Sollae Systems EZL-200L User Manual

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EZL-200L User’s Manual

Version 1.4

Sollae Systems

- 2 -

To all residents of the European Union

Important environmental information about this product

This symbol on this unit or the package indicates that disposal of this unit after its

lifecycle could harm the environment. Do not dispose of the unit as unsorted municipal

waste; it should be brought to a specialized company for recycling. It is your responsibility to

return this unit to your local recycling service. Respect your local environmental regulation. If in

doubt, contact your local waste disposal authorities.

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- Table of Contents -

1. OVERVIEW..................................................................................................................... - 5 -

1.1. O

VERVIEW ......................................................................................................................- 5 -

1.2. C

OMPONENTS..................................................................................................................- 6 -

1.3. S

PECIFICATIONS ..............................................................................................................- 6 -

1.4. I

NTERFACE ......................................................................................................................- 7 -

1.4.1. Power ............................................................................................................................ - 7 -

1.4.2. Dsub Connector ............................................................................................................- 7 -

1.4.3. LEDs.............................................................................................................................. - 8 -

1.4.4. Ethernet Interface.......................................................................................................... - 9 -

2. INSTALLATION AND TEST RUN ............................................................................. - 10 -

2.1. I

NSTALLATION METHOD................................................................................................- 10 -

2.1.1. Checking the Communication Environment................................................................ - 10 -

2.1.2. Connecting to the Network.......................................................................................... - 10 -

2.1.3. Configuring the Environmental Variables................................................................... - 11 -

2.2. T

EST RUN......................................................................................................................- 11 -

2.2.1. Changing PC IP Address............................................................................................. - 11 -

2.2.2. Installation EZL-200L................................................................................................. - 11 -

2.2.3. Configuring EZL-200L................................................................................................ - 11 -

2.2.4. Connecting to the PC Serial Port................................................................................ - 12 -

2.2.5. Communication Test .................................................................................................... - 12 -

3. CONFIGURING IP ADDRESS AND ENVIRONMENTAL VARIABLES .............. - 13 -

3.1. IP

ADDRESS AND ENVIRONMENTAL VARIABLES ............................................................- 13 -

3.2. C

ONFIGURATION BY EZCONFIG .....................................................................................- 17 -

3.2.1. ezConfig Menu ............................................................................................................ - 17 -

3.2.2. Example configuration of ezConfig (LOCAL)............................................................. - 19 -

3.2.3. Example configuration of ezConfig (REMOTE).......................................................... - 21 -

3.3. AT

COMMAND...............................................................................................................- 22 -

3.4. S

ETTING IP ADDRESS-RELATED ITEMS BY DHCP.........................................................- 22 -

3.5. S

ETTING IP ADDRESS-RELATED ITEMS BY PPPOE ........................................................- 22 -

4. OPERATION MODE.................................................................................................... - 23 -

4.1. O

PERATION MODE OVERVIEW ......................................................................................- 23 -

4.1.1. Overview ..................................................................................................................... - 23 -

4.2. H

OW TO INITIATE EACH OPERATION MODE..................................................................- 23 -

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4.2.1. How to Initiate Normal Mode ..................................................................................... - 23 -

4.2.2. How to Initiate ISP Mode............................................................................................ - 23 -

4.2.3. Comparison of Operation Modes................................................................................ - 23 -

4.3. N

ORMAL COMMUNICATION MODE................................................................................- 23 -

4.4. ISP

MODE .....................................................................................................................- 24 -

5. NORMAL COMMUNICATION MODE .................................................................... - 26 -

5.1. T2S(TCP

TO SERIAL) ...................................................................................................- 26 -

5.2. AT C

(AT COMMAND)....................................................................................................- 28 -

5.3. COD

(CONNECT ON DEMAND) .....................................................................................- 30 -

5.4. U2S...............................................................................................................................-

32 -

6. ATC MODE ................................................................................................................... - 34 -

6.1. O

VERVIEW ....................................................................................................................- 34 -

6.1.1. AT command format .................................................................................................... - 34 -

