Sollae Systems EZL-300W Lite User manual

EZL-300W Lite User’s Manual
Version 1.0
Sollae Systems Co., Ltd.

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TABLE OF CONTENTS
1.OVERVIEW····················································································- 5 -
1.1.Overview ·························································································································- 5 -
1.2.Components ···················································································································· - 5 -
1.3.Specifications ··················································································································- 6 -
1.4.Interface Specifications ·································································································- 6 -
1.4.1.Power ··························································································································- 6 -
1.4.2.RS232 Dsub Connector ·······························································································- 7 -
1.4.3.Status LED ··················································································································- 8 -
1.4.4.Wireless LAN Interface·······························································································- 8 -
2.INSTALLATION AND TEST OPERATION ····································- 9 -
2.1.Installation ······················································································································- 9 -
2.1.1.Checking Communication Environment····································································- 10 -
2.1.2.Configuring the Wireless LAN··················································································- 10 -
2.1.3.Connecting to the Network························································································- 10 -
2.1.4.Setting Environment Variables··················································································- 11 -
2.2.Test Operation·············································································································· - 11 -
2.2.1.Changing the IP Address of the PC ···········································································- 11 -
2.2.2.Installing the AP········································································································- 11 -
2.2.3.Installing ezTCP········································································································- 11 -
2.2.4.Configuring ezTCP ···································································································- 12 -
2.2.5.Connecting via the Serial Port of the PC····································································- 13 -
2.2.6.Communication Test ·································································································- 13 -
3.CONFIGURING WIRELESS LAN, IP ADDRESS, AND
ENVIRONMENT VALUES·································································· - 14 -
3.1.Configuring Wireless LAN ·························································································- 14 -
3.1.1.Items to Check for the Wireless LAN········································································- 14 -
3.1.2.Setting Wireless LAN Items of the ezTCP·································································- 16 -

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3.2.Setting the IP Address and Environment Values······················································- 17 -
3.2.1.ezConfig····················································································································- 18 -
3.2.2.AT Command············································································································- 22 -
3.2.3.Setting the IP Address Using the ARP·······································································- 22 -
3.2.4.Setting IP Address-related Items through the DHCP Server ······································- 23 -
4.OPERATION MODE ···································································· - 24 -
4.1.Overview and How To Enter Each Mode··································································- 24 -
4.1.1.Overview···················································································································- 24 -
4.1.2.How To Enter Each Mode ·························································································- 24 -
4.2.Serial Configuration Mode and ISP Mode································································- 26 -
4.2.1.Serial Configuration Mode ························································································- 26 -
4.2.2.ISP Mode ··················································································································- 26 -
4.3.Normal Communication Mode···················································································- 26 -
5.NORMAL COMMUNICATION MODES ·······································- 28 -
5.1.T2S (TCP to Serial)······································································································ - 28 -
5.2.ATC (AT Command)····································································································- 30 -
5.3.COD(Connect On Demand)························································································- 32 -
5.4.U2S (UDP to Serial) ·····································································································- 34 -
6.ATC MODE ··················································································- 36 -
6.1.Overview ·······················································································································- 36 -
6.1.1.AT command format··································································································- 36 -
6.2.Basic AT Commands···································································································· - 36 -
6.3.Extended AT commands······························································································- 37 -
6.4.Online State and Online Command State ·································································- 37 -
6.4.1.How to switch to online command state from online state ·········································- 38 -
6.4.2.How to switch to online command state ····································································- 38 -

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6.5.Example of Configuration by AT Commands ··························································- 38 -
6.6.Example of Connection ·······························································································- 39 -
6.6.1.Example of Active Connection ··················································································- 39 -
6.6.2.Example of Passive Connection·················································································- 39 -
6.7.Example of Termination······························································································ - 39 -
6.7.1.Example of Active Termination ·················································································- 39 -
6.7.2.Example of Passive Termination················································································- 40 -
7.TECHNICAL SUPPORT, WARRANTY, AND NOTES ON
OPERATION ······················································································ - 41 -
7.1.Technical Support ········································································································- 41 -
7.1.1.Warranty ···················································································································- 41 -
7.1.2.Refund·······················································································································- 41 -
7.1.3.Free Repair Services··································································································- 41 -
7.1.4.Charged Repair Services ···························································································- 41 -
7.1.5.Notes on Operation····································································································- 42 -

