 Basic Settings ...................................................................................................................................... 39
4.4.3 Advanced Settings .............................................................................................................................. 43
4.5 Web configuration –Serial ................................................................................................................. 45
4.5.1 COM Port Overview ............................................................................................................................. 45
4.5.2 COM Configuration.............................................................................................................................. 46
4.5.3 COM Configuration: Advanced Settings ............................................................................................ 47
4.6 Web configuration - SNMP/Alert Settings ......................................................................................... 50
4.7 Web configuration - E-mail Settings ................................................................................................... 51
4.8 Web configuration - Log Settings ....................................................................................................... 53
4.8.1 System Log Settings ........................................................................................................................... 53
4.8.2 COM Log Settings................................................................................................................................ 54
4.8.3 Event Log ............................................................................................................................................. 55

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Wireless Serial Server
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4.8.4 COM DataLog ...................................................................................................................................... 56
4.9 Web configuration –System Setup.................................................................................................... 57
4.9.1 Date/Time Settings ............................................................................................................................. 57
4.9.2 Admin Settings .................................................................................................................................... 58
4.9.3 Firmware upgrade ............................................................................................................................... 59
4.9.4 Backup/Restore Settings .................................................................................................................... 59
4.9.5 Management List................................................................................................................................. 60
4.9.6 Ping ...................................................................................................................................................... 61
4.10 Web configuration –Reboot and Restore to default Settings.......................................................... 62
5Link modes and Applications .......................................................................................... 64
5.1 Link Mode Configuration..................................................................................................................... 64
5.1.1 Link Mode: Configure SW550XC as a TCP Server............................................................................. 64
5.1.2 Link Mode: Configure SW550XC as a TCP Client.............................................................................. 68
5.1.3 Link Mode: Configure SW550XC in UDP ............................................................................................ 70
5.2 Link Mode Applications....................................................................................................................... 72
5.2.1 TCP Server Application: Enable VirtualCOM...................................................................................... 72
5.2.2 TCP Server Application: Enable RFC 2217 through Virtual COM...................................................... 73
5.2.3 TCP Client Application: Enable Virtual COM ...................................................................................... 73
5.2.4 TCP Client Application: Enable RFC 2217 through Virtual COM....................................................... 74
5.2.5 TCP Client Application: Configure SW550XC as a Pair Connection Master.................................... 74
5.2.6 TCP Client Application: Configure SW550XC as a Pair Connection Slave....................................... 76
5.2.7 TCP Server Application: Enable Reverse Telnet ................................................................................ 76
5.2.8 UDP Application: Multi-Point Pair Connection................................................................................... 77
5.2.9 TCP Server Application: Multiple TCP Connections.......................................................................... 79
5.2.10TCP Server Application: Multi-Point TCP Pair Connections ............................................................. 79
5.3 Wireless Topology............................................................................................................................... 80
5.3.1 Configure SW550XC as a Wireless Ad-Hoc Peer .............................................................................. 80
5.3.2 Configure SW550XC as a Wireless Client in the Infrastructure mode (PSK)................................... 82
5.3.3 Click-2-Go............................................................................................................................................. 84
5.3.4 Configure SW550XC as a Wireless Client in the Infrastructure mode (PEAP-MSCHAPv2)............ 85
5.3.5 P2P Button (External Physical WPS button)...................................................................................... 86
6VCOM installation and troubleshooting.......................................................................... 90
6.1 Enabling VCOM.................................................................................................................................... 90
6.1.1 VCOM Driver Setup.............................................................................................................................. 91
6.1.2 Limitation ............................................................................................................................................. 92
6.1.3 Install.................................................................................................................................................... 92
6.1.4 Uninstall ............................................................................................................................................... 92
6.2 Enable VCOM in Serial Device Servers and Select VCOM in Windows ............................................ 93
6.2.1 Enable VCOM in Serial Device Servers............................................................................................... 93
6.2.2 Running Serial/IP Software Utility in Windows .................................................................................. 93
6.2.3 Configuring VCOM ports ..................................................................................................................... 95
6.3 Exceptions ........................................................................................................................................... 98
6.4 Using Serial/IP Monitor..................................................................................................................... 102
6.4.1 Opening the Port Monitor.................................................................................................................. 102
6.4.2 Activity Panel ..................................................................................................................................... 102
6.4.3 Trace Panel ........................................................................................................................................ 103
6.5 Serial/IP Advanced Settings ............................................................................................................. 105
6.5.1 Advanced Settings Options .............................................................................................................. 105
6.5.2 Using Serial/IP with a Proxy Server .................................................................................................. 106

