Sollae Systems CSE-H20 User manual

Sollae Systems Co., Ltd.
http://www.ezTCP.com
2Ports Serial Device Server
CSE-H20 User Manual
Version 2.7

CSE-H20 User Manual Ver. 2.7
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This symbol, found on your product or on its packaging, indicates that this
product should not be treated as household waste when you wish to dispose
of it. Instead, it should be handed over to an applicable collection point for the
recycling of electrical and electronic equipment. By ensuring this product is
disposed of correctly, you will help prevent potential negative consequences to the
environment and human health, which could otherwise be caused by inappropriate disposal
of this product. The recycling of materials will help to conserve natural resources. For more
detailed information about the recycling of this product, please contact your local city
office, household waste disposal service or the retail store where you purchased this
product.
※This equipment obtained certification by using 1.5M serial cable.

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Contents
Contents............................................................................................................................................- 2 -
1Overview ..................................................................................................................................- 5 -
1.1 Overview ................................................................................................................................................................- 5 -
2Specifications ..........................................................................................................................- 6 -
2.1 Components.........................................................................................................................................................- 6 -
2.2 Specifications .......................................................................................................................................................- 7 -
2.3 Interface .................................................................................................................................................................- 8 -
2.3.1 Serial Ports (RJ45).....................................................................................................................................- 8 -
2.3.2 Ethernet Interface .................................................................................................................................. - 10 -
2.3.3 Power........................................................................................................................................................... - 10 -
2.3.4 System LEDs............................................................................................................................................. - 11 -
2.3.5 ISP Switch.................................................................................................................................................. - 11 -
3Installation and Test Run ................................................................................................... - 12 -
3.1 Installation Method........................................................................................................................................ - 12 -
3.1.1 Checking the Communication Environment ............................................................................. - 12 -
3.1.2 Connecting to the Network.............................................................................................................. - 13 -
3.1.3 Configuring the Environmental Variables................................................................................... - 13 -
3.2 Test Run............................................................................................................................................................... - 13 -
3.2.1 Changing PC IP Address .................................................................................................................... - 13 -
3.2.2 Installing CSE-H20................................................................................................................................. - 13 -
3.2.3 Configuring CSE-H20........................................................................................................................... - 14 -
3.2.4 Communication Test............................................................................................................................. - 14 -
4Configuring IP Address Variables..................................................................................... - 18 -
4.1 IP Address and Environmental Variables ............................................................................................. - 18 -
4.2 Configuring with ezManager..................................................................................................................... - 18 -
4.2.1 ezManager ................................................................................................................................................ - 18 -
4.2.2 Buttons of ezManager......................................................................................................................... - 19 -
4.2.3 Parameters of ezManager.................................................................................................................. - 19 -
4.2.4 Matters to be attended to ................................................................................................................ - 20 -
4.3 AT command..................................................................................................................................................... - 21 -
4.4 Notify IP Change............................................................................................................................................. - 21 -
4.4.1 DDNS (Dynamic Domain Name System).................................................................................... - 21 -
4.4.2 TCP/UDP..................................................................................................................................................... - 21 -