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1. OVERVIEW
1.1. Overview
With the development of Internet technologies, demands for data communication
through the Internet keep increasing. However, to have data communication through
the Internet, users must use TCP/IP protocol which is the basic communication protocol
of the Internet. In other words, to connect a device to the Internet, the user must
implement TCP/IP protocol. To implement TCP/IP protocol, the user must implement
TCP/IP protocol by themselves, port open TCP/IP, or use an OS. However, these
methods are quite burdensome in terms of time, cost, and technology.
As a family of serial to TCP/IP protocol converters, ezTCP series manufactured by
Sollae Systems provide TCP/IP communication functions (Internet communication
functions) "only through serial port connection." The ezTCP series perform TCP/IP
protocol processing on data received from the serial port, and send the processed data to
the Internet. Similarly, the ezTCP series perform TCP/IP protocol processing on data
received from the Internet and sends the processed data to the serial port.
EZL-300W Lite(it is pronounced as “lait”), which is one of ezTCP products, provides
TCP/IP communication through IEEE802.11b (wireless LAN). In other words, like
other ezTCP products, EZL-300W Lite TCP/IP-processes data received from the serial
port and sends the processed data to the wireless LAN network. And EZL-300W
Lite(hereafter ezTCP) TCP/IP-processes data received from the wireless LAN network
and sends the processed data to the serial port.
ezTCP supports the infrastructure network through the Access Point (AP) and also
provides an "ad-hoc" network function supporting peer to peer communication without
any AP.
As ezTCP provides DHCP as well as TCP/IP/UDP, ezTCP can be applied to cable
networks.
1.2. Components
zEZL-300W Lite Main Body
z3.3V PCMCIA Wireless LAN Card(16bit PC Card) Supporting IEEE802.11b
(option)
z5V SMPS Adapter (option)
zRS-232 Cable (option)

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1.3. Specifications
Input Voltage 5V
Power Current
Consumption
320mA typical
(It depends on wireless LAN card)
Size 137mm x 78mm x 28mm
Weight 305 g
Serial 9pin Dsub male
Interface
Network 16bit PC card
Serial Port RS232 level(1200bps ~ 115200bps)
RTS/CTS hardware flow-control
Network IEEE802.11b wireless LAN(infrastructure/ad-hoc)
Protocols TCP, UDP, IP, ICMP, ARP, DHCP, WEP
T2S TCP, server mode
COD TCP, client mode
ATC TCP, server/client modes
(AT command emulation)
Communicat
-ion
Modes
U2S UDP
ezConfig Configuration utility via LAN
ezSerialConfig Configuration utility via serial
ezterm Socket communication utility for test
Utilities
wflash Firmware download utility
)Download utilities and firmware from http://www.eztcp.com.
1.4. Interface Specifications
1.4.1. Power
The user must use the DC5V SMPS power adapter provided by Sollae
Systems. Specifications of a power jack are as shown below.

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1.4.2. RS232 Dsub Connector
A serial port connector is interfaced through the 9pin Dsub male connector. For
specifications of each pin, see the following:
No. Name Description Signal Level Direction Remark
1 NC
2 RXD Receive Data RS232 Input mandatory
3 TXD Transmit Data RS232 Output mandatory
4 DTR Data Terminal Ready RS232 Output Always ON
5 GND Ground Ground - mandatory
6 DSR Data Set Ready RS232 Input Not used
7 RTS Request To Send RS232 Output optional
8 CTS Clear To Send RS232 Input optional
9 NC

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1.4.3. Status LED
In ezTCP, there are total 5 status LEDs.
Each status LED functions as follows:
Name Description Color LED Status Description
PWR Power Red Turned on When the power is on
Blinking
once per
second
When IP address is
assigned, but no TCP
connection established
Blinking 4
times every 2
seconds
When no IP address was
assigned(DHCP)
STS Status Yellow
Turned on During a TCP connection
LINK Wireless LAN
Link Green Turned on the wireless LAN LINK is established
RXD Wireless LAN
Reception Yellow Turned on When a packet is received from the wireless LAN
TXD Wireless LAN
Transmission Green Turned on
When a packet is
transmitted to the wireless
LAN
1.4.4. Wireless LAN Interface
ezTCP requires PCMCIA wireless LAN card, which should be 3.3V 16 bits PC card
and compatible to PRISM 2.5 or PRISM 3.0 of Intersil.