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Wireless Serial Server
User Manual
V 1.2
7Specifications ................................................................................................................. 107
7.1 Hardware Specifications................................................................................................................... 107
7.1.1 Models of SW550XC Series .............................................................................................................. 107
7.1.2 Physical Characteristics ................................................................................................................... 107
7.1.3 LED Indicators ................................................................................................................................... 107
7.1.4 Signal LEDs ........................................................................................................................................ 108
7.1.5 Dip Switch (SW5501)........................................................................................................................ 108
7.1.6 Dip Switch (SW5502)......................................................................................................................... 108
7.1.7 Wireless Specifications..................................................................................................................... 109
7.1.8 Frequency Range:.............................................................................................................................. 109
7.1.9 Data Rate:.......................................................................................................................................... 109
7.1.10Output Power ..................................................................................................................................... 110
7.1.11Receiver Sensitivity ........................................................................................................................... 110
7.1.12Security .............................................................................................................................................. 111
7.1.13Regulatory Requirements.................................................................................................................. 111
7.1.14Environmental Limits ........................................................................................................................ 112
7.1.15Other................................................................................................................................................... 112
7.2 Software Specifications .................................................................................................................... 113
8Emergency System Recovery ........................................................................................ 114
9Warranty .......................................................................................................................... 115
Table of Figures
Figure 2.1 An Application of Wireless Serial Device Server in WLAN ........................................................................ 13
Figure 3.1 Panel of SW5501C....................................................................................................................................... 16
Figure 3.2 Panel of SW5502C Figure 3.3 Panel of SW5502C-TB.............................................................. 16
Figure 4.1 User Interface of Device Management© lists a SW550XC device in wireless client mode.................... 21
Figure 4.2 Administrator Login..................................................................................................................................... 22
Figure 4.3 Notification in case that the SW550XC device is in different subnetwork from your PC ....................... 22
Figure 4.4 Pop-up window indicates a successful login ............................................................................................ 22
Figure 4.5 Mark of login device in the Caution column............................................................................................... 23
Figure 4.6 Notification of unsuccessful login when the interface is either down or unreachable........................... 23
Figure 4.7 Pull-down Menu of Configuration and Network ....................................................................................... 23
Figure 4.8 Pop-up Windows of Network Setting ......................................................................................................... 24
Figure 4.9 Authorization for Change ........................................................................................................................... 24
Figure 4.10 Waiting Notification for Restarting Device............................................................................................... 25
Figure 4.11 Authentication Pop-up Windows.............................................................................................................. 26
Figure 4.12 User Interface of Web Configuration......................................................................................................... 26
Figure 4.13 Menu-tree of All Available Modes and Options of SW550XC Series ...................................................... 27
Figure 4.14 Configuration Page of Operation Mode with Wireless Client Setting ..................................................... 28
Figure 4.15 Waiting Message ....................................................................................................................................... 29
Figure 4.16 Completion of the settings and counting down for a page reload ........................................................ 29
Figure 4.17 AP Client Operation Mode Setting............................................................................................................ 30
Figure 4.18 Overview Information Page of an SW550XC Device ............................................................................... 31

