---
title: "Change W7100 Chip For W107SR module"
url: "https://maker.wiznet.io/forum/12298"
markdown_url: "https://maker.wiznet.io/forum/12298/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "Mustafa"
created: "2017-05-22T12:41:22+09:00"
last_activity: "2017-05-25T00:37:45+09:00"
language: "en"
views: 2460
replies: 14
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Change W7100 Chip For W107SR module

## Question

Asked by Mustafa on 2017-05-22 in Serial-to-Ethernet & ConfigTool.

hi
i’m using W107SR Module to send data from serial to Ethernet
suddenly the Rx pin was shorted to Ground , i think it was a mistake from me caused this pin to be shorted from inside the Chip
i have changed the on Board W7100 Chip(NAJTS-00001521) with another one (N9KH3-00001440)
the slide button of booting the software in 1 to but the on chip software
my question is
is the new W7100 chip is configured to work properly with the default ip of W107SR which is 192.168.11.2 ?
or i need to reconfigure it by some way ?
if i need this why at the datatsheet of W7100 is written that it is Hardwired TCP/IP Protocols ?

## Replies

### Reply 1 by Edward, 2017-05-23

Hi.

Yes. WIZ107SR default setting ip is 192.168.11.2.

If you correctly connection, displayed in the configuration tool.

W7100 is MCU(8051) + Hardwired TCP/IP Stack(Protocols).

refer to below link.

[wiznet.io](https://www.wiznet.io/wp-content/uploads/wiznethome/Chip/W7100A/Document/W7100A_DS_V124E.pdf)

<https://www.wiznet.io/wp-content/uploads/wiznethome/Chip/W7100A/Document/W7100A_DS_V124E.pdf>

### [W7100A_DS_V124E.pdf](https://www.wiznet.io/wp-content/uploads/wiznethome/Chip/W7100A/Document/W7100A_DS_V124E.pdf)

2.36 MB

### Reply 2 by irina, 2017-05-23

Hi Mustafa,

![](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/48.png) Mustafa:

> i’m using W107SR Module

What hardware revision WIZ107SR are you using?
The W7100 chip is applied to the old WIZ107SR Rev 1.1, and the W7100A chip is applied to Rev 1.4 which is currently in distribution. Please check this point.

![](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/48.png) Mustafa:

> why at the datatsheet of W7100 is written that it is Hardwired TCP/IP Protocols ?

The W7100A chip is a SoC with built-in TCP / IP stack logic. we called that TCP/IP stack logic is ‘Hardwired TCP/IP protocol stack’.

![](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/48.png) Mustafa:

> is the new W7100 chip is configured to work properly with the default ip of W107SR which is 192.168.11.2 ?
> or i need to reconfigure it by some way ?

The chip is simply a MCU based on the 8051 core with Hardwired TCP/IP stack, and if you want to use it equally on the WIZ107SR, you should use the W7100A-S2E chip solution. The W7100A-S2E is a W7100A chip that is pre-programmed with the WIZ107SR module firmware.

The reasons why you should use the W7100A-S2E product are described in the following post.

[W7100A-S2E not found on TCP-IP](https://forum.wiznet.io/t/W7100A-S2E-not-found-on-TCP-IP/2977/6) [W7100A](https://maker.wiznet.io/c/internet-mcu/w7100a/20)

> Dear fsisma, Our W7100A-S2E firmware of the product consists of two parts(Application boot part and app part), only the app part is released (60kB size). Released firmware at website is used for firmware update using configuration tool only. If the mentioned issue is not resolved by a firmware update, it may be a problem by moisture depending on storage. Please try to chip baking before mounting and tell us your hardware production results. Regards, Eric

### Reply 3 by Mustafa, 2017-05-23

Hi Eric & Edward
Thank you for your reply
my hardware version is 1.4 which has W7100A NAjTC-00001521 and i have replaced it with W7100A N9KH3-00001440
what did you mean by W7100A S2E ? is it another type that i should purchase ?
or my chip will work ?
note that i have installed my own network to detect the module on the configuration tool but it does not able to detect it
and i can’t even access it through serial mode

### Reply 4 by irina, 2017-05-23

![](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/48.png) Mustafa:

> what did you mean by W7100A S2E ? is it another type that i should purchase ?
> or my chip will work ?
> note that i have installed my own network to detect the module on the configuration tool but it does not able to detect it
> and i can’t even access it through serial mode

When you after purchase the W7100A chip, the internal flash memory is empty. (Naturally, the ‘serial to Ethernet’ firmware and MAC address are also not included.) Therefore, if you want the same operation as the existing WIZ107SR module after replacing the chip, you need to purchase the W7100A-S2E chip which contains the firmware of the WIZ107SR product.

