---
title: "Wiz107SR garbage data (RS232) {SOLVED}"
url: "https://maker.wiznet.io/forum/9909"
markdown_url: "https://maker.wiznet.io/forum/9909/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "rikotech"
created: "2014-02-09T05:22:04+09:00"
last_activity: "2017-05-04T08:31:25+09:00"
language: "en"
views: 859
replies: 4
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Wiz107SR garbage data (RS232) {SOLVED}

## Question

Asked by rikotech on 2014-02-09 in Serial-to-Ethernet & ConfigTool.

Hello Guys! On the picture bellow you can see the settings I have made on WIZ107SR in conf tool. The problem is that I am still getting Garbage data. I checked baud rates at least 5 times, but I didnt see anything wrong. Please help!

Product WIZ107SR
Configuration tool: 1.4.4.1
Firmware: 3_14.
PC interface: Device terminal 1.0

[url][https://drive.google.com/file/d/0B_EYtdS7J5eKTk9SdW9uUGw1ajA/edit?usp=sharing\[/url\]](https://drive.google.com/file/d/0B_EYtdS7J5eKTk9SdW9uUGw1ajA/edit?usp=sharing%5B/url%5D)

Thank you in advance!

## Replies

### Reply 1 by rikotech, 2014-02-10

Thank you for reply!
The purpose I use it is exactly to debug my serial connection, hence I was able to see it doesnt work. Nonetheless I unchecked the debug message, afterward I sent/received a single character data trough Device Terminal Program 1.0 and I still get corrupted data.

### Reply 2 by rikotech, 2014-02-12

Thank you midnightcow!
I tried what you suggested. The result was [quote]LGSEG:CONNECTED[/quote]. Ok, so the device seems to work well in “stand alone mode”.
Then where am I wrong? I am pretty much sure it is on BAUD rate. Anyway, this is my test scheme:

```
WIZ107SR<--->max3232<--->RS232_USB_converter<--->PC
```

I am waiting for my oscilloscope to return from the service so I can determine tha actual BAUD rate.
A question is if the WIZ107SR serial port is TTL or RS232?
If the data being transmited is inverted or not?
Dont get me wrong, I have read the datasheet, but I have no idea what might be wrong in this case.

### Reply 3 by irina, 2014-02-13

WIZ107SR was released ‘TTL’ and ‘RS-232’ version both.
if you can find U2 ‘RS-232 transceiver’ (refer to WIZ107SR partlist) on your module, you have WIZ107SR RS-232 version and if not, it’s TTL version.
(Please check your board revision first. before revision 1.1 was released RS-232 version only.)

WIZ107SR RS-232 version is no need to use ‘TTL - RS-232 transceiver’ (like MAX3232).
if you want to use DB-9 port, please connect the port directly on the module.

### Reply 4 by rikotech, 2014-02-14

Thank you so much Guys!

> if you can find U2 ‘RS-232 transceiver’ (refer to WIZ107SR partlist) on your module, you have WIZ107SR RS-232 version

Yes it has!
The problem was I put MAX3232 after the module which has already such.
Now everything work perfect.
Thank you again! ![:smiley:](https://emoji.discourse-cdn.com/twitter/smiley.png?v=12)

---

Source: https://maker.wiznet.io/forum/9909