SW5502C
Wireless Serial Server
User Manual
Preface
Figure 4.19 Wireless Status page shows current information of SW550XC............................................................. 32
Figure 4.20 Transition page during the gathering of surrounding wireless network information............................ 33
Figure 4.21 Results of a Site Monitoring of SW550XC Series.................................................................................... 33
Figure 4.22 Network Settings Page (Wireless Client Mode)...................................................................................... 34
Figure 4.23 Network Settings Page for Bridged Interface (AP Client Mode)............................................................. 35
Figure 4.24 Enabling Wireless Profile Option to Add New Access Point................................................................... 36
Figure 4.25 Basic Setting List Webpage after Clicking Add Button ........................................................................... 37
Figure 4.26 Wireless Profile Page ................................................................................................................................ 38
Figure 4.27 Basic Settings for Wireless Connection when Wireless Profile is Enabled ........................................... 39
Figure 4.28 Basic Settings for Wireless Connection when Wireless Profile is Disabled.......................................... 40
Figure 4.29 Results of network scanning when uses “scan network” buttons ......................................................... 42
Figure 4.30 Result when there is no wireless network available in the area............................................................. 42
Figure 4.31 Wireless Advanced Settings Page when Wireless Profile is Disabled and Topology is set to
infrastucture ................................................................................................................................................................... 43
Figure 4.32 Wireless Advanced Settings Page when Wireless Profile is Enabled ................................................... 44
Figure 4.33 COM 1 Port Setting Page ......................................................................................................................... 45
Figure 4.34 Serial Settings Part of COM Port ............................................................................................................. 46
Figure 4.35 Advanced COM Port Settings Page......................................................................................................... 47
Figure 4.36 SNMP/Alert Settings Page ....................................................................................................................... 50
Figure 4.37 E-mail Settings Page ................................................................................................................................ 52
Figure 4.38 Sending Test E-mail Failed ...................................................................................................................... 52
Figure 4.39 System Log Settings Page ....................................................................................................................... 53
Figure 4.40 COM Log Settings Page ........................................................................................................................... 54
Figure 4.41 Event Log Page........................................................................................................................................... 55
Figure 4.42 COM Datalog Page ................................................................................................................................... 56
Figure 4.43 Date/Time Settings Page ......................................................................................................................... 57
Figure 4.44 Admin Settings Page................................................................................................................................ 58
Figure 4.45 Firmware Upgrade Page........................................................................................................................... 59
Figure 4.46 Backup/Restore Setting Page .................................................................................................................. 60
Figure 4.47 Management List Page ............................................................................................................................ 61
Figure 4.48 Successful Ping with No Packet Loss..................................................................................................... 62
Figure 4.49 Unsuccessful Ping with 100% Packet Loss ........................................................................................... 62
Figure 4.50 Reboot Page ............................................................................................................................................. 63
Figure 4.51 Pop-up Windows while Rebooting SW550XC with Reloading Countdown in Seconds........................ 63
Figure 5.1 Link Mode Options for COM 1 Port............................................................................................................ 64
Figure 5.2 An Example of TCP Server Link Mode....................................................................................................... 64
Figure 5.3 Connection Settings for TCP Server Link Mode ....................................................................................... 65
Figure 5.4 TCP Server Link Mode Settings under COM 1 Page................................................................................. 66
Figure 5.5 An Example of TCP Client Link Mode........................................................................................................ 68
Figure 5.6 Connection Settings for TCP Client Link Mode ........................................................................................ 68
Figure 5.7 TCP Client Link Mode Settings under COM 1 Page.................................................................................. 69
Figure 5.8 An Example of UDP Link Mode .................................................................................................................. 70
Figure 5.9 Connection Setting for UDP Link Mode..................................................................................................... 71
Figure 5.10 UDP Link Mode Settings under COM 1 Page.......................................................................................... 71
Figure 5.11 Virtual COM Application in TCP Server Link Mode................................................................................. 73
Figure 5.12 Virtual COM Application in TCP Client Link Mode.................................................................................. 74
Figure 5.13 Pair Connection Master Application in TCP Server Link Mode ............................................................ 75
Figure 5.14 Pair Connection Slave Application in TCP Client Link Mode ................................................................ 76
Figure 5.15 Reverse Telnet Application in TCP Server Link Mode ........................................................................... 77
Figure 5.16 An Example of Network Topology for Multi-Point Pair Connection in UDP Link Mode ...................... 78
Figure 5.17 Setting of Multiple TCP Connection Application via Maximum Connection Option ........................... 79

