SOLLAE SYSTEMS ENGLISH BLOG

-  ezTCP Applications [02] -

Automobile Diagnosis Equipment

* SYSTEM INFORMATION

This system is a monitoring system for diagnosis equpment on wireless network.
Unfortunutely, EZL-80 series will be discontinued beacuse the CF wireless LAN card has been discontinued.
So, the best option is the CSW-H80 until now.
However, we are developing new module for wireless LAN as a module type.

* DIAGRAM

* LIST OF AVAILABLE PRODUCTS
  >> [RS232 to WLAN] CSW-H80 / EZL-300S
  >> [RS422/485 to WLAN] EZL-300S

Posted by Roy

Today, 1 port Wireless LAN products have been tested.
Those are EZL-80C and CSE-H80.
This test is also implemented under the below condition.
 - System diagram
  [PC] >>> (Ethernet) >>> [HUB] >>> (Ethernet) >>> [AP] >>> (WLAN) >>> [ezTCP] >>> (RS232) >>> |
                                                                                                                                       Loop back |
  [PC]<<< (Ethernet) <<< [HUB] <<< (Ethernet) <<< [AP] <<< (WLAN) <<< [ezTCP] <<< (RS232) <<<  |
 - Distance between ezTCP and Access Point (AP): less than 1 meter.

* Parameters
 - Baud Rate[bps]
 - File Size: The size of a file which is sent
 - Bytes: Byte counts of the file
 - Time[sec]: Amount of time which is taken
 - Throughput[bps]: Estimated throughput = (Bytes * 10) / Time
 - Performance[%] = (Throughput) / (Baud Rate) * 100

* Results
 - EZL-80C

 -CSW-H80

 - Opinion
CSW-H80 have shown great performance. On the other hand, EZL-80C has similar performance with EZL-50L series. A major factor of these tests is the performance of CPU. The WLAN condition couldn't be a major factor because the distance is pretty short and the channel has no obstacles.

Posted by Roy

Related Configuration of IP Share Router with ezTCP

 

<IP Share Router>

 

Model: WRT 54GC Ver2.0 (LynkSYS)

Functions

 - Access Point device

 - Support DDNS

 - Support Remote management

 - Support Port Range Forwarding

 

There are some functions you should know how to use it when using ezTCP with IP share router.

In this description, I used a router of LynkSYS. However, if you have other routers, you don’t have to worry about it. Most of them have similar interface.

When you input the local IP address of router (192.168.1.1) in the web browser, the configuration environment will be shown like below shot.

 

 

1. Port Forwarding

Look at the below diagram.

 

 

When ezTCP is connected with an IP share router under environments like above figure, the port forwarding function should be set on the router.

This technique means when the packet arrived at the router, it forwards the packet to configured host with the information of port number.

Two ports should be opened at least.

The one is for the TCP connection, and the other one is for remote configuration.

The TCP port can be chosen by users but the default value of our products is TCP 1470 and the UDP port should be UDP 50005 because our configuration tool of ezTCP uses the port for remote search.

Following are the process of the configuration.
 

 

A. Click the [Applications & Gaming] menu.

B. Select the item of [Port Range Forwarding]

 

 

A. The comments can be set to easily identify each port.

B. Input the port numbers or ranges of numbers

C. Select protocols to the ports considering their purposes

D. Specify the IP address of ezTCP. You can set the IP address to your ezTCP with ezManager or ezConfig which are offered for configuration.

E. Check [Enabled] options.

 

If you do this, the router forwards the packet which is using the TCP 1470 and UDP 50005 to the device whose IP address is 192.168.1.2, when the router receive packet from Internet.

 

2. DDNS

 

When your device are in environment of assigning dynamic IP address, if you use it as a TCP server, DDNS functions should be needed.

 

 

A. Click [Setup] menu.

 

B. Move to [DDNS] tab.

 

 

C. Select [DynDNS.org] to use the function.

You can use other DDNS server. I use the server because I am familiar with that service.

If you use the service of DynDNS, you should register your account on the web site before doing that. (www.dyndns.com)

And they offer 5 free hosts for free and if you pay, more services are provided.

Anyway, register a hostname on the website.

These processes are needed to use DDNS.

 

D. Input your account's username and password.

E. Input the host name you registered.

 

F. Press the [Connect] button to update the IP address

 

G. If the update is successful, the message will be shown.

 

3. Remote Management

 

You are setting the IP share router in local network using the IP address of 192.168.1.1.

However, this supports remote management via Internet.