6.2. B

ASIC AT COMMAND SET (EXAMPLE: ATA , AT D ETC.) ................................................- 34 -

6.3. E

XTENDED AT COMMANDS (EXAMPLE: AT+ P L I P ETC.) ...............................................- 35 -

6.4. O

NLINE STATE AND ONLINE COMMAND STATE .............................................................- 35 -

6.4.1. Changing Online State to Online Command State ...................................................... - 35 -

6.4.2. Changing Online Command State to Online State ...................................................... - 36 -

6.5. E

XAMPLE OF CONFIGURATION WITH AT COMMAND......................................................- 36 -

6.6. E

XAMPLE OF TCP CONNECTION ...................................................................................- 36 -

6.6.1. Example of Active Connection .................................................................................... - 36 -

6.6.2. Example of passive Connection................................................................................... - 37 -

6.7. E

XAMPLE OF TCP DISCONNECTION ..............................................................................- 37 -

6.7.1. Example of active disconnection ................................................................................. - 37 -

6.7.2. Example of passive disconnection............................................................................... - 37 -

7. TECHNICAL SUPPORT, WARRANTY, AND NOTES ON OPERATION............. - 38 -

7.1. T

ECHNICAL SUPPORT ....................................................................................................- 38 -

7.2. W

ARRANTY ..................................................................................................................- 38 -

7.2.1. Refund ......................................................................................................................... - 38 -

7.2.2. Free Repair Services ................................................................................................... - 38 -

7.2.3. Charged Repair Services............................................................................................. - 38 -

7.2.4. Notes on Operation ..................................................................................................... - 38 -

8. REVISION HISTORY.................................................................................................. - 40 -

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1. Overview

1.1. Overview

Along with the development of the Internet, the demand for data communication

functions has increased recently. Data communication over the Internet requires using

TCP/IP, the Internet communication protocol. That is to say, in order to connect a

system to the Internet, TCP/IP protocol must be implemented. It is possible to

implement TCP/IP by directly implementing the protocol, porting public TCP/IP, or

using Operating System (OS). However, all these methods impose burdens on the

developer in time, cost, and technology.

ezTCP series, a Serial ↔ TCP/IP protocol converter product group of Sollae Systems,

enables you to use TCP/IP communication (the Internet communication) function simply

by “connecting the cable to a serial port”. ezTCP sends data from the serial port to the

Internet network after TCP/IP processing, and vice versa.

EZL-200L in ezTCP product group is a product that provides TCP/IP communication

through Ethernet. In other words, like other ezTCP products, EZL-200L sends data from

the serial port to the LAN after TCP/IP processing and vice versa.

It provides DHCP and PPPoE functions as well as TCP/UDP/IP, so that it can be applied

to the cable network and the xDSL network.

EZL-200L is low-cost TCP/IP solution that is integrated highly and optimally in a small

hardware.

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1.2. Components

z EZL-200L Body

z 5V Power Adopter (Option)

z RS232C cable for PC connection (Option)

z Cross-over Ethernet cable (Option)

1.3. Specifications

Input Voltage

5V (±10%)

Power

Current 78mA typical

Dimension 136mm x 83mm x 29mm

Weigh t About140g

Serial 9pin Dsub male

Interface

Network 10- Base T

Serial Port RS232 (1200bps ~ 115200bps)

Network 10Base-T

Protocols TCP, UDP, IP, ICMP, ARP, DHCP, PPPoE

T2S TCP Server Mode

COD TCP Client Mode

AT C

TCP Server/Client Mode

(AT command emulation)

Communicat-

ion Mode

U2S UDP

ezConfig Configuration utility via LAN

ezterm Socket test utility

Utilities

hotflash Firmware download utility via TFTP

) You can download free utilities and firmware from http://www.eztcp.com.