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Wireless Serial Server
User Manual
Preface
Figure 5.18 An Example of Network Topology for Multi-Point Pair Connection in TCP Link Mode...................... 80
Figure 5.19 Wireless Ad-Hoc Peer Settings for SW550XC ...................................................................................... 81
Figure 5.20 Wireless Client with WPA2-PSK Security Settings for SW550XC........................................................ 83
Figure 5.21 Wireless Client with PEAP Security Settings for SW550X.................................................................... 85
Figure 5.22 P2P Button in Wireless > Advanced Setting ............................................................................................. 86
Figure 5.23 Network Setting .......................................................................................................................................... 86
Figure 6.1 Enabled Virtual COM Application in TCP Server Link Mode................................................................... 90
Figure 6.2 Enabled Virtual COM Application in TCP Client Link Mode.................................................................... 90
Figure 6.3 An Example Diagram of Virtual COM Application over TCP/IP Network............................................... 91
Figure 6.4 Enable Virtual COM Application for COM 2 in TCP Server Link Mode................................................... 93
Figure 6.5 Serial/IP Tray Icon on Windows Notification Area .................................................................................. 94
Figure 6.6 A Pop-up Window for Selecting Virtual COM Ports ............................................................................... 94
Figure 6.7 Serial/IP Control Panel Window ............................................................................................................... 95
Figure 6.8 Configuring Virtual COM 2 Port as TCP Client........................................................................................ 96
Figure 6.9 Configuration Wizard Window for COM 1 ............................................................................................... 97
Figure 6.10 Timeout Warning on VCOM Connection ............................................................................................... 98
Figure 6.11 Error of Client not licensed for this server ............................................................................................ 99
Figure 6.12 Licensing Issue of Serial/IP Utility Software ......................................................................................... 99
Figure 6.13 VCOM Authentication failed due to Missing Username/Password................................................... 100
Figure 6.14 VCOM Authentication failed due to incorrect Username and/or Password...................................... 100
Figure 6.15 VCOM Authentication failed due to disabled VCOM Authentication on SW550X ............................ 101
Figure 6.16 Activity Panel of Serial/IP Port Monitor ............................................................................................... 102
Figure 6.17 Trace Panel of Serial/IP Port Monitor.................................................................................................. 103
Figure 6.18 Serial/IP Advanced Settings Window .................................................................................................. 105
Figure 6.19 Proxy Server Tab under Serial/IP Advanced Settings......................................................................... 106
List of Tables
Table 3.1 Packing List.................................................................................................................................................... 15
Table 3.2 Optional Accessories .................................................................................................................................... 15
Table 3.3 Device Ordering Information......................................................................................................................... 16
Table 3.4 Factory Default Network Settings................................................................................................................. 20
Table 3.5 SW550XC Series Factory Default Settings................................................................................................... 20
Table 4.1 Common Buttons in Web Configuration Menu........................................................................................... 27
Table 4.2 Default Settings in Infrastructure Mode:...................................................................................................... 39
Table 4.3 Default Settings in Ad Hoc Mode:................................................................................................................ 39
Table 5.1 An Example of Multi-Point Pair Connection’s Parameter Settings for UDP Link Mode ............................ 78
Table 5.2 An Example of Multi-Point Pair Connection’s Parameter Settings for TCP Link Mode ........................... 79
Table 5.3 Summary of Parameter Settings for Wireless Ad-Hoc Peer with WEP Security....................................... 81
Table 5.4 Summary of Parameter Settings for Wireless Client in Infrastructure Topology with WPA2-PSK Security
......................................................................................................................................................................................... 84
Table 5.5 Wireless Client-Infrastructure Topology Parameters with WPA2 (PEAP-MSCHAPv2) Security............. 85
Table 7.1 SW550XC series and their interfaces........................................................................................................ 107
Table 7.2 Physical Characteristics of SW550XC Series ........................................................................................... 107
Table 7.3 Descriptions of LED Status Indicators....................................................................................................... 107
Table 7.4 Interpretation of SW550XC’s Operation via Front Panel LEDs ................................................................ 108
Table 7.5 Dip Switch Functions of SW5501C ............................................................................................................ 108
Table 7.6 Dip Switch Function of SW5502C .............................................................................................................. 108
Table 7.7 Wireless Interface Specification of SW550XC Series.............................................................................. 109

