AAxeon STW-602C User manual

Wireless Serial-Ethernet Server
STW-602C
User’s Manual
Version 1.1

User’s Manual Version 1.1
Airolinx Wireless Serial-Ethernet Server
STW-602C
I
Important Announcement
The information contained in this document is the property of Aaxeon Technologies, LLC and is supplied
for the sole purpose of operation and maintenance of products of Aaxeon Technologies, LLC 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 Aaxeon Technologies, LLC.
Published by
Aaxeon Technologies, LLC
Toll-Free: 1-877-AAXEON-5
1-877-229-3665
e-Mail: inf[email protected]om
Website: www.aaxeon.com
Copyright © 2008 Aaxeon Technologies, LLC All rights reserved.
All other product names referenced herein are registered trademarks of their respective companies.

II
FCC WARNING
Class B for this product
This product has been tested and found to comply with the limits for a Class B 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.

Consult the dealer or an experienced radio/TV technician for help.
This product 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.
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.
IMPORTANT NOTE:
FCC Radiation Exposure Statement:
This product complies with FCC radiation exposure limits set forth for an uncontrolled environment. This
model should be installed and operated with minimum distance 20cm between the radiator & your body.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
IEEE 802.11b/g operation of this product in the U.S.A. is firmware-limited to channels 1 through 11.
UL NOTICE FOR POWER SUPPLIER
The STW-602C product is intended to be supplied by a Listed Power Unit marked with “LPS”, “Limited
Power Source” or “Class 2” and output rate 9~48VDC, 1.0A minimum. Or, use the recommended power
supply in “Optional Accessories”.

III
Contents
1. Introduction .......................................................................................................................................... 1
1.1. Overview......................................................................................................................................... 1
1.2. Features.......................................................................................................................................... 1
2. Getting Started ..................................................................................................................................... 2
2.1. Packaging Include........................................................................................................................... 2
2.2. Ordering information ....................................................................................................................... 2
2.3. Interfaces ........................................................................................................................................ 2
2.4. Installation Procedures ................................................................................................................... 2
3. Software Setup..................................................................................................................................... 3
3.1. Default Settings............................................................................................................................... 3
3.2. IPAssignment................................................................................................................................. 3
3.2.1. Configure IP by SerialManager Utility......................................................................................4
3.2.2. Configure IP by web server .....................................................................................................5
3.2.3. Configure IP by Telnet utility....................................................................................................5
3.2.4. Auto IP with DHCP ..................................................................................................................5
3.3. TCP/IP Port Number....................................................................................................................... 5
4. Application Connectivity..................................................................................................................... 6
4.1. TCP & UDP Protocols..................................................................................................................... 6
4.1.1. Transmission Control Protocol (TCP)......................................................................................6
4.1.2. User Datagram Protocol (UDP)...............................................................................................6
4.2. Connectivity Topology..................................................................................................................... 6
4.2.1. Virtual COM Mode ...................................................................................................................6
4.2.2. Tunneling Mode .......................................................................................................................8
5. Configure STW-602C by web interface............................................................................................ 10
5.1. Login to System ............................................................................................................................ 10
5.2. General Information ...................................................................................................................... 10
5.3. Network Configuration ..................................................................................................................13
5.3.1. LAN Settings..........................................................................................................................14
5.3.2. WLAN Settings ......................................................................................................................14
5.3.3. DNS Settings .........................................................................................................................14
5.3.4. SNMP Settings.......................................................................................................................14
5.4. Wireless Configuration.................................................................................................................. 15
5.4.1. Wireless Detail Settings.........................................................................................................16
5.4.2. Sample Wireless Application Cases......................................................................................16
5.5. COM Port Configuration................................................................................................................ 18
5.5.1. Link Mode Settings................................................................................................................19
5.5.2. TCP Server Mode..................................................................................................................19
5.5.3. TCP Client Mode....................................................................................................................20
5.5.4. UDP Mode .............................................................................................................................20
5.5.5. Serial Settings........................................................................................................................21
5.5.6. Delimiter Settings...................................................................................................................21
5.6. Configure System ......................................................................................................................... 22
5.6.1. Configure Time by NTP Service............................................................................................22