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5Operation Mode .................................................................................................................. - 22 -
5.1 Operation Mode Overview......................................................................................................................... - 22 -
5.1.1 Overview.................................................................................................................................................... - 22 -
5.2 How to Initiate Each Operation Mode ................................................................................................. - 22 -
5.2.1 How to Initiate the Normal Mode................................................................................................. - 22 -
5.2.2 How to Initiate the Serial Configuration Mode ...................................................................... - 22 -
5.2.3 How to Initiate the ISP Mode.......................................................................................................... - 22 -
5.2.4 Comparison of Operation Modes.................................................................................................. - 22 -
5.3 Normal Communication Mode ................................................................................................................ - 23 -
5.4 Serial Configuration Mode ......................................................................................................................... - 23 -
5.5 ISP Mode ............................................................................................................................................................ - 24 -
5.5.1 Upgrading Firmware............................................................................................................................. - 24 -
6Normal Communication Mode ......................................................................................... - 25 -
6.1 T2S –TCP Server............................................................................................................................................. - 25 -
6.1.1 TCP Connection...................................................................................................................................... - 25 -
6.1.2 Serial Data before the TCP Connection ...................................................................................... - 25 -
6.1.3 Data Transmission ................................................................................................................................. - 26 -
6.1.4 Disconnection.......................................................................................................................................... - 26 -
6.2 COD –TCP Client............................................................................................................................................ - 27 -
6.2.1 Serial Data before the TCP Connection ...................................................................................... - 27 -
6.2.2 Data Transmission ................................................................................................................................. - 27 -
6.2.3 Disconnection.......................................................................................................................................... - 28 -
6.2.4 DNS.............................................................................................................................................................. - 28 -
6.3 ATC –AT Command....................................................................................................................................... - 29 -
6.3.1 Key parameters....................................................................................................................................... - 29 -
6.3.2 Examples.................................................................................................................................................... - 30 -
6.4 UDP ....................................................................................................................................................................... - 33 -
6.4.1 Key parameters....................................................................................................................................... - 33 -
6.4.2 Examples.................................................................................................................................................... - 34 -
7Security Protocols & Option ............................................................................................. - 36 -
7.1 SSL ......................................................................................................................................................................... - 36 -
7.1.1 SSL (Secure Socket Layer).................................................................................................................. - 36 -
7.1.2 How to set the SSL on CSE-H20.................................................................................................... - 36 -
7.1.3 Restriction.................................................................................................................................................. - 37 -
7.2 SSH ........................................................................................................................................................................ - 38 -
7.2.1 SSH (Secure Shell) ................................................................................................................................. - 38 -
7.2.2 How to set the SSH on CSE-H20................................................................................................... - 38 -

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7.2.3 Restriction.................................................................................................................................................. - 39 -
7.3 ezTCP Firewall................................................................................................................................................... - 40 -
8Checking & Debugging...................................................................................................... - 41 -
8.1 Telnet .................................................................................................................................................................... - 41 -
8.1.1 Telnet Login.............................................................................................................................................. - 41 -
8.1.2 Commands................................................................................................................................................ - 41 -
8.2 Status on ezManager .................................................................................................................................... - 43 -
8.2.1 Status of the CSE-H20......................................................................................................................... - 43 -
8.2.2 Closing TCP connection by the ezManager.............................................................................. - 43 -
8.3 Remote Debugging........................................................................................................................................ - 44 -
8.4 Sending MAC Address.................................................................................................................................. - 44 -
9Related material................................................................................................................... - 45 -
9.1 Technical Documents .................................................................................................................................... - 45 -
9.2 Smart phone application............................................................................................................................. - 45 -
10 Technical Support and Warranty...................................................................................... - 46 -
10.1Technical Support ........................................................................................................................................... - 46 -
10.2Warranty.............................................................................................................................................................. - 46 -
10.2.1 Refund......................................................................................................................................................... - 46 -
10.2.2 Free Repair Services ............................................................................................................................. - 46 -
10.2.3 Charged Repair Services..................................................................................................................... - 46 -
11 Precaution and Exemption from Liability....................................................................... - 47 -
11.1Precaution........................................................................................................................................................... - 47 -
11.2Exemption from Liability.............................................................................................................................. - 48 -
11.2.1 English version........................................................................................................................................ - 48 -
11.2.2 French version......................................................................................................................................... - 48 -
12 Revision History................................................................................................................... - 51 -

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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.
CSE-H20 in ezTCP product group is a product that provides TCP/IP communication
through Ethernet. In other words, like other ezTCP products, CSE-H20 sends data from the
serial port to the LAN after TCP/IP processing and vice versa.
As CSE-H20 has 2 RS232 ports, it can be connected to two RS232 devices in the same
time. And it is easy CSE0-H20 to attach to user systems because of its compact size.
It provides DHCP and PPPoE functions, so that it can be applied to the cable network
and the xDSL network. And it has DDNS (Dynamic DNS) function, so it can be used more
easily in the internet.
It also provides debugging function, so user can solve the problem with ours.