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Wireless Serial Server
User Manual
Preface
Table 7.8 Operating Frequencies in Different Regions at 2.4GHz ........................................................................... 109
Table 7.9 Supported Data Rate for Wireless Interface under IEEE 802.11 Standards............................................ 109
Table 7.10 Maximum Output Power of Wireless Interface under IEEE 802.11Standards...................................... 110
Table 7.11 Receiver Sensitivity of Wireless Interface under IEEE 802.11 Standards ............................................. 110
Table 7.12 Conformed Radio Frequency and Electromagnetic Standards ............................................................. 111
Table 7.13 Conformed Electrical Standards.............................................................................................................. 111
Table 7.14 Software Specifications ........................................................................................................................... 113

SW5502C
Wireless Serial Server
User Manual
Preface
1Preface
1.1 Purpose of the Manual
This manual supports you during the installation and configuring of the SW550XC Industrial Wireless Serial Device
Server Series only. 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. Some background in general theory is
a must while 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 SW550XC Industrial Wireless Serial Device Server Series and that model only.
1.4 Warranty Period
We provide a 5-year limited warranty for SW550XC Industrial Wireless Serial Device Server Series.
1.5 Manufacturers Federal Communication Comm. Declaration of Conformity Statement
Model: SW550XC 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.
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.

SW5502C
Wireless Serial Server
User Manual
Preface
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 2.4 GHz frequency range use. FCC
requires this product to be used indoors for the frequency range 2.4 to 2.4x 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: SW550XC Industrial Wireless Serial Device Server Series
Declaration of Conformity with regard to the R&TTE Directive 1999/5/EC
This equipment is in compliance with the essential requirements and other relevant provisions of 1999/5/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 1999/5/EC has been
followed.This device also conforms to the EMC requirements of the Medical Devices Directive 93/42/EEC.
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.

SW5502C
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 SW550XC 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 2.2 Optional Accessories of Section 2.1.

SW5502C
Wireless Serial Server
User Manual
Introduction
2Introduction
2.1 Product Overview
The SW550xC Industrial Wireless Serial Device Server is the newest product in our wireless series. It is designed to
provide wireless connectivity to clients and serial devices thus creating a complete solution for your industrial
wireless networking. The SW550xC 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 SW550xC Series support IEEE 802.11b/g/n wireless connectivity standards, which can be operated in 2.4GHz
bands. It also supports “Wi-Fi Direct” technology that makes Wi-Fi usage to be an ease-to-use connectivity, and
delivers an industry-wide peer-to-peer solution based on broadly deployed Wi-Fi technologies. The SW550xC series
acts as a server for serial devices that are connected to its ports 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. The device supports D-sub9 or TB5 combo serial port (SW5502C).
As an example, user can connect serial devices to a Wireless Serial Device Server (SW550xC) and control them
through Wireless Networking Device such as wireless access point (AW5500C) 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 SW550xC 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
The SW550xC Series device is the latest addition to Atop Industrial Wireless products. Its 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 SW550xC are:
Support of popular wireless local area network standards IEEE 802.11b/g/n
Connect to with other wireless devices using 2.4 GHz
D-sub9 or TB5 combo serial port
Interface RS232/422/485 is selectable through software
Support Wi-Fi Direct technology that makes Wi-Fi usage to be an ease-to-use connectivity, and delivers an
industry-wide peer-to-peer solution based on broadly deployed Wi-Fi technologies
The antenna design that offers better wireless coverage and reduces wireless blind spots.
Certified wireless equipment by FCC (United States) and ETSI (Europe)
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.