IV
5.6.2. Configure WLAN Region .......................................................................................................23
5.6.3. Change the Password ...........................................................................................................23
5.6.4. Restoring Factory Default......................................................................................................24
5.6.5. Restart System ......................................................................................................................24
6. Telnet Configuration .......................................................................................................................... 25
6.1. General Information ...................................................................................................................... 26
6.2. Networking Configuration.............................................................................................................. 27
6.2.1. LAN Settings..........................................................................................................................28
6.2.2. DNS Settings .........................................................................................................................28
6.2.3. SNMP Settings.......................................................................................................................29
6.3. Wireless Configuration.................................................................................................................. 32
6.3.1. Wireless IP, Netmask, Gateway, and IP mode Settings .......................................................33
6.3.2. Configure Region...................................................................................................................34
6.3.3. Site Survey ............................................................................................................................34
6.3.4. Manual Wireless Settings......................................................................................................35
6.3.5. Configure Ad-Hoc Mode: .......................................................................................................36
6.3.6. Configure Infrastructure Mode...............................................................................................37
6.4. COM Port Configuration................................................................................................................ 37
6.4.1. TCP Server Mode for Link Mode...........................................................................................38
6.4.2. TCP Client for Link Mode.......................................................................................................39
6.4.3. UDP for Link Mode ................................................................................................................39
6.4.4. Serial Settings........................................................................................................................40
6.4.5. Packet Delimiter.....................................................................................................................40
6.5. Security Configuration...................................................................................................................42
6.5.1. Change the Password ...........................................................................................................43
Appendix A. Using Virtual COM........................................................................................................ 44
A.1. Pre-installation Requirements.......................................................................................................44
A.2. Applying to the Serial Server ........................................................................................................ 44
A.3. Virtual COM Communication ........................................................................................................45
Appendix B. Configuration Utility..................................................................................................... 48
B.1. SerialManager Utility Introduction………………………………………………………………………53
B.2. Interface…………………………………………………………………………………………………...53
B.3. Functions………………………………………………………………………………………………….53
Appendix C. Upgrading System Software ....................................................................................... 64
C.1. System Upgrading Procedures.....................................................................................................64
C.2. Critical Issues in Upgrading Process............................................................................................64
Appendix D. Specifications............................................................................................................... 66
D.1. Hardware Specifications...............................................................................................................66
D.2. Software Specifications................................................................................................................. 67
D.3. Pin Assignments ...........................................................................................................................67
D.4. Beep & LED Status.......................................................................................................................61

User’s Manual Version 1.1
Airolinx Wireless Serial-Ethernet Server
STW-602C
1
1. Introduction
1.1. Overview
The STW-602C Wireless Serial Server is a gateway between wireless LAN or Ethernet (TCP/IP) and
RS-232/RS-485 communications. It allows almost any serial devices to be connected to a new or
existing wireless network. The information transmitted by Serial Server is transparent to both host
computers (IP network over wireless LAN or Ethernet) and devices (RS-232/RS-485). Data from the
wireless LAN or Ethernet (TCP/IP) is transmitted to the designated RS-232/RS-485 port and data
from RS-232/RS-485 port is transmitted to the Wireless or Ethernet (TCP/IP) transparently.
In the computer integration manufacturing or industrial automation area, Wireless Serial Server is
used for field devices to direct connect to network. Terminal Server (main control program run in the
STW-602C) transforms whatever data received from RS-232/RS-485 to TCP/UDP port then
connects devices to the IP network via a single application program or multiple application programs.
Many control devices provide the ability to communicate with hosts through RS-232/RS-485 however
RS-232/RS-485 serial communication has its limitations. For instance, it is hard to transfer data
through a long distance. With the STW-602C, it is possible to communicate with a remote device in
the Intranet environment or even in the Internet and thus, increases the communication distance
dramatically.
Flexible configuration options enable this unit to be setup remotely over IP network by Telnet, web
browser, or Window utility. Packed in a rugged DIN Rail mountable case and 9~48V DC power input
range, the STW-602C is ideal for almost any industrial and manufacturing automation.
1.2. Features

Dual-port DIN-Rail mounting module.

