Dear Technical friends:

        Hello, my customer contact me about ET200X problem "900088", do we have some information? could you please send me some manual about ET200X? Thanks a lot.

hi timzhou,

Information about ET200X available by using the search-box in the upper right side of this page. 

There you can find this manual:

SIMATIC ET 200X Distributed I/O Device

and many more...

regards,