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2. Installation and Test Operation
2.1. Installation
Install ezTCP as follows:
Categories Sub-
categories Context See
Wireless LAN environment 3.1.1.
IP address environment
Serial port setup values
1. Checking
Communication
Environment
Items to
check
Application program to use
Setup tool ezSerialConfig 3.1.2.
Wireless LAN Types
(Infrastructure and ad-hoc)
Service Set Identification (SSID)
Channel
2. Configuring
the Wireless
LAN Setup Items
Whether to use WEP
(If used, set key value)
3.1.1.
3. Connecting
to the Network
Confirming
Procedure Checking link LED lightning status
Set by ezConfig
(a configuration utility through a network) 3.2.1.
Using AT command in ATC mode 6.
Setup
Procedure
Using ARP
(To set only the IP address temporarily) 3.2.3.
IP address-related items 3.2.
Serial port-related items 3.2.
4. Setting
Environment
Variables
Setup Items Communication mode
(To be decided according to the application
program)
4.3.
5. Field Application

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2.1.1. Checking Communication Environment
Before installing ezTCP, the user must check conditions of the network to install the
ezTCP as follows:
zWireless LAN network types (infrastructure/ad-hoc)
zthe SSID and the channel of the wireless LAN
zWhether to use WEP and WEP setup values (the number of bits and key
values)
zAuthentication Protocol for wireless LAN access
zIP address environment (Local IP, subnet mask, gateway, etc.)
zSerial port items of the device to connect (baudrate, databit, parity, and stop
bit)
zProtocol of the application program to use (TCP/UDP, server/client, etc.)
)For more information about the wireless LAN, see “ 3.1 Configuring the
Wireless LAN."
)For more information about protocol of the application program to use, see
“ 4.3 Normal Communication Mode. ”
※ It is not applicable to a wireless LAN which use authentication, because ezTCP
doesn’t support authentication protocols for the wireless LAN
2.1.2. Configuring the Wireless LAN
Before using the ezTCP, the user must set wireless LAN-related items. Wireless LAN-
related items can be set via ezSerialConfig in a serial configuration mode. Supply
power without the PCMCIA card insertion to enter into the serial configuration
mode. In the serial configuration mode, the user can set not only wireless LAN-related
items but also all setup values of the ezTCP.
)For more information about the serial configuration mode, see “ 4. Operation
Modes."
)For more information about wireless LAN-related items in serial configuration
mode, see
“ 3.1 Configuring the Wireless LAN. ”
2.1.3. Connecting to the Network
Insert the PCMCIA card while power is not supplied. Then, connect the device with the

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ezTCP using RS232 cable that is compliant with the specification, and supply
power. After power is supplied, the link LED should be turned on. When the link
LED is on, it means that a link has been established between the AP and wireless LAN
device or between the wireless LAN devices to enable communication between them.
2.1.4. Setting Environment Variables
Once a connection to the network has been established, set environment variables -
variables relating to the IP address, the serial port, and communication mode - using
ezConfig which is an environment variable configuration program.
)For more information about environment variables, see “ 3.2 Setting IP
Address and Environment Values.
”
2.2. Test Operation
Perform test operation according to the following sequence. A method to perform the
test operation will now be described, assuming that the network is configured as the
infrastructure, the AP and the PC are directly connected via a crossed LAN cable, and
the IP address of the PC is 10.1.0.2.
2.2.1. Changing the IP Address of the PC
Change the IP address of the PC as follows:
IP Address 10.1.0.2
Subnet Mask 255.0.0.0
Gateway IP Address 0.0.0.0
2.2.2. Installing the AP
Connect the AP with the PC through the crossed LAN cable.(When connecting through
a hub, use a one-to-one cable for this connection.) After installing the cable, supply
power to the AP as provided by the AP vendor. After supplying power, check the link
LED indicating a connection between the AP and PC to make sure this connection is
successfully made.
2.2.3. Installing ezTCP
Connect the PC with ezTCP using RS232 cable provided by Sollae Systems, and insert
the PCMCIA card. When power is supplied using the power adapter designed for

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ezTCP by Sollae Systems, ezTCP attempts making a connection with the AP that
replies first. Once ezTCP is connected with the AP, the link LED is turned on and then a
communication through the wireless LAN is possible.
※ It is possible that ezTCP connect other AP because SSID is not set. In this case,
you should set SSID to ezTCP via ezSerialConfig
2.2.4. Configuring ezTCP
Use ezConfig (the ezTCP configuration program) and change the configuration
of ezTCP as follows:
Run ezConfig, and click on [PROBE] button on the ezConfig window. Then, the
ezConfig will search for ezTCPs.
Once the ezTCP(s) is(are) found, the MAC address (hardware address) indicated at the
bottom of the ezTCP case will be displayed in the [MAC ADDRESS LIST] window.
Select the corresponding MAC address, and change the [MUX TYPE] into
[T2S(0)]. Then, enter 1470 in the [LOCAL PORT] field and click on [WRITE] button
to save the setup values.