Metal housing with IP50 standard.

15KV ESD protection for serial ports

IEEE 802.11g 54Mbps wireless network connectivity

Support UDP, TCP server and client protocols for Virtual COM mode and pair connection

Selectable RS-232/RS-485/RS-422 serial mode by software

Configurable via console, telnet, built-in web server and Windows-based utilities

Standard 2.4GHz High-gain antenna

Upgradeable firmware via network

2
2. Getting Started
2.1. Packaging Include

Wireless Serial Server x 1

5 pins Terminal Block for Serial Connector (TB model only) x 2

3 pins Terminal Block for Power Connector (TB model only) x 1

4 dBi Antenna x 1

Wall mount kits x 2

Wireless Serial Server quick start guide x 1

Product CD containing configuration utility x 1
NOTE: Notify your sales representative if any of the above items is missing or damaged.
2.2. Ordering information
STW-601C 2-ports wireless serial server with D-Sub 9pin serial connector
2.3. Interfaces
The STW-602C interface is shown by Fig 1.
DB Model (9 pin D-Sub Connectors)
Fig 1. STW-602C Interfaces
2.4. Installation Procedures

Prepare necessary cables, DC power adapter and RS-232/RS-485 connector.

Place STW-602C under the access point signal coverage area, or connect STW-602C to Ethernet
cable with RJ45 connector.

Connect STW-602C serial port to serial device, make sure the connector and wiring of RS-232 or
RS-485 is correct.

Plug in STW-602C to DC-9-48V power source (with DC-jack or 3-pin terminal bock connector),
buzzer will beep and the RUN LED will blink if STW-602C functions normally. For LED Status sees
Appendix D4
Use SerialManager configuration utility on the product CD to check the status of STW-602C. If it starts up
successfully, User shall find the IP and MAC address of STW-602C. User can change IP address, gateway
IP address and subnet mask networking parameters of STW-602C according to user networking
configurations.

3
Software Setup
Now the STW-602C hardware is installed and power is on, network IP configuration will be set in this
section.
2.5. Default Settings
The STW-602C has two IP addresses one for Ethernet interface and another one for wireless
network interface. These default settings are shown from under information
Default IP addresses
Interface Device IP Subnet mask Gateway IP
LAN port 10.0.0.50.100 255.255.0.0 10.0.0.254
WLAN Port 192.168.1.1 255.255.255.0 192.168.1.254
The other default settings of STW-602C are shown in the following table
Property Default Value
Ethernet Port
IPAddress 10.0.50.100
Gateway 10.0.0.254
Subnet Mask 255.255.0.0
WLAN Port
IPAddress 192.168.1.100
Gateway 192.168.1.254
Subnet Mask 255.255.255.0
Security
User Name Admin
Password Null (Leave it blank)
Serial
COM 9600/None/ 8/1,No flow control, packet delimiter disabled
Link Mode TCP Server, Listen port 4660/4661,No Filter, Virtual COM disabled
SNMP
SysName of SNMP Name
SysLocation of SNMP Location
SysContact of SNMP Contact
Table 1. Default settings of the STW-602C device
NOTE: Press reset button for 5 seconds then release the button to restart STW-602C to the default
settings.
Waring: Please avoid setting LAN and WLAN IP address in the same subnet, that may make
unexpect networking problem.
2.6. IP Assignment

4
2.6.1. Configure IP by SerialManager Utility
Use SerialManager configuration utility that comes with product CD or diskette to configure the network
parameters. For more details, please refer to Appendix B1.
Find new device and IP assignment

Use SerialManager Utility for finding new device IP address, get device’s current IP from table
list

Re-assigned IP, network mask and gateway if need with SerialManager Utility.