SW5502C
Wireless Serial Server
User Manual
Getting Started
3Getting Started
3.1 Packing List
Inside the purchased package, you will find the following items:
Table 3.1 Packing List
Item
Quantity
Description
SW550xC Series
1
Industrial Wireless Serial Device Server
Antenna
1
2.4G gain: 2dBi antenna
DB9
1
9-pin plug of the D-Sub connector family
Terminal Block
5-pin 5.08mm lockable Terminal Block x 1 (SW5501C only)
5-pin 5.08mm lockable Terminal Block x 2 (SW5502C-TB only)
Documentation
1
Hardware Installation Guide (Warranty Card is included)
Mounting Kit
1
DIN-Rail Kit (Already mounted on the device)
CD (Utilities)
1
Inside you will find:
User’s Manual
Installation Guide
Device Management© Utility and its user manual
VirtualCOM Utility (for Windows® V)
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 SW550xC series.
Table 3.2 Optional Accessories
Item
Description
Power Adapter
AD17-24C(US-Y)
Y-Type power adaptor,100-240VAC input, 0.6A @ 24VDC output, US plug
Power Adapter
AD17-24D(EU-Y)
Y-Type power adaptor,100-240VAC input, 0.6A @ 24VDC output, EU plug
ADP-DB9(F)-TB5
Female DB9 to Female 3.81 TB5 Converter
WMK-454-Black
Black Aluminium Wall Mount Kit

SW5502C
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
SW5501C
1P1SW5501C0001G
1-port Industrial Wireless Serial Device Server, DB9 or TB5 combo
SW5502C
1P1SW5502C0001G
2-port Industrial Wireless Serial Device Server, DB9
SW5502C-TB
1P1SW5502CTB01G
2-port Industrial Wireless Serial Device Server, TB5
3.4 Appearance: front-power-side panels
The front panels of different models of SW550XC series are shown in the following figures. Note that the power
panel and the rear panel are the same for all models and depicted in Figure 3.4 and Figure 3.5, respectively. Note
that the detailed description of LEDs and DIP switch on the front panel can be found in Chapter 7.1 below.
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Figure 3.1 Panel of SW5501C
Figure 3.2 Panel of SW5502C Figure 3.3 Panel of SW5502C-TB

SW5502C
Wireless Serial Server
User Manual
Getting Started
Figure 3.4 Power Panel of all SW550XC Series
Note: The DIP switch on the front panel of SW550xC 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 6.5 and Table 6.6 summarize the functionalities of the DIP switches for COM1 and
COM2 on their SW550xC series.
The Rear panel (where you can mount the device on a rail or to the wall), is shown in Figure 3.5 and a simple
mounting instruction is given on Figure 3.6.
Figure 3.5 Rear Panel of All SW550XC Series
Figure 3.6 Mounting Instruction of All
SW550xC Series

SW5502C
Wireless Serial Server
User Manual
Getting Started
3.5 Serial Pin Assignments
3.5.1 D-Sub9 (DB9)
Pin#
RS-232
Full Duplex
4-W RS-422/RS-485
Full Duplex
2-W RS-485
Full 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
3.5.2 Terminal Block (TB5)
Pin#
RS-232
Full Duplex
4-W RS-422/RS-485
Full Duplex
2-W RS-485
Full 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, adapter, pwr 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 SW550XC device. Note
that the antenna’s connectors are female reverse-polarity (RP) SMA type. The gains of the antennas are
3dBi at 2.4GHz. 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

SW5502C
Wireless Serial Server
User Manual
Getting Started
SW550XC 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.. 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.

SW5502C
Wireless Serial Server
User Manual
Getting Started
3.7 Factory Default Settings
Upon arrival, the device is set with factory default settings. The SW550XC 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 as shown below.
Table 3.5 SW550XC Series Factory Default Settings
Parameter
Default Values
Security
User Name
Admin
Password
default
Serial
COM1
RS-232, 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 SW550XC Series to the
factory default settings.