Please contact to our distributor for W7100A-S2E pre-programmed chip.
Refer to the following link for more information of that product.
<http://www.wiznet.io/product-item/w7100-s2e/>

## Notice

**WIZnet does not warrant any problems that may arise when a customer is replacing components when using our module products. RMA request may be rejected if there is evidence of soldering on the product appearance or if electrical damage from user’s carelessness is identified.**

### Reply 5 by Mustafa, 2017-05-23 (in reply to reply 4)

I can’t purchase for now because budget issues
is there any way to program it by the .BIN Firmware file of the W107SR ? by any tool or by the Serial port ?

### Reply 6 by irina, 2017-05-23

![](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/48.png) Mustafa:

> I can’t purchase for now because budget issues
> is there any way to program it by the .BIN Firmware file of the W107SR ? by any tool or by the Serial port ?

Please refer to the following in link:
Firmware writing steps, MAC address input method and W7100A-S2E production binary file included.

![](https://avatars.discourse-cdn.com/v4/letter/p/ce7236/48.png) [Problem making W7100A-100 equal to W7100A-S2E-100?](https://forum.wiznet.io/t/problem-making-w7100a-100-equal-to-w7100a-s2e-100/2887) [W7100A](https://maker.wiznet.io/c/internet-mcu/w7100a/20)

> Dear support, we have bought 100 chips W7100A and I followed the steps found at this forum, mainly from here (viewtopic.php?f=17&t=2758 ), but the chip does not respond at all when using ConfigTool. We would like a support for a step by step firmware loading to make W7100A-100 equal as W7100A-S2E-100 with firmware found at WIZ107SR. Maybe we are jumping few steps. The procedure executed: 1- Set pin BOOTEN from W7100A to HIGH level. All VDD supply pins in operation, both crystal working prope…

### Reply 7 by Mustafa, 2017-05-23

Thank you for your Reply
another one question : Do i need to upload the data File ? or the code data is enough for the W7100A to be detected in the configuration tool and i will then change IP, Mask …etc ?

### Reply 8 by irina, 2017-05-23 (in reply to reply 7)

![](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/48.png) Mustafa:

> Do i need to upload the data File ? or the code data is enough for the W7100A to be detected in the configuration tool and i will then change IP, Mask …etc ?

Code data is enough.

You can enter the MAC address by programming the production firmware binary on the chip using the WizISP program according to the steps in the posting I mentioned. After the MAC address is entered, the device settings are automatically set to factory default.

### Reply 9 by Mustafa, 2017-05-23

can you kindly provide me with the .bin file i have to upload
i used the one at the post you mentioned above but it gives me this message

[![](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/5/5b1dfdb293bb8fa4d83de44f0dc24e1e51a0e588.JPG) 1168×656 155 KB](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/5/5b1dfdb293bb8fa4d83de44f0dc24e1e51a0e588.JPG)

### Reply 10 by irina, 2017-05-23 (in reply to reply 9)

![](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/48.png) Mustafa:

> can you kindly provide me with the .bin file i have to upload
> i used the one at the post you mentioned above but it gives me this message

Oh, I should have mentioned the use of the WizISP program in advance, but I’m sorry to be late.
The file you used is correct and latest version firmware binary for WIZ107SR / W7100A-S2E.

For the W7100A chip with WizISP program, the result of ‘Verify’ may be inconsistent due to the specificity of the memory structure and is normal. so, please check only Step 1 ~ 3 of ‘Auto Task Selection’ menu and proceed with flash writing.

I am sorry to make you confused.

### Reply 11 by Mustafa, 2017-05-24

Thank you for your great help
i have used it and then ran the application but configuration tool still doesn’t able to detect it
i have even changed the MAC address by the tool and nothing happened
can you provide any advises ?

### Reply 12 by irina, 2017-05-24 (in reply to reply 11)

![](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/48.png) Mustafa:

> i have used it and then ran the application but configuration tool still doesn’t able to detect it
> i have even changed the MAC address by the tool and nothing happened

After you have set the firmware on the board, check to see if the ‘Input MAC address’ is printed via serial(UART).

At this time, you can enter the MAC address using WizMACTool mentioned in the previous post or you can type it directly in the following command format.

```
MC00:08:DC:xx:xx:xx[CR][LF]
```

If the MAC address is input correctly, the network setting information output from the serial can be checked.

If the device is not detected on the network by configuration tool (search), please check the device serial output again.

### Reply 13 by Mustafa, 2017-05-24

Thank You Very much for your great help
this is the best technical support i have ever dealt with
it works

### Reply 14 by irina, 2017-05-25

![](https://avatars.discourse-cdn.com/v4/letter/m/f19dbf/48.png) Mustafa:

> Thank You Very much for your great help
> this is the best technical support i have ever dealt with
> it works

Thank you.
I wish you a successful product development. ![:slight_smile:](https://emoji.discourse-cdn.com/twitter/slight_smile.png?v=12)

Regards,
Eric

---

Source: https://maker.wiznet.io/forum/12298