User can configure User ID, Password and Host Name with SerialManager Utility.
Fig 2. IP settings for SerialManager Utility tool
Note: All settings were NOT changed if user ID or password was incorrect.
If there is more than one device using the same IP address in same Subnet. User has to correct mapping
between MAC address & IP address by ARP commands.
ARP commands
ARP (address resolution protocol) commands can be used to assign a static IP address on STW-602C
using its hardware MAC (media access control) address. The MAC address"0060E9-xxxxxx" is printed on
the rear side of STW-602C. The following figure shows how to use ARP command on MS-DOS command
prompt window.
Example: Set IP 10.0.50.101 to MAC address 00-60-E9-00-79-F8.
Fig 3. Map IP address to MAC address by ARP Command
Note: ARP commands can only be used to set a static IP address of STW-602C
- arp –a command show the current mapping IP and MAC addresses.
- arp –s “IP address” “MAC address” map the IP address to specify MAC address.

5
2.6.2. Configure IP by web interface
Use common Web browser, ex. Microsoft Internet Explorer or Mozilla Firefox, to configure the network
parameters of STW-602C.

Open web browser, type in the IP address (default IP: 10.0.50.100) of STW-602C to be
configured. Default user name is admin and default password is null (leave it blank).

Configure IP settings from web Network links page then click “Save Configuration” to save
settings.

Click on ”Restart” button to make the change effective.
Please refer to contents of Web Configuration section for more details.
.
2.6.3. Configure IP by Telnet utility
Use common Telnet utility, ex. Microsoft Hyper-terminal, to configure the network parameters of STW-602C.

Run command telnet “IP address” to telnet to STW-602C. Default IP address is 10.0.50.100
and default password is null (leave it blank).

Configure IP settings from network settings menu, and restart system after saved settings.
Please refer to Telnet Configuration section for more details.
2.6.4. Auto IP with DHCP
DHCP server will automatically supply an IP address gateway address, and subnet mask to STW-602C.
By default, the DHCP client function on STW-602C is disabled, user can activate the DHCP functions by the
following steps

Execute SerialManager Utility

Click on the IP address (of STW-602C)

Click “Config” to pop-up the static IP Dialog Window

Check on ”Auto IP”

Click “Config Now” (The STW-602C will restart and obtain the IP from the DHCP server
automatically)
2.7. TCP/IP Port Number
Default Port numbers of STW-602C is 4660 (1st port) & 4661 (2nd Port) and it is associated with the serial port
COM1 and COM2 respectively. After the application program connected to the TCP port 4660 (or 4661) on
the STW-602C, data of user’s application program are transmitted transparently to STW-602C and vice
versa.