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1.4. Interface

1.4.1. Power

DC 5V is used for EZL-200L and the specification is below:

1.4.2. Dsub Connector

The connector of serial port is 9 pin Dsub male. The specification is below:

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z RS-232

# name description level Dir. Etc.

1 -

- -

2 RXD

Receive Data RS232

Input

Mandatory

3 TXD

Transmit Data RS232

Output

Mandatory

4 DTR

Data Terminal Ready -

DTR/DSR

loopback jumper

5 GND

Ground Ground

Mandatory

6 DSR

Data Set Ready -

DTR/DSR

loopback jumper

7 RTS

Request To Send RS232

Output

Optional

8 CTS

Clear To Send RS232

Input

Optional

9 -

- -

Pin 4 and pin 6 will be loop-backed when JP2 is on. JP2 is inside of EZL-200L.

1.4.3. LEDs

EZL-200L has 5 LEDs.

Each LED functions as follows:

Name Meaning Color LED Status Description

PWR Power Red ON

Power is supplied

Blinking for

a second

IP is allocated but TCP connection is

not established

Blinking 4

times/sec

IP is not allocated

TCP connection is established

STS Status Yellow

Rapidly

Blinking

ISP Mode

LINK

LAN

Link

Green

Connected to ethernet

RXD LAN Rx Yellow

Blinking

There are data on the LAN

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TXD LAN Tx Green

Blinking

Packets are being transmitted to

Ethernet

1.4.4. Ethernet Interface

The interface of EZL-200L is 10Base-T. 1:1 cable should be used for connection with a HUB

and cross-over cable should be used for connection with PC directly without any HUB.

Each piece of Ethernet equipment has unique hardware addresses, and EZL-200L also

has factory-set hardware address (which is called MAC address).

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2. Installation and Test Run

2.1. Installation Method

You can install EZL-200L in the following steps:

Title Item Sub-item Description

IP address environment

3.1.

Serial port settings

3.1.

1. Checking the communication environment

Check items

Application program to be used

2. Connecting to the network

Check method

Check if LINK LED is ON.

1.4.4.

Set by ezConfig, a utility program for configuration through the network.

3.2.

Configuration

method

Set by AT commands in ATC mode

IP address related items

3.1.

Serial port related items

3.1.

3. Configuring the environmental variables

Configuration items

Communication mode (Decided depending on application program)

4. Application to the field

2.1.1. Checking the Communication Environment

Before installing EZL-200L, check the network environment where EZL-200L is to be

installed, including the followings matters:

z IP address environment (local IP, subnet mask, gateway, etc.)

z Serial port items of the equipment to which EZL-200L is going to be

connected (baud rate, data bit, parity, stop bit)

z Application program protocol to be used (TCP/UDP, server/client, SSL, etc.)

z For application program protocol to be used, see “5. Normal Communication

Mode”.

2.1.2. Connecting to the Network

Connect power to EZL-200L, and connect EZL-200L directly to the Ethernet port of the

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PC where test is to be performed with a cross-over Ethernet cable.

2.1.3. Configuring the Environmental Variables

When network connection is completed, configure the environmental variables such as

IP address related items, serial port related items, and communication mode related

items through the LAN using “ezConfig,” the environmental variable configuration

program.

) For environmental variable configuration, see “3. Setting IP Address and

Environmental Variables.”

2.2. Test Run

You can perform test run according to the following orders. The test run described here

is based on the assumption that the IP address of the PC is set to 10.1.0.2.

2.2.1. Changing PC IP Address

You can change the IP address of your 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. Installation EZL-200L

Connect the supplied RS232 cable between your PC and EZL-200L, the LAN cable to

the hub to which the PC is connected or directly to the PC with a cross-over cable, and

the supplied EZL-200L power adapter to EZL-200L for power supply. If the LAN cable

has been correctly connected when power is supplied, LINK LED turns on.

2.2.3. Configuring EZL-200L

Configure EZL-200L setting using ezConfig, the ezTCP configuration program, as

follows.

Run ezConfig, and click [Search ezTCP] button in the ezConfig window. And, ezConfig

program will search all ezTCPs on the local network.

When ezTCP is searched, MAC address of the ezTCP is displayed on the [Search List]

window (The MAC address is indicated at the bottom of the product case).

Select the corresponding MAC address, and set the same as shown in the following

figure and click [Write] button to save the settings.