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2 Specifications
2.1 Components
CSE-H20 Body
5V Power Adapter (optional)
RS232C cable for PC connection - RJ45-DB9F-1M (optional)
RS232C cable for user device connection - RJ45-DB9M-1M (optional)
Cross-over Ethernet cable (optional)
DIN rail adopter (optional)

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2.2 Specifications
Power
Input Voltage
5V (±10%)
Current
200mA typical
Dimension
87mm x 57mm x 24mm
Weight
About 70g
Interface
Serial
RJ45 x 2
Network
RJ45
Serial Port
2 x RS232 (300bps ~ 230400bps, RTS/CTS flow control)
Network
Ethernet 10Base-T or 100Base-TX (Auto-Sensing)
Auto MDI/MDIX
Protocols
TCP, UDP, IP, ICMP, ARP, DHCP, PPPoE
DNS lookup, Dynamic DNS(DDNS)
Telnet COM Port Control Option (RFC2217)
SSL, SSH
Diagnostic
Online Debugging Function
RoHS
RoHS Compliant
Approvals
CE, FCC, MIC
Communicat
ion Mode
T2S
TCP Server Mode
COD
TCP Client Mode
ATC
TCP Server/Client
(AT command emulation)
U2S
UDP
Utilities
ezManager
Configuration utility via LAN
ezVSP
Serial-TCP/IP virtual driver for Windows
Table 2-1 specifications

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2.3 Interface
2.3.1 Serial Ports (RJ45)
Figure 2-1 serial ports (RJ45)
RS-232
Number
Name
Description
Level
I/O
Wiring
1
RTS
Request To Send
RS232
Out
Optional
2
DTR
Data Terminal Ready
RS232
Out
Optional
3
TXD
Transmit Data
RS232
Out
Required
4
GND
Ground
Ground
-
Required
5
GND
Ground
Ground
-
Required
6
RXD
Receive Data
RS232
In
Required
7
DSR
Data Set Ready
RS232
In
Optional
8
CTS
Clear To Send
RS232
In
Optional
Table 2-2 RS-232
LEDs of Serial Port
Condition
Color
Operation
TCP
disconnected
Green
OFF
Yellow
TCP
connected
Green
As same as CTS (on: CTS active)
Blinks if CSE-H20 gets data from the serial port.
Yellow
As same as RTS (on: RTS active)
Blinks if CSE-H20 sends data to the serial port.
UDP Mode
Green
As same as CTS (on: CTS active)
Blinks if CSE-H20 gets data from the serial port.
Yellow
As same as RTS (on: RTS active)
Blinks if CSE-H20 sends data to the serial port.
Table 2-3 LEDs of serial port

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Data bits, Parity and Stop bit
Item
Configurable Value
Data bit
8, 7, 6, 5
Parity
None, Even, Odd, Mark, Space
Stop bit
1, 1.5, 2
Table 2-4 data bits, parity and stop bit
Flow Control
CSE-H20 supports RTS/CTS Hardware Flow Control.
Telnet COM Port Control Option (RFC2217)
CSE-H20 has Telnet COM Port Control Option function that is specified by RFC2217. If
the Telnet COM Port Control Option is enabled, CSE-H20 sends the CTS, DSR control signal
to the communication counterpart, and CSE-H20 sets its serial port items (RTS, DTR, Baud
rate, data bits, parity, stop bit) after getting information from the communication
counterpart.
Disable TCP Transmission Delay
If you use this option, CSE-H20 sends the data from the serial port to Ethernet as
quickly as possible.
TX Delay
CSE-H20 has a function that delays its serial data for the user’s slow device. User can set
the interval between byte and byte which are outputting from CSE-H20’s serial ports. Its
unit is byte.
TCP Server / Client mode
This mode is available on TCP client mode only. In this mode, you don’t need to
change the mode for switching active or passive TCP connection. Note that the [Event
Byte] option should be set to 1 or lager value.

