---
title: "Problem with Ping w5100"
url: "https://maker.wiznet.io/forum/10408"
markdown_url: "https://maker.wiznet.io/forum/10408/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "Lusitanos67"
created: "2014-07-28T09:41:18+09:00"
last_activity: "2017-05-04T08:36:35+09:00"
language: "en"
views: 2466
replies: 5
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Problem with Ping w5100

## Question

Asked by Lusitanos67 on 2014-07-28 in Ethernet Chips.

Hi,

When i connect this shield, with 5.5v, lights pwr-link-spd-fdx are on, rx blink some times, and tx less often.

- On the code i spécified an ip address fix, subnet and gateway.
  ip:192.168.1.25
  subnet:255.255.255.0
  gateway (router):192.168.1.1

- my router (192.168.1.1) is operationnal and have i good configuration

=> the router detect the link on 100M, but nothing else (i don’t see the ip on list of computer who are connected)
=> if a ping the adress 192.168.1.25 (the shield w5100), it says “host unreachable”, but i see that the rx’s led blink at the same time.

I have connect the shield on pin 50,51,52,53 on my arduino mega 2560.

What’s the problem ?

Sorry for my bad english

## Replies

### Reply 1 by Lusitanos67, 2014-07-29

Hi,

Thank for your reply.

I would make a video after work

### Reply 2 by Lusitanos67, 2014-07-29

the Rx blink some times, but tx never

statistics from my router on port lan

Compteur octets émis 30.66 KB
Collisions 0
Compteur octets reçus 592.00 B
Erreurs FCS 0

```
tx_good_bytes = 372859
tx_collisions = 0
tx_unicast_pkts = 10
tx_multicast_pkts = 981
tx_broadcast_pkts = 1390
rx_good_bytes = 12950
rx_fcs_errors = 0
rx_unicast_pkts = 175
```

### Reply 3 by Lusitanos67, 2014-07-30

someone have i little code (arduino) for checking the register of the w5100 shield ?

### Reply 4 by kavireloot, 2015-08-11

hi
i have the same problem…
and how can i Test to read and write W5100 registers in shield?
best regards

### Reply 5 by Coccoliso, 2015-08-11

On wiznet site you can found generic C++ library here
[url][http://www.wiznet.co.kr/wp-content/uploads/wiznethome/Chip/W5100/Software/W5100_Driver_V180(0).zip\[/url\]](http://www.wiznet.co.kr/wp-content/uploads/wiznethome/Chip/W5100/Software/W5100_Driver_V180%280%29.zip%5B/url%5D) for read and write registers.
Download W5100 app note here [url][http://www.wiznet.co.kr/wp-content/uploads/wiznethome/Chip/W5100/Application%20Note/W5100_Application_Note.zip\[/url\]](http://www.wiznet.co.kr/wp-content/uploads/wiznethome/Chip/W5100/Application%20Note/W5100_Application_Note.zip%5B/url%5D) for see how use driver library ( see DHCP and DNS examples first )

For arduino libs and how to use W5100 shield can see here:
[url][https://www.arduino.cc/en/Main/ArduinoEthernetShield\[/url\]](https://www.arduino.cc/en/Main/ArduinoEthernetShield%5B/url%5D)
[url][https://www.arduino.cc/en/Guide/ArduinoEthernetShield\[/url\]](https://www.arduino.cc/en/Guide/ArduinoEthernetShield%5B/url%5D)
[url][https://www.arduino.cc/en/Reference/Ethernet\[/url\]](https://www.arduino.cc/en/Reference/Ethernet%5B/url%5D)

---

Source: https://maker.wiznet.io/forum/10408