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2.2.4. Connecting to the PC Serial Port

Connect the serial port of your PC and that of EZL-200L, using the supplied serial

communication cable. Then, run serial communication program such as Hyper Terminal

and Teraterm. When the program is run, select the same serial port values as those set to

EZL-200L [19200bps, data bit: 8 bits, stop bit: 1 bit, no parity], which will finish the

preparation for serial communication.

2.2.5. Communication Test

When the preparation for serial communication is finished, enter the following in the

DOS window on your PC, to connect to TCP through Telnet program.

"Telnet 10.1.0.1 1470"

When TCP connection succeeds, STS LED of EZL-200L turns ON.

When the STS LED turns ON, enter “123” on the Telnet window, and "123" will appear

on the hyper terminal. Enter “ABC” on the hyper terminal, and “ABC” will appear on

the Telnet window. Otherwise, communication test fails.

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3. Configuring IP Address and Environmental

Variab l e s

3.1. IP Address and Environmental Variables

For TCP/IP communication, you must set IP address related items. In addition, you have

to set serial port related items (baud-rate, data bit length, parity bit, flow control, etc) to

EZL-200L.

You can set the IP address and the serial port related items by using ezConfig, the

supplied configuration utility which allows you to configure your EZL-200L over the

network, or by using AT commands in ATC mode.

Item Description

Local IP

Address

IP address of EZL-200L

Subnet Mask Subnet mask

Gateway IP

Address

IP address of gateway

Local Port

Port number for waiting to be

connected in Server mode

Port number for waiting UDP data

Peer IP Address

IP address to connect in Client mode

IP address to send data in UDP mode

Peer Port

Port number to connect in Client mode

Port number to send data in UDP mode

IP Address-related

Items

Permitted IP

Address

Permitted IP address in server mode.

Baudrate Serial Port Speed(bps)

Data bits Data bit length

Parity Parity

Stop bit Stop bit

Serial Port

Flow Control Flow control

Communication Mode ezTCP Mode Communication Mode

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Conn. Byte

Minimum number of bytes attempting

to connect/transmit

Connect/Disconnect

Event

Timeout Limit time to keep connection

ezConfig Enable ezConfig function.

Remote Search

Remote configuration function with

UDP unicast

Password

Select between Telnet password and

ezConfig password.

Configuration Method

Used

ARP Enable IP setting by ARP.

DHCP

Select to receive EZL-200L IP address

as DHCP.

PPPoE

Select to receive EZL-200L IP address

as PPPoE.

Dynamic IP Address

PPPoE ID &

Password

ID and password to be used for PPPoE

z Local IP Address

IP address of EZL-200L. If you set DHCP or PPPoE is set, an IP address is

automatically allocated. So, you cannot set the local IP address.

z Subnet Mask

Sets subnet mask of the network where EZL-200L is installed

z Gateway IP Address

Sets the gateway IP address of the network where EZL-200L is installed.

z Permitted IP Address

It is a permitted IP address of foreign host when EZL-200L operates as a server. The

only host that is written in this item can connect to EZL-200L. If Permitted IP Address is

0.0.0.0, all hosts can connect to the EZL-200L.

z Local Port

Port number, which is used as TCP port number waiting to be connected when EZL-

200L operates as TCP server or as the port number waiting for UDP data when it

operates in U2S communication mode.

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z Peer Port

Local port number of the server to connect when EZL-200L operates as TCP client or to

transmit UDP data when it operates as U2S

z Baudrate

Selects a serial port speed (1200 bps  115200bps).

z Data bits

Selects a data bit length of the serial port (7 bits or 8 bits)

z Parity

Select a parity bit of the serial port (None, Even, Odd).

z Stop bit

Selects a stop bit length of the serial port (1 bit, 2 bits).

z Flow Control

Selects flow control for the serial port (None, RTS/CTS, Xon/Xoff).

z ezTCP Mode

Selects the communication mode of EZL-200L (T2S, ATC, COD, U2S).

z Conn. Byte

Decides a point of time to start connection when EZL-200L operates as COD. EZL-200L

starts to connect to the host (Peer IP Address and Peer Port) of the designated host upon

receiving as many data as specified by [Conn. Byte] from the serial port.

z Block(Byte)

Decides the size of UDP packet to be sent at a time when EZL-200L operates as U2S.

z Timeout

When EZL-200L operates as TCP such as T2S, COD and ATC, connection is closed if

data communication is not continued as long as the time set to this item unless this item

is set to 0 (unit: second)

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z Interval

When EZL-200L operates as UDP like U2S, it transmits data in blocks by gathering data

for the time set to this item (unit: 10ms)

z ezConfig

You can use ezConfig utility only this item is enabled.

