wiz550web + evb 제어시 에러

[WIZ550web]

안녕하세요
WIZ550web 모듈 + evb 보드 로 웹페이지에서 제어를 하다보면

HIGH Density Flash memory

=======================================
WIZnet WIZ550web Revision 1.1
Embedded Web Server Module
Firmware Version 2.0.0

Device Name : WIZ550WEB

MAC: 00:08:DC:69:44:65

IP: 192.168.77.100

GW: 192.168.77.1

SN: 255.255.255.0

DNS: 8.8.8.8

  • Storage mount succeed

  • Type : sFlash

  • Available Memory Size : 973 kB / 973 kB ( 0 kB is used )

  • Storage mount succeed

  • Type : SDHC

  • Available Memory Size : 7753312 kB / 7753728 kB ( 416 kB is used )

########## SW1 and SW2 were pressed.
########## Data flash flag was cleared.
########## Please reset a target.
GLOBAL EEPROM DATA ERASE…
ERASE DONE
GLOBAL EEPROM DATA ERASE…
ERASE DONE

########## Factory Test is started.
########## A0 = 2021 || A1 = 2201 || A2 = 2021 || A3 = 2180
########## RS422 TX:TEST
########## SW2 Released OK.
########## SW2 Pressed OK.
########## SW2 Released OK.
########## SW3 Released OK.
########## SW3 Released OK.
########## SW3 Pressed OK.
########## SW3 Pressed OK.

이런식의 에러가 나면서 mac address 가 변경 되어 버리는 경우가 발생 합니다.

원인을 학인 할수 없어서 문의 합니다.