 

 

A. Click [Administration] menu

 

B. Select [Management] tab

 

 

C. Set password of the router.

 

D. Choose the [Remote Management] to [Enabled]

 

E. Define the [Remote Management Port] item. This number shouldn’t be the same as the TCP port for configuration. (TCP 1470)

 

 

Now, you can manage the router via Internet. Just input the host name and the port number on your web browser.

 

4. Access Point (AP)

 

ezTCP/WLAN products can be connected with AP in infrastructure mode. In case of CSW-H80 supports IEEE 802.11B and G. In this step, we will look at the simple configuration for use ezTCP/WLAN models.

 

 

A. Click [Wireless] menu.

 

B. Select [Basic Wireless Settings]

 

C. Choose the wireless standard modes. (We recommend the [Mixed] mode)

Other ezTCP/LAN products except for CSW-H80, only support IEEE 802.11B.

 

D. Set the SSID of your network. The same SSID has to be set on the ezTCP/WLAN products.

 

 

E. Click the [Wireless security]

If you want to use security options, this tab lets you do that.

There are four security modes in this AP.

Following is supported security options for each model.

 

* CSW-H80: WEP, WPA-PSK (TKIP), WPA2-PSK (AES)

* Other ezTCP/LAN products: only WEP

 

In addition, there is another security process. It is called Authentication.

 

A. Click the [Wireless] menu.

 

B. Select the [Advanced Wireless Settings] tab

 

C. Choose one of them. The same type should be set to ezTCP, too.

 

 

Posted by Roy

Let’s look at the ISP mode

 

In System Programming (ISP) mode

 

Q: What is the ISP mode?

 

ISP mode is one of states for upgrading firmware of ezTCP series. This mode is also used about solving problem with password for most of ezTCP. When you’ve forgot the configured password on your ezTCP, ISP mode will help you. In ISP mode, password and an option accessing to its configuration tool (ezManager / ezConfig) do not working.

 

Q: Then, can I use this mode all the time?

 

The answer would be No!

The TCP connection or data communication is impossible in this mode. So, you should use this mode when you are faced with above two situations.

 

Q: How can I get enter the mode?

 

The ways could be different on their types.

 

EZL-50R/50A/50L/50M

Pull-down the ISP- pin and then, reset or resupply the power to the product.

In case of using evaluation board, connect the jumper to the ISP position and reset or resupply the power.

 

EZL-60/60L/60M

Place the JP1 (ISP jumper) to ISP location for making a short circuit of those two pins. And then, reset or resupply the power.

 

EZL-70/CSE-M73

Connect the ISP jumper (EZL-70: JP1, CSE-M73: JP6) for making a short circuit of those two pins. And then, reset or resupply the power.

 

EZL-200L

Press the ISP button by RJ45 connector over 3 seconds in normal mode. Or, resupply the power while pressing the button.

If EZL-200L is in ISP mode, the STS LED will be blinks very quickly.

 

EZL-200F

Resupply the power while pressing the ISP button located by RJ45 connector.

If EZL-200F is in ISP mode, the STS LED will keep on.

 

EZL-410

Pull-down the ISP- pin on JP1 and then, reset or resupply the power.

In case of using evaluation board, place the jumper on JP5 to ISP location and reset or resupply the power.

 

EZL-300S/400S

Both products don’t have ISP mode. The firmware download will be implemented in telnet connection.

 

CSE-M32

Pull-down the ISP- pin and then, reset or resupply the power.

In case of using evaluation board, locate the jumper on JP5 to ISP location and reset or resupply the power.

 

CSE-H20/H21/CIE-H10
Press the ISP button over 1 second. Or, resupply the power while pressing the button.

If the products are in ISP mode, their STS LED will keep off.

 

CSP-H50

Reset the power pressing the ISP button or input “pf” in command mode.

 

EZL-300L/90

Resupply the power without wireless LAN card. The products will be operated as ISP mode for the first 2 seconds. If there are no inputs for the time, the mode will change to console mode.

 

CSW-H80

Resupply the power pressing the function button. Or, press the button over 1 second.

 

Q: How can I upgrade the Firmware?

 

Each manual of products indicates details of the process.

 

Here is a something you should know.

 

Products called ezTCP/LAN, EZL-50/60 series, EZL-70, 200L, 200F, 220, 410, 400S, CSE-M32, M73, H20, H21 and H10, can download the F/W through the Ethernet port.

 

Products called ezTCP/WLAN, EZL-80 series, EZL-300L/S and CSW-H80, can download the F/W through the serial port.

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Posted by Roy