---
title: "How to get ACK from W5500 when disconnected"
url: "https://maker.wiznet.io/forum/14441"
markdown_url: "https://maker.wiznet.io/forum/14441/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "cellkey"
created: "2022-01-12T08:19:39+09:00"
last_activity: "2022-01-12T08:39:32+09:00"
language: "en"
views: 324
replies: 0
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# How to get ACK from W5500 when disconnected

## Question

Asked by cellkey on 2022-01-12 in Ethernet Chips.

I would like to maintainTCP connection between W5500 and a server.
I am sending my own KEEP_ALIVE string to server every 1 minute.
I would like to get some message from W5500 when disconnect occured, due to any reason…
Please advise a method based on SPI bus or interrupt.
Thanks
Dan

---

Source: https://maker.wiznet.io/forum/14441