---
title: "UDP client how to send data"
url: "https://maker.wiznet.io/forum/10910"
markdown_url: "https://maker.wiznet.io/forum/10910/md"
type: "Forum topic"
category: "Wireless"
author: "ner"
created: "2015-03-17T17:43:51+09:00"
last_activity: "2017-05-04T08:35:02+09:00"
language: "en"
views: 532
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# UDP client how to send data

## Question

Asked by ner on 2015-03-17 in Wireless.

I have created a socket as UDP client succesfully. But now, I don’t know what command I have to use to send data to the UDP server. Can anyone help me?

Thank you

## Replies

### Reply 1 by wizdaniel, 2015-03-18

Hi,

there is a list of WizFi210 AT Commands

[wiznet.co.kr/sub_modules/en/prod … 32&cType=2](http://wiznet.co.kr/sub_modules/en/product/product_detail.asp?Refid=722&page=1&cate1=5&cate2=43&cate3=0&pid=1132&cType=2)

WizFi210Programmers’ Guide

```
- 4.3.2.Escape Sequences
- 5. Using multi sockets
```

QuickStartGuide

```
- 5. Data Communication Test
```

we offer 2 examples,

1. data mode

> AT
> [OK]
> AT+WWPA=12345678
> [OK]
> AT+NDHCP=1
> IP SubNet Gateway
> 192.168.3.68: 255.255.255.0: 192.168.3.1
> [OK]
> AT+WAUTO=0,WizFiDemoAP
> [OK]
> AT+NAUTO=0,0,192.168.3.62,5000 //client, udp mode, destination ip, destination port
> [OK]
> ATA
> IP SubNet Gateway
> 192.168.3.68: 255.255.255.0: 192.168.3.1
> [OK]
>
> //////send data you typed

2. command mode

> at
> [OK]
> at
> [OK]
> AT+WWPA=12345678
> [OK]
> AT+NDHCP=1
> [OK]
> AT+WA=WizFiDemoAP
> IP SubNet Gateway
> 192.168.3.68: 255.255.255.0: 192.168.3.1
> [OK]
> AT+NCUDP=192.168.3.62,5000,5000
> [OK]
>
> S0DATAE // ESC key, type upper case ‘S’, 0<<socket number, ESC key, upper case ‘E’

---

Source: https://maker.wiznet.io/forum/10910