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Profibus card, Micromaster 420

Posted: Tue Apr 02, 2013 3:30 pm
by pairs8719
I have a problem with communication Profibus between S7-300 with Micromaster 420.

Someday I wrote a diagnositic program for S7-300.
I tested my program just like that:
I pulled the plug from Micromaster, after this I inserted the plug to Profibus socket.

I remember, when I touched plug with socket I saw many sparks.

Now I can't establish a communication with MM4. On the profibus card I see a orange led without blinking.

It is posibility that the card is damage?

Best regards