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2.3.2 Ethernet Interface
Network part of CSE-H20 is configured with Ethernet. So, what you have to do is only to
connect UTP cable. The Ethernet part detects 10Mbit or 100Mbit Ethernet automatically, to
connect the corresponding cable. It also provides auto MDI/MDIX function to detect 1:1
cable or cross-over cable automatically.
Each piece of Ethernet equipment has unique hardware addresses, and CSE-H20 also has
factory-set hardware address (which is called MAC address).
Figure 2-2 Ethernet interface
2.3.3 Power
DC 5V is used for CSE-H20 and the specification is below:
Figure 2-3 power

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2.3.4 System LEDs
CSE-H20 has 5 system LEDs.
System LEDs
Mode
Name
Color
LED Status
Description
Common
PWR
Red
ON
Power is supplied.
LINK
Green
ON
Connected to 100M Ethernet.
Red
ON
Connected to 10M Ethernet.
RXD
Yellow
Blinking
There are data on the LAN
TXD
Green
Blinking
Packets are being transmitted
to Ethernet
Normal
mode
STS
Yellow
Blinks in
every second
IP is allocated but TCP
connection is not established.
Blinks 4
Times/sec
Dynamic IP is not allocated.
ISP
mode
STS
Yellow
OFF
CSE-H20 is in the ISP mode
Serial
Configuration
mode
RXD/
TXD/
STS
-
Blink 2 Times/sec
at one time
CSE-H20 is in the Serial
Configuration mode
Figure 2-4 system LEDs
2.3.5 ISP Switch
There is an ISP switch on the side. If this switch is push 20ms~1s, it operates as Serial
Configuration Mode. If this switch is push over 1 second, CSE-H20 operates as ISP mode.
User can do firmware download to the CSE-H20 in the ISP mode. Please refer to 4.2 for
more information on firmware download.

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3 Installation and Test Run
3.1 Installation Method
You can install CSE-H20 in the following steps.
Title
Item
Sub-item
1.
Checking the
communication
environment
Check items
IP address environment
Serial port settings
Application program to be used
2.
Connecting to the
network
Check method
Check if LINK LED is ON.
3.
Configuring the
environmental variables
Configuration
method
Set by ezManager, a utility program for
configuration through the network.
Set by AT commands in ATC mode
Configuration
items
IP address related items
Serial port related items
Communication mode (depending on
application program)
4. Application to the field
Figure 3-1 installation method
3.1.1 Checking the Communication Environment
Before installing CSE-H20, check the network environment where CSE-H20 is to be
installed, including the followings matters:
IP address environment (local IP, subnet mask, gateway, DHCP/PPPoE etc.)
Serial port type of the equipment to which CSE-H20 is going to be connected
(RS232)
Serial port items of the equipment to which CSE-H20 is going to be connected
(baud rate, data bit, parity, stop bit, flow control)
Application program protocol to be used (TCP/UDP, server/client, etc.)
Security function (SSL, SSH, etc.)

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3.1.2 Connecting to the Network
Connect power to CSE-H20, and connect CSE-H20 either directly to the Ethernet port of
the PC where test is to be performed or to the network (hub) to which the PC is connected.
3.1.3 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 “ezManager” the environmental variable configuration program.
3.2 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
3.2.1 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
-
Figure 3-2 changing PC IP address
3.2.2 Installing CSE-H20
Connect the supplied RS232 cable (RJ45-DB9F-1M) between your PC and CSE-H20, the
LAN cable to the hub to which the PC is connected or directly to the PC, and the supplied
CSE-H20 power adapter to CSE-H20 for power supply. If the LAN cable has been correctly
connected when power is supplied, LINK LED turns on.

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3.2.3 Configuring CSE-H20
Configure CSE-H20 setting using ezManager, the ezTCP configuration program, as follows.
Run ezManager, and click [Search All] button in the ezManager window. And, ezManager
program will search all CSE-H20s on the local network.
When ezTCP is searched, MAC address of the ezTCP is displayed on the [Search Result]
window (The MAC address is indicated at the bottom of the product case).
Select the corresponding MAC address, and set the variables considering your network
environment.
When no ezTCP is found, check the Windows firewall. If you press [Windows Firewall]
button in the ezManager, you can see the Windows Firewall menu directly.
For simple test, we recommend that the variables keep default values as shown in the
below table.
Parameter
Value
Network
Local IP Address
10.1.0.1
Subnet Mask
255.0.0.0
Option
Telnet
Enabled
IP Address Search
Enabled
Serial Port
(COM1/2)
Serial Type
RS232
Baud Rate
19200bps
Parity
NONE
Data Bits
8
Stop Bit
1
Flow
NONE
Communication Mode
T2S –TCP Server
Local Port
1470/1471
Figure 3-3 configuring CSE-H20
3.2.4 Communication Test
Power the CSE-H20 off and on, then it tries to connect to the LAN.