(If this item is not enabled, you cannot set EZL-200L using ezConfig. Therefore, it is

recommended to enable this all the times.)

To enable ezConfig, set this item in ISP mode.

z Remote Search

If this item is set, EZL-200L in other network can be configured by ezConfig. Remote

Search function is performed in the [REMOTE] tab.

z Password

Sets a password for configuring with ezConfig. If user forgot the password, the user can

delete the password in ISP mode.

z ARP

When this item is selected, EZL-200L uses the destination IP address of the first packet

coming to its MAC address as its own IP address temporarily. This item should be set in

DHCP environment if required.

z DHCP

Set to receive an IP address as DHCP.

z PPPoE

Set to receive an IP address as PPPoE.

z PPPoE ID & Password

Sets ID and password used for PPPoE.

EZL-200L uses maximum 32 byte for saving an ID and 8 bytes for a password.

z Comment

Stores maximum 32 byte user comment on the product. This item helps the user

distinguish each EZL-200L more easily.

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3.2. Configuration by ezConfig

3.2.1. ezConfig Menu

The basic environmental variables (IP address related items, serial port items, and etc.) can

be set by ezConfig which is an integrated management tool for Windows.

ezConfig is operated in Microsoft Windows(Windows 98, 98 SE, 2000 Pro, ME, XP

Pro/Home). Following is the screen shot of ezConfig which is just launched.

√ ezConfig can set not only EZL-200L’s environmental variables but also other ezTCP

series.

ezConfig configures ezTCP by Ethernet, there are two way to configure.

The first way is UDP broadcast. When using UDP broadcast, user can search all ezTCPs in

the same network without knowledge of IP address. But beware that it can be used in the

‘same network’. This method performed in the [LOCAL] tab of ezconfig version above 4.0.

The second way is UDP unicast that communicates by IP address. As it configured with IP

address, EZL-200L is configured any place if they are connected with network. This method

performed in the [REMOET] tab of ezconfig version above 4.0.

(ezConfig below version 4.0 supports only UDP broadcast)

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LOCAL REMOTE

communication UDP broadcast UDP unicast (port: 50005)

search With MAC address with IP address

location

In the same network with EZL-

200L

Can be used in a different

network

The functions of ezConfig’s buttons are followed:

This button is used to search for all of the network-attached ezTCPs.

The search results will be displayed on the [Search 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.

[LOCAL]tab:.

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.

[REMOTE] tab:

Reading environmental variables with the IP address.

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.

Terminating ezConfig.

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

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has been entered requires the proper password to be entered in the PASSWORD field.

√ If you forget the password, erase or reenter in ISP Mode.

This button is used to read a dynamic status during operating ezTCP.

Pressing this button will display a new window, where the time-elapsed after the power

is on, the current IP address, and the data throughput of the serial port are indicated.

Double-clicking each item on the [Search List] will carry out the same function.

3.2.2. Example configuration of ezConfig (LOCAL)

ezConfig can be used to change the IP address related items, the serial port setup value,

the serial port operation mode. 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

z When the ezTCP power is turned on and the LAN cable is connected correctly,

pressing [Search] or [Read] button will display the following window:

z 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 [Search] or [Read] button.

√ It is impossible to use ezConfig, if EZCFG check box is disabled. This function can be

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re-enabled in ISP mode.

z If more than one ezTCP are detected, ezTCP's MAC ADDRESS will be

displayed in the [Search List] box on ezConfig. Check if the MAC ADDRESS

displayed in the [Search List] window corresponds to that printed on ezTCP

main body. The following screen shows this process:

Following is the screenshot when ezTCPs were found.

z Set [ezTCP Mode], [Local IP Address], [Local Port], and serial port related items.

