[?]: S7-200 SF/Diag LED

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joopiter
Posts: 40
Joined: Tue Jan 01, 2008 9:37 am
Location: Iran

[?]: S7-200 SF/Diag LED

Post by joopiter »

Hi friends
I have a problem with s7-200 cpu226,
when I download my program the cpu stop and the RED SF led goes ON,
how can I know the problem?
and is it neccesery to use a memory card in s7-200?
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