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A program for testing starts if you press the [Simple Test] button of the ezManager.
Figure 3-4 communication test 1
Press the [Connect] button after inputting 10.1.0.1 and 1470 in the IP and Port. If the
TCP connection is established there will be “Connected [ 10.1.0.1 : 1470 ]. And the
STS indicator will be on.
Figure 3-5 communication test 2

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Press the [Open] button after selecting serial port that is connected to the CSE-H20.
If the serial port is open, the “COM1 the COM port has opened”message will be
shown.
Figure 3-6 communication test 3
If you press the [Send Data] button on the LAN part (Top), the data shown in the
[Send] box will be transmitted to the [Receive] box on the RS232 part (Bottom).
Figure 3-7 communication test 4

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If you press the [Send Data] button on the RS232 part (Bottom), the data shown in
the [Send] box will be transmitted to the [Receive] box on the LAN part.
Figure 3-8 communication test 5
If the transmitting and receiving data are same, the communication test is successful.

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4 Configuring IP Address Variables
4.1 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 (serial port type, communication speed, data bit length,
parity bit, flow control and etc.) to CSE-H20.
You can set the IP address and the serial port related items by using ezManager, the
supplied configuration utility which allows you to configure your CSE-H20 over the network,
or by using AT commands in ATC mode.
4.2 Configuring with ezManager
4.2.1 ezManager
The basic environmental variables (IP address related items, serial port items, and etc.)
can be set by ezManager which is an integrated management tool for Windows.
ezManager runs on Microsoft Windows and may not work on some older operating
systems. Following is the screen shot of ezManager which is just launched.
Figure 4-1 ezManager
 ezManager communicates UDP broadcast and its UDP ports are 50005 and 50006.
Port number 50005 is for setting and port number 50006 is for debugging. If you
use any firewall function, the ports have to be opened.

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4.2.2 Buttons of ezManager
Button
Description
Read
Read the values configured through MAC or IP address.
Write
Store the changed values of parameters
Set Password
Set or remove the password by this button.
Status
Check the status of ezTCP in real time.
Factory Reset
Initialize all the values as a default.
Debugging Message
Make the ezTCP broadcast debugging messages.
Change F/W / HTML
Change the firmware or HTML files with this button.
Export Variables
Store a set of values as a file.
Import Variables
Load values from a file made from [Export Variables]
Multi Write
Configure a set of values to one or more ezTCP
PING/ARP
Test the PING reply and manage the ARP table.
Simple Test
Run the test program interfaced with Network and RS232 port.
Windows Firewall
Run the windows firewall set window.
Exit
Exit ezManager
Figure 4-2 buttons of ezManager
4.2.3 Parameters of ezManager
Tap
Section
Parameters
Network
Network
Local IP Address, Subnet Mask,
Gateway IP, DNS IP Address
Notify IP Change
Protocol, Interval, Port, Data Type, DDNS ID, DDNS
Password, Host Name(dyndns/custom)
Option
Obtain an IP From The First Received Packet,
Obtain an IP Automatically (DHCP),
Obtain an IP Automatically (PPPoE),
PPPoE ID, PPPoE Password,
Obtain DNS Server Address Automatically
Option
Option
Telnet, IP Address Search, Send MAC Address,
Debugging Message, SSL, SSH,
Multiple Connection
ezTCP Firewall
Allowed MAC Address, Allowed IP Range,
IP Address, Network Mask,
Apply To ezManager
Serial Port
Serial Port
Serial Type, TTL, Baud Rate, Parity, Data Bits, Stop
Bit, Flow Control, DTR/DSR, TX Interval