---
title: "W5100 communication error question"
url: "https://maker.wiznet.io/forum/15088"
markdown_url: "https://maker.wiznet.io/forum/15088/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "kevin1"
created: "2023-12-07T08:00:58+09:00"
last_activity: "2023-12-07T08:00:58+09:00"
language: "en"
views: 129
replies: 0
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# W5100 communication error question

## Question

Asked by kevin1 on 2023-12-07 in Ethernet Chips.

When using W5100, the following communication error occurs.

1. For what reasons could this happen?

2. Is there a way to prevent this from happening?
   [![tcpip_fault1](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/0/009e92d19b72772ebee674e5db6c8e13ea53c9da.jpeg) tcpip_fault11058×612 195 KB](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/0/009e92d19b72772ebee674e5db6c8e13ea53c9da.jpeg)

3. 목록 항목

---

Source: https://maker.wiznet.io/forum/15088