---
title: "wiz550io 버전값"
url: "https://maker.wiznet.io/forum/13154"
markdown_url: "https://maker.wiznet.io/forum/13154/md"
type: "Forum topic"
category: "IO Modules"
author: "Member 1111"
created: "2018-12-21T07:23:26+09:00"
last_activity: "2018-12-21T07:23:26+09:00"
language: "ko"
views: 569
replies: 0
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# wiz550io 버전값

## Question

Asked by Member 1111 on 2018-12-21 in IO Modules.

안녕하세요
wiz550io 버전값을 읽어보면 0x3900이 나오는데 뭐가 문제입니까?
8비트씩 0x00003900 3번에 나누어 보내게 io라이브러리에 되어있는데 rxbuf에 들어오는값은 0x39를 보내는 시점에 0x3900이 들어옵니다… 0x00을 보내면 0이고요… 당연히 루프백 모드는아닙니다…

부탁드려요…

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Source: https://maker.wiznet.io/forum/13154