6
3. Application Connectivity
STW-602C provides Tunneling and Virtual COM operation mode. The STW-602C is designed to transmit
data between one-or-more serial devices to/from one-or-more TCP/IP devices through wireless or wire
Ethernet, so STW-602C can enhance the accessibility of the serial device through the ubiquitous TCP/IP
based Ethernet. The connection distance limit is overcome by STW-602C. Examples of these devices are
PLC controllers, card readers, display signs, security controls, CNC controller, etc.
3.1. TCP & UDP Protocols
STW-602C can be operated in two most common protocols TCP and UDP.
3.1.1. Transmission Control Protocol (TCP)
TCP provides a connection and a byte oriented data stream with control parameters such as flow control,
multiple ports option, and order delivery notification. Once the connection is established, data can be
transmitted in both directions. TCP guarantees data is transmitted from one node to the other node(s) in
orderly. The protocol also distinguishes the transmitted data for different applications (such as a Web server
or an Email server) on the same computer.
For redundant or dual-network connectivity purposes, STW-602C offers two TCP operation Modes
so users may choose for their specific application, TCP Server Mode and TCP Client Mode.
3.1.2. User Datagram Protocol (UDP)
UDP is a faster datagram delivery protocol. User can configure STW-602C to work in the UDP mode. UDP
is connectionless protocol and can transmit multicast data to/from a serial device to one/multiple host
computer. Because UDP is the connectionless protocol, UDP does not guarantee the reliability and orderly
data streams like TCP protocol. Datagram may arrive out of order or lose without notice. But the advantage
of UDP is the speed. UDP is faster and hence more attractive in time-sensitive applications.
3.2. Connectivity Topology
STW-602C is also equipped with Tunneling and Virtual COM operation modes. It is designed to transmit
data to/from multiple serial devices and from/to multiple TCP/IP devices on Ethernet, so it can enhance the
accessibility of the serial devices immensely. Fig 4. is the example of STW-602C connection topology.
Fig 4. Typical Topology of STW-602C Connection
3.2.1. Virtual COM Mode
The Virtual COM software emulates a serial port with Internet or LAN topology. In the Virtual COM Mode,
COM port data (RS232) is encapsulated to Ethernet data format. By creating a virtual COM port on a PC,

7
the Virtual COM driver redirects communications from the virtual COM port to the destination IP address
(and the designated port number) by encapsulated COM data into IP data. Fig 5. illustrates a Virtual COM
connection diagram.
Fig 5. TCP Connection in Virtual COM Mode
TCP Server in Virtual COM Mode
STW-602C can be configured in the TCP server mode (PC as a client) with a unique IP and Port number,
and STW-602C waits passively for the PC to establish a connection to. After the connection is established,
PC can communicate to serial devices through STW-602C.
Configure STW-602C to be TCP server
Using one of the three configuration methods (Telnet, Web, and console), User can configure STW-602C to
be as TCP Server as following.

Disabled the IP filter (default)

Set the port number (default port is 4660 for COM1, 4661 for COM2).

If IP filter is enabled, only the assigned source IP is allowed to be connected to STW-602C.
Fig 6. TCP Server in Virtual COM Mode
TCP Client in Virtual COM Mode
STW-602C can be configured to be TCP Client mode (PC as a server) to establish a TCP connection to an
application server on PC, or the Remote Control Host. Once the connection is established, PC or Remote
Control Host can exchange data with several serial devices at the same time through STW-602C.
Configuring STW-602C to be TCP client

8
User can configure STW-602C to be as TCP Client for example, from Fig. 7. PC, as a server, has IP
address 10.0.0.100 and listening on port 1000. Each STW-602C, connected with serial device, configured
as TCP client mode with destination IP address 10.0.0.100 and the destination port 1000, and the IP filter is
disabled (by default).
Fig 7. TCP Client in Virtual COM Mode
3.2.2. Tunneling Mode
Tunneling Mode is used for multiple serial devices to “talk” among one another through STW-602C’s
wireless LAN or wired Ethernet. This mode is particularly useful when two or more serial devices are far
away. This mode can be used to extend the normal serial communication distance of 15 m to 100 m or
longer.
One STW-602C can be configured to be the TCP Server Mode with serial device connected and also
another STW-602C is configured as TCP client with serial device connected. After the connection is
established, both serial devices can exchange data to each other transparently. For example, User can
implement STW-602C tunneling mode for Master /Slave mode PLCs or between other serial devices.
Fig 8. TCP Link in Tunneling mode
Configuring STW-602C to Tunneling Mode
Using one of three configuration methods (Telnet, Web, or Console), user can configure STW-602C to TCP
Server mode with a desired IP address and port, and with other STW-602C is configured as TCP Clients
mode with Server IP and port as destination IP and port respectively.
Note: TCP client has to assign the destination IP and the destination port corresponding to TCP
server’s IP and listening port (example: TCP 4660 port).