After setting press [Write] button. If there is any error during writing process, check

the LAN between PC and EZL-200L.

z Check if the set IP address is correct with ping command in DOS prompt.

Following is the message if the IP address is OK. If "Request timed out" message is

shown, check IP address.

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C:\>ping a.b.c.d

Pinging a.b.c.d with 32 bytes of data:

Reply from a.b.c.d: bytes=32 time=1ms TTL=64

√ IP address, subnet mask, and gateway IP address of both PC and EZL-200L should be

correct to succeed in ping test.

3.2.3. Example configuration of ezConfig (REMOTE)

z Input the IP address of EZL-200L in IP address field in the [REMOTE] tab,

and press [Read] button. Then following window will be appeared.

z If the EZL-200L is found, the following will be shown.

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z Configure variables and press [Write] button.

3.3. AT command

In ATC mode, the user can set environment variables through the serial port using AT

command.

) For more information, See “6. ATC Mode”.

3.4. Setting IP Address-related Items by DHCP

Under environment with a network operating a DHCP server, DHCP protocol allows

the user to automatically set the IP address, subnet mask, gateway, and name server of

ezTCP. Using DHCP automatic setup function requires the user to check [DHCP] item

on ezConfig. Note that the user may have to check [ARP] item according to the type of

DHCP servers.

3.5. Setting IP Address-related Items by PPPoE

PPPoE is used in most ADSL and VDSL. To use PPPoE function, PPPoE function should be

enabled and PPPoE ID and PPPoE password should be configured. The local IP address of

EZL-200L is assigned automatically in PPPoE environment.

√ Some ADSL or VDSL modem use DHCP. Please contact your ISP (Internet Service

Provider).

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4. Operation Mode

4.1. Operation Mode Overview

4.1.1. Overview

EZL-200L can operate in one of two modes (normal and ISP modes). Normal mode is

ordinary data communication mode; and ISP mode is used to download EZL-200L

firmware through the Ethernet(TFTP).

4.2. How to Initiate Each Operation Mode

4.2.1. How to Initiate Normal Mode

Normal mode is a mode in which EZL-200L performs its original functions. If you do

not make any change in the default setting, EZL-200L usually operates in normal mode.

) For more information, see “5. Normal Communication Mode.”

4.2.2. How to Initiate ISP Mode

Supply power to EZL-200L with pressing the ISP button on the back of the product, and

EZL-200L operates in ISP mode

. During ISP mode, the STS LED of EZL-200L will be

blink rapidly.

4.2.3. Comparison of Operation Modes

The following table is the comparison of the above described operation modes.

Mode How to Initiate Description Serial Port

normal -

Normal data communication mode

T2S, ATC, COD, U2S

User setting

ISP

Supply power

with pressing the

button or press

the button about

2 seconds

Download firmware through the

ethernet

19200bps,N,8,1



4.3. Normal Communication Mode

Normal communication mode is suitable for the purpose of using EZL-200L.

Normal communication mode can be classified into four modes – T2S, ATC, COD, and

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U2S – each of which is described in the following table.

Communication

Mode

Protocol Connection

Need for User

Equipment

Software

Modification

Configuration of

Environmental

Variables through

Serial Port

Topology

T2S TCP

Passive

Connection

Not needed Impossible 1:1

ATC TCP

Active/Passive

Connection

Needed Possible 1:1

COD TCP

Active

Connection

Not needed Impossible 1:1

U2S UDP No Connection Not needed Impossible N:M

TCP protocol requires connection process. The connection is always established as 1:1

connection. At this time, the host waiting for connection (passive connection) is called a

server and the one attempting to connect (active connection) is called a client.

On the other hand, UDP communicates by block unit without connection process. As UDP

does not require connection, numbers of hosts can communicate at the same time.

) For more information on communication modes, refer to the next chapter.

4.4. ISP Mode

In ISP mode, you can download the latest firmware (EZL-200L operation software)

provided by our company.

The following section describes how to download firmware in ISP mode.



