---
title: "Sn_SSR is always 0xFFFF"
url: "https://maker.wiznet.io/forum/10316"
markdown_url: "https://maker.wiznet.io/forum/10316/md"
type: "Forum topic"
category: "IO Modules"
author: "khangai11"
created: "2014-06-17T17:50:37+09:00"
last_activity: "2017-05-04T08:33:11+09:00"
language: "en"
views: 736
replies: 0
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Sn_SSR is always 0xFFFF

## Question

Asked by khangai11 on 2014-06-17 in IO Modules.

hi.
i have problems with wiz830mj. i’m using wiz830mj with renesas R5F56218BDFP MCU(16 bit data bus/direct).
i can set values to SHAR,GWR,SUBR and SIPR. Then wiz830mj responses ping from pc. After set those registers, i can read same values from wiz830mj. But the problem is when i read Sn_SSR it is always 0xffff.

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Source: https://maker.wiznet.io/forum/10316