---
title: "W5500 multiple error"
url: "https://maker.wiznet.io/forum/15642"
markdown_url: "https://maker.wiznet.io/forum/15642/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "bahmanroshan"
created: "2025-03-12T22:41:10+09:00"
last_activity: "2025-03-12T22:41:10+09:00"
language: "en"
views: 4
replies: 0
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# W5500 multiple error

## Question

Asked by bahmanroshan on 2025-03-12 in Ethernet Chips.

We Have one stm32 connected to two w5500
Through separately spi
Inspire of your recommendation for W5500_Handle
Spi1 , 2 , still it is not successful .
In Ealing when a socket connected on spi1 , for example socket number 1 , this socket number (1) it not possible to use on spi2 . If I disconnect socket 1 in spi1 no the socket 1 is usually by spi2 and connect successful .
It means when a socket occupid in the one of spi s this socket was not applicable for the another spi . What is the problem ?
Does a socket
My ip addresses
W5500 NUMBER 1 :
SERVER [192.168.1.100](http://192.168.1.100)
Socket .1 [192.168.1.21](http://192.168.1.21)
Socket .2 [192.168.1.38](http://192.168.1.38)
Socket .3 [192.168.1.40](http://192.168.1.40)
Socket .4 [192.168.1.41](http://192.168.1.41)
Socket .5 [192.168.1.42](http://192.168.1.42)
Socket .6 [192.168.1.44](http://192.168.1.44)
Socket .7 [192.168.1.48](http://192.168.1.48)
Socket .8 [192.168.1.49](http://192.168.1.49)
W5500 NUMBER 2:
Server [192.168.2.100](http://192.168.2.100)
Socket.1 Client [192.168.2.1](http://192.168.2.1)
All of mac addresses is different
What is the problem?

When the socket .1 of W5500 number2 change from w5500 to a pc whit similar ip all of thing work correctly

What is the problem ?

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Source: https://maker.wiznet.io/forum/15642