Supply power to EZL-200L with pressing the ISP button on the back of the

product. Then, the STS LED will be blink rapidly.

z Run hotflash that is supplied by us.

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z Select a firmware in the [FILE] menu, and input the IP address of EZL-200L

and press [SEND] button. Then the firmware will be transferred by Ethernet.

z After completion, a message that informs the firmware was downloaded

successfully. And EZL-200L reboots automatically and run in Normal Mode. In

Normal Mode, STS LED is blink every 1 second.

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5. Normal Communication Mode

5.1. T2S(TCP To Serial)

When a host connects to predefined local port, the EZL-200L accepts a TCP

connection. When the EZL-200L accepts TCP connection, then the TCP connection is

established. After connection is established, TCP/IP processing is performed on the

data coming to the serial port, which is then transmitted to the remote host. And the

TCP/IP data coming from the remote host is TCP/IP-processed and transmitted to the

serial port to establish data communication. (Data coming to the serial port before TCP

connection is established will be ignored.)

To limit the peer host, user should set [Peer IP Address]. The only pre-defined host can be

accessible. If [Permitted IP Address] is 0.0.0.0, any host can connect to EZL-200L.

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Set the following for T2S mode:

Item Description

Local IP Address IP address of EZL-200L

Subnet Mask Subnet mask

Gateway IP

Address

IP address of gateway

Local Port

Port number for waiting to be

connected in Server mode

IP Address Relate

Items

Permitted IP

Address

Permitted host to connect

(if set to 0.0.0.0, any host can connect)

Baudrate Serial port speed (bps)

Data bits Data bit length

Parity Parity

Stop bit Stop bit

Serial Port

Flow Control Flow control

Communication

Mode

ezTCP Mode Communication Mode (T2S(0))

Disconnection Timeout Limit time to keep connection

ezConfig Enable ezConfig function.

Configuration

Method

Password ezConfig password.

DHCP

Select to receive EZL-200L IP address

as DHCP.

Dynamic IP

PPPoE

Select to receive EZL-200L IP address

as PPPoE.

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5.2. ATC (AT Command)

In ATC mode, the user can control the EZL-200L in a similar way to controlling the

modem using AT command. In ATC mode, only a TCP connection is possible and both

the server and the client can be configured.

In ATC mode, the AT command allows the user to set environment variables including

the IP address and control TCP connection and

disconnection.

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Set the following for ATC mode.

Item Description

Local IP Address

IP address of EZL-200L

Subnet Mask

Subnet mask

Gateway IP

Address

IP address of gateway

Local Port

Port number for waiting to be connected in Server mode

Peer IP Address

Peer IP address to connect

IP Address

Relate Items

Peer Port

Peer port number to connect

Baudrate

Serial port speed (bps)

Data bits

Data bit length

Parity

Stop bit

Serial Port

Flow Control

Flow control

Communication

Mode

ezTCP Mode

Communication mode(ATC(1))

Disconnection

Timeout

Limit time to keep connection

ezConfig Enable ezConfig function.

Configuration

Method

Password ezConfig password.

DHCP

Select to receive EZL-200L IP address as

DHCP.

Dynamic IP

PPPoE

Select to receive EZL-200L IP address as

PPPoE.

) See “6. ATC Mode.”

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5.3. COD (Connect On Demand)

In COD mode, the EZL-200L functions as a client.

When data of the pre-specified size [CONN BYTE] comes to the serial port, the EZL-

200L attempts a TCP connection to the TCP port [PEER PORT] of the preset host IP

[PEER IP ADDRESS]. If the remote host accepts the TCP connection, TCP connection

will be established. Data coming to the serial port after connection establishment is

TCP/IP-processed and transmitted to the remote host. And, data coming from the

remote host is TCP/IP-processed and transmitted to the serial port for data

communication.

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Set the following for COD mode.

Item Description

Local IP Address

IP address of EZL-200L

Subnet Mask

Subnet mask

Gateway IP

Address

IP address of gateway

Peer IP Address

Peer IP address to connect

IP Address

Sollae Systems EZL-200L User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual