Wednesday, December 06, 2006

Solving a ML70 Login Problem

Problem description
After several login processes with CoDeSys onto the special function module ML70B for MGCplus (older hardware revisions of ML70B), it can happen that further login processes are not possible anymore. The number of login processes can not be determined, because also the duration of Login phases are relevant.

On the circuit board of ML70B a Tantal-Electrolyt capacity was soldered in with wrong polarity. The value of the capacity is 1.5µF (25V)
>> Soldering out the capacity and
>> soldering in with reversed polarity or soldering in a new capacity

Where can i find this capacity ?
On the picture the capacity is shown with wrong polarity!

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