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2.2.5. Connecting via the Serial Port of the PC
Connect between the serial port of the PC and the serial port of the ezTCP using the
serial communication cable provided by Sollae Systems. Then, run a serial
communication program such as Hyper Terminal. Select 19200bps for the serial port, 8
bits for the data bit, 1 bit for the stop bit, and no parity.
2.2.6. Communication Test
Once the preparation for serial communication has been completed, enter the following
in the command prompt of Windows, and establish a TCP connection using Telnet
program.
"telnet 10.1.0.1 1470"
When TCP connection is successfully established, "STS" LED of the ezTCP is turned on.
If "123" data is transmitted to Telnet window after checking that "STS" LED is on, then
"123" is displayed on Hyper Terminal. If "ABC" data is transmitted to Hyper Terminal
window, then "ABC" data is displayed on Telnet window. It means the communication
test is successful.

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3. Configuring Wireless LAN, IP Address, and
Environment Values
3.1. Configuring Wireless LAN
When configuring the wireless LAN, the user must check the network type and security
issues of the network currently being used or to be installed in the future.
3.1.1. Items to Check for the Wireless LAN
zNetwork Type (infrastructure/ad-hoc)
The infrastructure is a network connection mode that allows communication between
wireless LAN devices or between the wireless LAN and the wired LAN (Ethernet)
through the Access Point (AP). When a network type is set to infrastructure,
communication with wired LAN via AP is possible, which allows both wired and
wireless Internet communications.
<Infrastructure>
The ad-hoc network is designed to communicate between wireless LANs without any

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AP. Since communication is established without any AP, the user cannot access an
external network or the Internet. This is also called a peer-to-peer mode.
<Ad-hoc>
zService Set Identifier (SSID)
When configuring a network, the user can configure different networks using different
APs. In this case, the SSID is used to differentiate one network from another. In other
words, when configuring an infrastructure network, the user can make communication
with the AP which he/she wants to communicate with by setting the SSID of the desired
AP in the ezTCP. (See 3.1.2.) For information about SSID of the AP, AP manual or AP
configuration program can be referred to. If the user did not set the SSID, the ezTCP
will be connected with the AP that is first found when power is supplied.
The maximum length of the SSID is 32 bytes, and the user can use ASCII code to set the
SSID.
zChannel
The channel is communication path in the network that it belongs to. Channel values
are set as the same value with the AP.
zWired Equivalent Privacy (WEP)

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This is about security of the wireless LAN. The wireless LAN provides similar security
to that of the wired LAN using the WEP. To use the WEP, the user must set the key
value. According to the key value, data is encoded in 64 bits or 128 bits for
communication. If the user did not set the WEP, security-related problems may occur.
zAuthentication Protocols
To avoid illegal access to wireless LAN, there are various authentication protocols.
But ezTCP doesn’t support any authentication protocol. If a wireless LAN network uses
any authentication protocol, you should not install ezTCP to that network.
3.1.2. Setting Wireless LAN Items of the ezTCP
There are two ways to configure wireless LAN-related items - Windows
utility “ezSerialConfig”..
The following table describes each configuration field.
Field Description Factory-
set
TARGET
SSID SSID of the Network to Participate Not set.
CREATE
SSID
SSID of the Network to Newly Create When
Configuring an Ad-hoc Network Not set.
0) IBSS: Ad-hoc Network
1) BSS: Infrastructure Network
2) WDS: Reserved (Reserved)
CC TYPE
3) Pseudo IBSS: Reserved (Reserved)
1
CHANNEL Channel number 0
0) WEP is not used.
1) 64 bit WEP key
WEP TYPE
2) 128 bit WEP key
0
KEY ID Number of the Key to be Used 0
Authentication For setting EAP-MD5 OFF