9
Fig 9. TCP Tunneling Mode
UDP
In UDP mode, User may exchange Multicast data from one STW-602C with multiple STW-602Cs, Vice
versa is also true.
Fig 10. UDP Link in Tunneling mode
Configure STW-602C in UDP Mode
Use one of the three configuration methods (Telnet, Web, and console). User can configure STW-602C to
UDP mode. In UDP mode, STW-602C can be configured to communicate to more than one node
(Multicasting). Note that the Multicast IP address is limited by the Class of IP address and subnet mask. As
an example, for a network of Class C of subnet 192.168.1.X and a subnet mask of 255.255.255.0, the
maximum Multicast IP address to be configured is four destinations IP’s.
Fig 11. Multi-UDP Link in Tunneling Mode

10
4. Configure STW-602C by web interface
User has to assign IP address to STW-602C before working on web configuration operations. Please refer
to section 3.2 for more detail.
4.1. Login to System
Open one of the web browsers, ex. Microsoft IE or Firefox etc. Enter the IP address of STW-602C on the
URL. Example: http://10.0.50.100 or http://user-device-IP
The following authentication screen shall appear. Enter user name and password then click on “OK”. The
default user name is admin and password is null (leave it blank).
Fig 12. Authorization request for system security
The overview screen shall appear (Fig. 13).
4.2. General Information
This system overview window gives the general information on STW-602C, included Network, and Serial
information.

11
Fig 13. Overview for system information by Web Interface
Device Information
STW-602C’s system information includes model name、Device Name、Kernel version and AP version.
The information is read only and is attributed from another setting page or system status

12
Fig 14. Device Information from Overview web page
Networking information
Networking information fields are displayed both ‘LAN & Wireless LAN (WLAN) Information. The
information provided LAN MAC address, LAN IP address, WLAN MAC address, WLAN IP address and
WLAN status
Fig 15. Network Information from Overview web page
Serial Information
STW-602C COM1 (COM2) information includes UART mode, link mode, baud rate, parity, data bits,
stop bits, flow control and link status. The COM1 (COM2) information is read only and is attributed from
Serial settings of COM1 or COM2 Port of STW-602C.
Fig 16. Serial Information from Overview web page

13
4.3. Network Configurations
There are four items allowed to change on Network page, included LAN, WLAN, DNS and SNMP
Information.
Fig 17. Network information by Web page

14
4.3.1. LAN Settings
Operation: [Network]

[LAN Setting]
Click on the “Network” link and the following screen shall appear. Fill in IP information on TCP/IP field.
Alternatively, click on DHCP to automatically obtain IP address, gateway and subnet mask information.
Fig 18. LAN Setting from Network web page
4.3.2. WLAN Settings
Operation: [Network]

[WLAN Settings]
Click on the “Network”link Mode and the following screen shall appear. Fill in WLAN IP information on
WLAN settings fields. Alternatively, User may activate DHCP client function by checking on “Obtain an IP
automatically” field to automatically obtain IP address, gateway and subnet mask from DHCP server.
Fig 19. WLAN Setting from Network web page
4.3.3. DNS Settings
Operation: [Network]

[DNS Settings]
Click on the “Network”link and the following screen shall appear. Fill in DNS information on DNS
Settings field. Alternatively, User can configure DNS by checking on “Obtain an IP automatically” field in
LAN Settings or WLAN Settings fields to automatically obtain DNS from DHCP server.
Fig 20. DNS Setting from Network web page
4.3.4. SNMP Settings

15
Operation: [Network]

[SNMP Settings]
Click on the “Network” link and the following screen shall appear. Check on “Enabling Settings” field. Fill
in desired SysName、SysLocation、SysContact information on SNMP Settings fields. The changes of
SNMP Settings will take effect only after the STW-602C restarted.
Fig 21. SNMP Setting from Network web page
4.4. Wireless Configuration
There are three fields of information on Wireless Configuration page which are Default, Current and
Site-Survey Information. Click on “Wireless” link and the following screen shall appear.
Fig 22. Wireless information by Web page
There are 3 buttons can be operated on Wireless page