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zSetting via ezSerialConfig utility
Operate ezTCP in serial configuration mode to utilize ezSerialConfig. Follow the
sequence as described below.
1. Run ezSerialConfig program in the PC.
2. With no LAN card inserted, connect ezTCP and the PC by a serial cable and apply
power.
3. Select the COM port of the PC to which the cable is connected and press the
[READ] button.
4. Configure the environmental parameters of ezSerialConfig. At this time, you should
configure wireless LAN-related items. (The other items may be configured with
ezConfig program after the wireless LAN is inserted into ezTCP.)
5. Push the [WRITE] button in the ezSerialConfig window.
3.2. Setting the IP Address and Environment Values
To establish TCP/IP communication, the user must set fields relating to the IP address as
well as fields relating to the serial port (baud-rate, data bit length, parity bit, flow control,
etc.) in the ezTCP.
The user can set the fields relating to IP address and the serial port through the ezConfig
(a configuration utility through the network) or AT command in ATC mode. To set the
fields, the user also may temporarily set the IP address by the ARP method using the
MAC address (hardware address).
Items Description
LOCAL IP
ADDRESS ezTCP IP Address
SUBNET
MASK Subnet Mask
GATEWAY Gateway
LOCAL PORT Listening Port Number in Server
Mode
PEER IP
ADDRESS peer IP Address in Client Mode
IP Address Fields
PEER PORT Port Number in Client Mode

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BAUD RATE Baud Rate (bps)
DATA BITS Data Bit Length
PARITY Parity
Serial Port
FLOW CTRL Flow Control
Communication
Mode MUX TYPE Communication Mode
WATER
MARK
Minimum Number of Bytes to
Attempt Connection/Transmission
Connection/
Connection
Termination Event TIMEOUT Connection Time Out
EZCFG ezConfig Function enable/disableUsing Configuration
Method ARP ARP function eanble/disable
Floating IP DHCP DHCP(Dynamic Host Configuration
Protocol)
Telnet Password PASSWORD Password when Performing Remote
Login through Telnet
3.2.1. ezConfig
The basic environment information of ezTCP can be configured through DHCP, ARP,
and ezConfig. This section takes an example of using ezConfig, which is a configuration
program via wired/wireless LAN. For the other configuration modes, see the following
sections. ezConfig can run on Microsoft Windows platform but may not operate on
some of the existing operating systems. The screen below shows the initial screen of
ezConfig:
ezConfig broadcast UDP data to communicate ezTCPs, so it can be used in local
network(If there is a gateway between ezTCP and PC, then ezConfig doesn’t work.)

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Each button on ezConfig functions as follows:
This button is used to search for all of the network-attached ezTCPs. The
search results will be displayed on the MAC ADDRESS LIST box and you can select an
item using a mouse or cursor as required. The value displayed on the box indicates the
MAC ADDRESS of each ezTCP. The selected setup value of ezTCP will be displayed
on the right side.
You can see only the ezTCP configuration values if you press this button after
entering the 6-digit hexadecimal number printed on the ezTCP main body in the MAC
ADDRESS box. It is useful when there are too many ezTCPs attached to the network to
search for one from the LIST box.
This button is used to save the changed value in ezTCP after modifying the
configuration. Make sure not to press this button during operating ezTCP since ezTCP
will automatically be reset right after its environment setup value is saved. Otherwise, it
may cause malfunction.
This button is used to close ezConfig. You can also close it by pressing ESC
key on the keyboard.
ezTCP provides User Authentication function to prevent an unwanted person
from modifying the configuration. The authentication process is performed through the
password string verification. When entering or changing the password strings, you can
use this button. Changing the ezTCP configuration details if a password has been
entered requires the proper password to be entered in the PASSWORD field.
This button is used to read a dynamic variable value during operating ezTCP.
Pressing this button will display a new window, where the time-elapsed after the power

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is on, the current IP address, and the data throughput of the serial port are indicated.
Double-clicking each item on the MAC ADDRESS LIST will carry out the same
function.
ezConfig can be used to change the IP address related items, the serial port setup value,
the serial port operation mode, and how to setup ezTCP. This section describes these
functions briefly. For more information, see the following sections.
The following example shows how to read and change ezTCP's basic functions. Try
changing ezTCP setup value according to the following sequence:
- When the ezTCP power is turned on and the LAN cable is connected correctly,
pressing [PROBE] or [READ] button will display the following window:
- If a network-attached ezTCP is detected, the following message will be displayed. If a
message pops up indicating that there is no response from ezTCP, check that the power
is turned on and the cable is connected correctly, then try pressing [PROBE] or [READ]
button.
- If more than one ezTCP are detected, ezTCP's MAC ADDRESS will be displayed in
the [MAC ADDRESS LIST] box on ezConfig. Check if the MAC ADDRESS displayed
in the [MAC ADDRESS LIST] window corresponds to that printed on ezTCP main
body. The following screen shows this process: